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65results about How to "Reduce output torque fluctuation" patented technology
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High speed stabilizing drive control method of satellite-borne large inertia load mechanism
ActiveCN103269200AIncrease profitReduced torque harmonic componentsElectronic commutation motor controlAC motor controlFrequency spectrumPhase difference
A high speed stabilizing drive control method of a satellite-borne large inertia load mechanism includes the following steps: (1) powering direct currents on a motor and calculating the phase difference of the motor and a rotary transformer after the load mechanism is stabilized; (2) collecting the current rotating speed of the motor at the current speed ring sampling instant and calculating torque electric currents; (3) collecting the electric currents iA and the electric currents iB of the motor at the current speed ring sampling instant to obtain the harmonic frequency spectrum, the amplitude and the phase of the iA and the iB; (4) conducting harmonic compensation on the iA and the iB; (5) converting the A-phase winding currents and the B-phase winding currents of the motor after compensation under a rotor coordinate system; (6) calculating the two-shaft voltage of the rotor coordinate system; (7) determining the three-phase time value of a PWM waveform generator, wherein a SVPWM waveform generator generates voltage waves according to the three-phase time value, and the voltage waves are loaded on a motor winding to control the motor; (8) entering the next current ring sampling instant, and switching to the step (3) to execute repeatedly; (9) entering the next current ring sampling instant, and switching to the step (2) to execute repeatedly.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
Stator and rotor structure of built-in permanent magnet brushless direct current motor
InactiveCN104104168AImprove efficiencyConvenient lengthMagnetic circuit rotating partsMagnetic circuit stationary partsElectric machineElectrical polarity
The invention discloses a stator and rotor structure of a built-in permanent magnet brushless direct current motor, and belongs to the technical field of motors. The stator and rotor structure of the built-in permanent magnet brushless direct current motor is characterized in that more than one V-shaped groove (2) is formed in the circumference of a rotor, opening ends of each two adjacent V-shaped grooves are communicated through a communication arch groove (4), two symmetrical gap grooves (5) are located in the direction towards the interior of the opening end of each V-shaped groove, permanent magnets (6) of the same polarity are placed in the left portion and the right portion of each V-shaped groove (2), the polarities of the permanent magnets in each two adjacent V-shaped grooves are opposite, an inclined bevel (7) is arranged at the bottom of each communication arch groove (4), and the external circle of a stator (8) is processed by using an enneagon irregularity edge cutting method, and is of three phase fraction slot centralization winding structure. The stator and rotor structure of the built-in permanent magnet brushless direct current motor not only can improve efficiency of the built-in V-shaped permanent magnet brushless direct current motor, but also can reduce output torque fluctuation, and has the advantages of reducing magnetic leakage flux during the same period, and being low in noise and high in efficiency.
Owner:SOUTHEAST UNIV
Single-phase transverse flux full-control switched reluctance motor
ActiveCN103633806AReduce output torque fluctuationGuaranteed continuous outputDynamo-electric machinesTransverse fluxElectric machine
The invention relates to the field of motors, in particular to a single-phase transverse flux full-control switched reluctance motor, and aims to solve the problem that the traditional single-phase switched reluctance motor is high in output torque fluctuation, low in output torque density and incapable of outputting continuous torque. The single-phase transverse flux full-control switched reluctance motor in a cylinder structure comprises a stator, a rotor and a motor output shaft. An air gap is formed between the stator and the rotor. The rotor is fixed outside the motor output shaft. The stator comprises a stator core, a front upward stator winding, a front downward stator winding, a rear downward stator winding, and a rear upward stator winding. The rotor comprises a permanent magnet, a front rotor core and a rear rotor core. The permanent magnet is a circular permanent magnet. The single-phase transverse flux full-control switched reluctance motor has the advantages that the output torque fluctuation is reduced by 20%, the output torque density is increased by 10% compared to that of the traditional motor, the motor can output continuous torque, measuring process of the switched reluctance motor is simpler, and manufacturing cost of the switched reluctance motor is reduced. The single-phase transverse flux full-control switched reluctance motor is applicable to the field of motors.
Owner:HARBIN INST OF TECH
Variable-inertia and variable-damping torsion damper
ActiveCN105782339AReduce output torque fluctuationImprove fuel economyRotating vibration suppressionDamping torqueEngineering
The invention discloses a variable-inertia and variable-damping torsion damper. The variable-inertia and variable-damping torsion damper comprises a variable-inertia assembly and a variable-damping assembly; the variable-inertia assembly comprises a left end disk, a right end cover, an inner iron core, a permanent magnet, an inner coil and variable-mass-distribution ferrofluid; and the inner coil and the permanent magnet are combined to generate a magnetic field to change the distribution and the magnitude of a magnetic field at the position of the ferrofluid, and the magnitude of rotating inertia of the variable-inertia assembly is continuously adjusted. The variable-inertia and variable-damping torsion damper can independently serve as a front end torsion damper of an internal combustion engine and can also serve as a secondary flywheel of a dual-mass flywheel to be connected with a clutch; the transmission system damping and the rotating inertia can be adjusted in a self-adaptive manner according to requirements of a control algorithm; and torsion vibration of a transmission system is effectively inhibited. The variable-inertia and variable-damping torsion damper has the beneficial effects that the structure is compact, output damping torque is large, the rotating inertia adjustment range is wide, and the dynamic response is fast; and the fuel oil economy of the internal combustion engine can be improved easily, and the variable-inertia and variable-damping torsion damper can also be applied in a zero-gravity environment of the aerospace and thus has wide application prospects in rotating type mechanical devices.
Owner:CHONGQING UNIV
Built-in permanent-magnet synchronous motor
InactiveCN106208461AReduce output torque fluctuationMagnetic circuit rotating partsSynchronous motorPermanent magnet synchronous motor
The invention discloses a built-in permanent-magnet synchronous motor. The built-in permanent-magnet synchronous motor comprises a rotor iron core and a rotor shaft, wherein a plurality of pairs of magnetic poles are arranged on the rotor iron core and are arranged around the rotor shaft, the plurality of pairs of magnetic poles are divided to two groups of magnetic poles in average, and for arbitrary one group of magnetic poles, each magnetic pole is arranged at the other side, facing a symmetric middle line in a deviation way by taking the symmetric middle line arranged between the magnetic poles at two sides of the group as an axis, and the distances between magnetic isolation bridges between the magnetic poles in the arbitrary one group of magnetic poles are equal. In the abovementioned built-in permanent-magnet synchronous motor, a mode of magnetic pole deviation is relatively simple, the rotor structure of the built-in permanent-magnet synchronous motor is relatively convenient to improve, and the built-in permanent-magnet synchronous motor is also easy to operate; and moreover, with the built-in permanent-magnet synchronous motor improved according to the abovementioned mode, the cogging torque amplitude can be reduced to a great extent, and the fluctuation of an output torque is greatly reduced.
Owner:GUANGDONG UNIV OF TECH
Novel method for supporting high-speed motor rotor
InactiveCN102904369ASimple structureEasy to controlMechanical vibrations separationSupports/enclosures/casingsUltrasonic levitationEngineering
The invention discloses a non-contact method for supporting a high-speed motor rotor by using ultrasonic vibration. A bearing bush 2 with a conical surface is sleeved at each of the left end and the right end of the motor rotor 3; the bearing bushes 2 are respectively connected with an ultrasonic transducer 1; the inner conical surfaces of the bearing bushes 2 are matched with the outer conical surfaces of the ultrasonic transducers 1; when the ultrasonic transducers 1 are in an ultrasonic vibration states, the outer conical surfaces have suspension capacity; under the mutual action of the outer conical surfaces of the ultrasonic transducers 1 and the inner conical surfaces of the bearing bushes 2, suspension force is transmitted to the motor rotor 3, and motor rotor 3 is suspended under the extrusion action of the suspension force on two sides, so that an aim of supporting the motor rotor 3 without any contact is fulfilled; and moreover, the motor rotor 3 and a stator 4 are in a clearance non-friction state, so that high-rotating-speed rotation can be realized. The method has the advantages that an ultrasonic suspension supporting system is simple in structure, easy to control and high in stability; electromagnetic coupling does not exist between an ultrasonic suspension process and a motor, so that any influence on a rotating magnetic field of the motor can be avoided; and besides the conventional air floating, liquid floating or magnetic suspension, the invention provides another novel non-contact method for supporting the high-speed motor rotor.
Owner:JILIN UNIV
Permanent magnet embedded rotor for direct current brushless motor
InactiveCN104883024AImprove saddle phenomenonImprove Hall signal jitter phenomenonMagnetic circuit rotating partsSynchronous machines with stationary armatures and rotating magnetsPermanent magnet rotorBrushless motors
Owner:RENUN MECHANICAL & ELECTRICAL
Air conditioner compressor rotating speed fluctuation suppression method
ActiveCN109698647AGuaranteed uptimeImprove fluctuation suppression effectTorque ripple controlElectric motor controlMomentumAngular velocity
The invention discloses an air conditioner compressor rotating speed fluctuation suppression method. The method includes processes of controlling a compressor according to real-time angular velocity and moment. The process of controlling the compressor according to the real-time angular velocity includes the following steps: filtering axis errors to obtain an angular velocity compensation amount;obtaining a compensated angular velocity output amount according to the angular velocity compensation amount; and correcting the real-time angular velocity according to the compensated angular velocity output amount and controlling the compressor; The process of controlling the compressor according to the moment includes the following steps: calculating a difference between a target angular velocity fluctuation amount and the compensated angular velocity output amount to obtain a first angular velocity difference; filtering the first angular velocity difference to obtain filtered angular velocity; inputting the filter angular velocity into a speed loop regulator to obtain output moment; obtaining a moment compensation amount according to the first angular velocity difference; and obtainingcompensated output moment according to the moment compensation amount and the output and controlling the compressor. The effectiveness of compressor rotating speed fluctuation suppression can be improved by applying the air conditioner compressor rotating speed fluctuation suppression method.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Forecabin module structure of electric four-wheel drive automobile chassis
InactiveCN105035169AEffective mounting supportPlenty of spaceUnderstructuresPower batteryVehicle frame
The invention discloses a forecabin module structure of an electric four-wheel drive automobile chassis, which comprises a first assistant frame providing installation supporting, a forecabin combined support which can be installed on the frame and provide the installation supporting, a first motor which provides driving force to automobile front wheels and is firmly connected on the first assistant frame by a plurality of suspension structures, as well as a direct current transformer, a charging machine, a whole vehicle controller and a first motor controller which are respectively installed on the forecabin combined support, wherein the forecabin combined support comprises a plurality of parallel horizontal tubes and a plurality of parallel longitudinal tubes, the multiple longitudinal tubes are arranged on the horizontal tubes in a staggered manner, a first metal plate is disposed on the horizontal tubes, and a second metal plate is disposed on the longitudinal tubes. By implementing the forecabin module structure of the electric four-wheel drive automobile chassis provided by the invention, the effective installation supporting and sufficient space can be provided, heat dissipation efficiency can be increased, electromagnetic interference can be avoided, and arrangement space and protection performance of power batteries can be increased.
Owner:GUANGZHOU CHENGXING ZHIDONG AUTOMOTIVE TECH CO LTD
Method for restraining rotating speed fluctuation of single-rotor compressor
ActiveCN109742994ASuppression of speed fluctuationsReduce speed fluctuationMotor parameters estimation/adaptationAC motor angular speed controlMomentumPhase-locked loop
The invention discloses a method for restraining rotating speed fluctuation of a single-rotor compressor. The method comprises the process of controlling the compressor according to the real-time angular speed and the step of controlling the compressor according to the force moment; the process of controlling the compressor according to the real-time angular speed comprises the steps that the axiserror is filtered, and the axis error compensation quantity is obtained; the axis error compensation quantity is input into a phase-locked loop adjuster, and the output angular speed of the phase-locked loop adjuster is obtained; the real-time angular speed is corrected through the output angular speed, and the compressor is controlled according to the corrected real-time angular speed; the process of controlling the compressor according to the force moment comprises the steps that the difference between the target angular speed fluctuation quantity and the output angular speed of the phase-locked loop adjuster is calculated, and a first angular speed difference value is obtained; the first angular speed difference value is filtered, and the filtered angular speed is obtained; the filtered angular speed is input into a speed loop adjuster, and the output force moment is obtained; and the compressor is controlled according to the output force moment. By applying the method, the effectiveness of restraining rotating speed fluctuation of the compressor can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for controlling rotating speed of compressor of air conditioner
ActiveCN109724312AGuaranteed uptimeImprove effectivenessSpace heating and ventilation safety systemsSpace heating and ventilation control systemsMomentumControl theory
The invention discloses a method for controlling the rotating speed of a compressor of an air conditioner. The method includes the processes of controlling the compressor according to the real-time angular speed and the torque; the process of controlling the compressor according to the real-time angular speed includes the following steps that filtering processing is performed on the axis error, and the angular speed compensation quantity is acquired; the compensated angular speed output quantity is acquired according to the angular speed compensation quantity; the real-time angular speed is corrected according to the compensated angular speed output quantity, and the compressor is controlled; the process of controlling the compressor according to the torque includes the following steps that the difference between the target angular speed fluctuation quantity and the fed-back angular speed quantity is calculated, and the first angular speed difference is acquired; filtering processing is performed on the first angular speed difference, and the filtered angular speed is acquired; the filtered angular speed is input into a speed loop regulator, and the output torque is acquired; the torque compensation quantity is acquired according to the first angular speed difference; the compensated output torque is acquired according to the torque compensation quantity and the output torque,and the compressor is controlled. By the aid of the method, the effectiveness of suppressing of the fluctuation of the rotating speed of the compressor can be improved.
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
Single-rotor compressor rotating speed control method
ActiveCN109458338AGuaranteed uptimeEasy to operateMachines/enginesPump controlMomentumPhase-locked loop
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for controlling rotating speed of compressor
ActiveCN109724306AGuaranteed uptimeReduce cyclical fluctuationsSpace heating and ventilation safety systemsSpace heating and ventilation control systemsMomentumPhase-locked loop
The invention discloses a method for controlling the rotating speed of a compressor. The method includes the processes of controlling the compressor according to the real-time angular speed and the torque; the process of controlling the compressor according to the real-time angular speed includes the following steps that filtering processing is performed on the axis error, and the angular speed compensation quantity is acquired; the angular speed compensation quantity is compensated to the output angular speed of a phase-locked loop regulator, and the compensated angular speed output quantityis acquired; the real-time angular speed is corrected according to the compensated angular speed output quantity, and the compressor is controlled according to the corrected real-time angular speed; the process of controlling the compressor according to the torque includes the following steps that the difference between the target angular speed fluctuation quantity and the compensated angular speed output quantity is calculated, and the first angular speed difference is acquired; filtering processing is performed on the first angular speed difference, and the filtered angular speed is acquired; the filtered angular speed is input into a speed loop regulator, and the output torque is acquired; and the compressor is controlled according to the output torque. By the aid of the method, the effectiveness of suppressing of the fluctuation of the rotating speed of the compressor can be improved.
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
A method for controlling the speed fluctuation of an air conditioner compressor
The invention discloses a method for controlling the rotation speed fluctuation of an air conditioner compressor, which includes the process of controlling the compressor according to the real-time angular velocity and torque; controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; according to the angular velocity compensation amount Obtaining the compensated angular velocity output; correcting the real-time angular velocity and controlling the compressor according to the compensated angular velocity output; controlling the compressor according to the torque includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference ; Perform filtering processing on the first angular velocity difference to obtain a filtered angular velocity; input the filtered angular velocity to a speed loop regulator to obtain an output torque; obtain a torque compensation amount according to the first angular velocity difference; according to the torque compensation amount and the output torque to obtain a compensated output torque and control the compressor. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
Method for Suppressing Speed Fluctuation of Single Rotor Compressor
ActiveCN109462354BSuppression of speed fluctuationsReduce speed fluctuationMotor parameters estimation/adaptationAC motor angular speed controlAngular velocityEngineering
The invention discloses a method for suppressing the rotation speed fluctuation of a single-rotor compressor, including the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain angular velocity compensation amount; compensate the angular velocity compensation amount to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; correct the real-time angular velocity according to the compensated angular velocity output, and control the compressor according to the corrected real-time angular velocity The process of controlling the compressor according to the torque includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference; filtering the first angular velocity difference to obtain the filtered angular velocity; Input to the speed loop regulator to obtain the output torque; control the compressor according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for controlling rotating speed of single-rotor compressor
ActiveCN109458337AGuaranteed uptimeImprove fluctuation suppression effectMachines/enginesMomentumPhase-locked loop
The invention discloses a method for controlling the rotating speed of a single-rotor compressor. The method includes the processes of controlling the compressor according to the real-time angular speed and the torque. The process of controlling the compressor according to the real-time angular speed includes the steps that the axis error is filtered, and an angular speed compensation dosage is obtained; the angular speed compensation dosage is compensated into the output angular speed of a phase-locked loop adjuster, and the compensated angular speed output quantity is obtained; and the real-time angular speed is corrected according to the compensated angular speed output quantity, and the compressor is controlled according to the corrected real-time angular speed. The process of controlling the compressor according to the torque includes the steps that the difference between the target angular speed fluctuation quantity and the compensated angular speed output quantity is calculated,and a first angular speed difference value is obtained; the first angular speed difference value is filtered, and the filtered angular speed is obtained; the filtered angular speed is input in a speed loop adjuster, and the output torque is obtained; and the compressor is controlled according to the output torque. By means of the method, the effectiveness of rotating speed fluctuation suppressionof the compressor can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for Controlling Speed Fluctuation of Single Rotor Compressor
ActiveCN109698645BGuaranteed uptimeImprove effectivenessTorque ripple controlElectric motor controlAngular velocityEngineering
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Range extender assembly and vehicle
InactiveCN112810461ALighten the loadReduce output torque fluctuationHybrid vehiclesPropulsion by batteries/cellsElectric machineryEngineering
The invention discloses a range extender assembly and a vehicle. The range extender assembly comprises an engine part and a motor part connected with the engine part. The engine part includes: an engine block; and a crankshaft arranged in the engine cylinder body. The motor part comprises a rotor assembly connected with one end of the crankshaft, wherein a flywheel is arranged at the end, close to the crankshaft, of the rotor assembly, and crankshaft position marks are arranged on the periphery of the flywheel; and a stator assembly arranged on the periphery of the rotor assembly and connected with the engine cylinder body, wherein a crankshaft position signal sensor used for reading crankshaft position marks is arranged on the stator assembly. A flywheel of the engine part is omitted, the flywheel is integrated at the end, close to the crankshaft, of the rotor assembly, the flywheel is arranged close to the engine, bending stress caused by the mass of the flywheel is reduced, the bearing load of a main shaft of the engine part is reduced, crankshaft position marks are arranged on the periphery of the flywheel, and the crankshaft position marks can be read conveniently; the motor part applies compensation torque according to the crankshaft position, and the output torque fluctuation of the engine part is reduced.
Owner:FAW JIEFANG AUTOMOTIVE CO
Methods of suppressing compressor speed fluctuations
ActiveCN109469613BSuppression of speed fluctuationsReduce speed fluctuationMachines/enginesPump controlRegulatorAngular velocity
The invention discloses a method for suppressing fluctuation of the rotation speed of a compressor. The method comprises the process of controlling the compressor according to the real-time angular speed and the process of controlling the compressor according to the moment. The process of controlling the compressor according to the real-time angular speed comprises the steps that filtering processing is carried out on axis errors, and the axis error compensation quantity is obtained; the axis error compensation quantity is input into a phase-locked loop adjuster, and the output angular speed of the phase-locked loop adjuster is obtained; and the real-time angular speed is corrected through the output angular speed, and the compressor is controlled according to the corrected real-time angular speed. The process of controlling the compressor according to the moment comprises the steps that the difference between the target angular speed fluctuation quantity and the output angular speed of the phase-locked loop adjuster is calculated, and a first angular speed difference value is obtained; the first angular speed difference value is subjected to filtering processing, and a filtering angular speed is obtained; the filtering angular speed is input into a speed loop adjuster, and the output moment is obtained; and the compressor is controlled according to the output moment. By meansof the method, effectiveness of suppressing fluctuation of the rotation speed of the compressor can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for Controlling Speed Fluctuation of Air Conditioning Compressor
ActiveCN109742996BGuaranteed uptimeImprove fluctuation suppression effectMotor parameters estimation/adaptationAC motor angular speed controlAngular velocityEngineering
The invention discloses a method for controlling the rotational speed fluctuation of an air-conditioning compressor, including the process of controlling the compressor according to the real-time angular velocity and torque; controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation; The angular velocity compensation amount obtains the compensated angular velocity output; corrects the real-time angular velocity and controls the compressor according to the compensated angular velocity output; and controls the compressor according to the torque including: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference; filter the first angular velocity difference to obtain a filtered angular velocity; input the filtered angular velocity to a speed loop regulator to obtain an output torque; obtain a torque compensation amount according to the first angular velocity difference; according to the The torque compensation amount and the output torque obtain the compensated output torque and control the compressor. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
Method for Compressor Speed Fluctuation Suppression
ActiveCN109724298BSuppression of speed fluctuationsReduce speed fluctuationSpace heating and ventilation safety systemsSpace heating and ventilation control systemsAngular velocityEngineering
The invention discloses a method for suppressing the rotation speed fluctuation of a compressor, which includes the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; Compensating the angular velocity compensation amount to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; correcting the real-time angular velocity according to the compensated angular velocity output, and controlling the compressor according to the corrected real-time angular velocity; The process of the torque control compressor includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference; filtering the first angular velocity difference to obtain the filtered angular velocity; inputting the filtered angular velocity to The speed loop regulator obtains the output torque; and controls the compressor according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
Method for Speed Fluctuation Control of Single Rotor Compressor
ActiveCN109586643BGuaranteed uptimeImprove fluctuation suppression effectElectric motor controlVector control systemsAngular velocityEngineering
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
How to control compressor speed
ActiveCN109724304BGuaranteed uptimeImprove fluctuation suppression effectSpace heating and ventilation safety systemsSpace heating and ventilation control systemsAngular velocityEngineering
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
Method for controlling single-rotor compressor rotating speed fluctuation
ActiveCN109698645ARun smoothlyReduce cyclical fluctuationsTorque ripple controlElectric motor controlSpeed loopAngular velocity
The invention discloses a method for controlling single-rotor compressor rotating speed fluctuation. The method includes processes of controlling a compressor according to real-time angular velocity and moment. The process of controlling the compressor according to the real-time angular velocity includes the following steps: filtering axis errors to obtain an angular velocity compensation amount;compensating the angular velocity compensation amount to output angular velocity of a phase-locked loop regulator to obtain a compensated angular velocity output amount; and correcting the real-time angular velocity according to the compensated angular velocity output amount, and controlling the compressor according to the corrected real-time angular velocity. The process of controlling the compressor according to the moment includes the following steps: calculating a difference between a target angular velocity fluctuation amount and a feedback angular velocity amount to obtain a first angular velocity difference; filtering the first angular velocity difference to obtain filtered angular velocity; inputting the filter angular velocity into a speed loop regulator to obtain output moment; and controlling the compressor according to the output moment. The effectiveness of compressor rotating speed fluctuation suppression can be improved by applying the method for controlling the single-rotor compressor rotating speed fluctuation.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
A method for controlling the speed of an air conditioner compressor
ActiveCN109724312BGuaranteed uptimeImprove effectivenessSpace heating and ventilation safety systemsSpace heating and ventilation control systemsAngular velocityEngineering
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
A method and device for adjusting torque of an automobile, and an automobile
ActiveCN112265543BReduce output torque fluctuationImprove driving experienceVehicle fittingsSpeed/accelaration controlDriver/operatorEngineering
Owner:BEIQI FOTON MOTOR CO LTD
Method for Compressor Speed Fluctuation Control
ActiveCN109724299BGuaranteed uptimeImprove effectivenessSpace heating and ventilation safety systemsSpace heating and ventilation control systemsAngular velocityMechanical engineering
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
A Method for Improving the Stability of Clutch Output Torque During Automobile Starting
The invention discloses a method improving the stability of the output torque of a clutch in the starting process of an automobile. According to the method, through a special grinding tool, a specific surface of a friction plate of a driven disc of the clutch is ground, the other surface keeps unchanged, and therefore unstable connection of a driving disc and the driven disc of the clutch due to deflection can be eliminated, fluctuation of the friction torque between the driving disc and the driven disc of the clutch in the starting process of the automobile can be effectively reduced, and the shaking phenomenon in the starting process of the automobile can be alleviated. According to the method, a new solution idea and method are proposed, and the output torque of the clutch can be stable. The method is easy to implement and low in cost, and the homogeneity of products can be guaranteed easily.
Owner:GUILIN FUDA
High speed stabilizing drive control method of satellite-borne large inertia load mechanism
ActiveCN103269200BIncrease profitReduced torque harmonic componentsElectronic commutation motor controlAC motor controlFrequency spectrumPhase difference
A high speed stabilizing drive control method of a satellite-borne large inertia load mechanism includes the following steps: (1) powering direct currents on a motor and calculating the phase difference of the motor and a rotary transformer after the load mechanism is stabilized; (2) collecting the current rotating speed of the motor at the current speed ring sampling instant and calculating torque electric currents; (3) collecting the electric currents iA and the electric currents iB of the motor at the current speed ring sampling instant to obtain the harmonic frequency spectrum, the amplitude and the phase of the iA and the iB; (4) conducting harmonic compensation on the iA and the iB; (5) converting the A-phase winding currents and the B-phase winding currents of the motor after compensation under a rotor coordinate system; (6) calculating the two-shaft voltage of the rotor coordinate system; (7) determining the three-phase time value of a PWM waveform generator, wherein a SVPWM waveform generator generates voltage waves according to the three-phase time value, and the voltage waves are loaded on a motor winding to control the motor; (8) entering the next current ring sampling instant, and switching to the step (3) to execute repeatedly; (9) entering the next current ring sampling instant, and switching to the step (2) to execute repeatedly.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
Method for compressor speed control
ActiveCN109724300BGuaranteed uptimeImprove effectivenessSpace heating and ventilation safety systemsSpace heating and ventilation control systemsAngular velocityMechanical engineering
The invention discloses a method for controlling the rotational speed of a compressor, including the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; The angular velocity compensation amount is compensated to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; the real-time angular velocity is corrected according to the compensated angular velocity output, and the compressor is controlled according to the corrected real-time angular velocity; according to the torque The process of controlling the compressor includes: calculating the difference between the target angular velocity fluctuation and the output angular velocity of the phase-locked loop regulator to obtain a first angular velocity difference; filtering the first angular velocity difference to obtain a filtered angular velocity; The filtered angular velocity is input to a speed loop regulator to obtain an output torque; the compressor is controlled according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.
Owner:CHONGQING HAIER AIR CONDITIONER CO LTD +2
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