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68 results about "Power transfer function" patented technology
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Resonant power converter with primary-side tuning and zero-current switching
InactiveUS6490177B1Efficient power electronics conversionConversion with intermediate conversion to dcCapacitanceDc current
A DC power converter consisting of a series-resonant branch used to transform a DC voltage source into a DC current source exhibiting, a uni-polar, zero-current-switching characteristic. Frequency of the series-resonant branch, acting in concert with reflected load parameters, provides a forced oscillation frequency, Fo, component to an AC voltage source generated across the input winding of a power transformer by the resonant capacitor. Complex load parameters allow AC input current, displaced by 90° from the AC voltage source, to flow in the transformer primary winding throughout a composite, carrier-frequency cycle. Another component of the carrier-frequency consists of a resonant, natural oscillation frequency, Fn, resulting from resonance by the AC voltage source capacitance with the open-circuit inductance of the primary winding on the input power transformer. The composite carrier-frequency, Fo+Fn, transported through the input power transformer is directed to a rectifier / filter assembly and applied as a DC voltage to an output load. Thus, the uni-polar DC series-resonant branch is converted into an AC power transfer function, fully isolated from the input power switch, by the AC voltage source capacitor. The power transfer function characterizing a bi-polar power inverter requires a single power switch referenced to the input power return bus.
Owner:FIGUEROA SALVADOR
Optical iq modulator control
ActiveUS20160282699A1Electromagnetic transmissionPilot signal allocationPhase differenceControl signal
An optical IQ modulator (IQM) including two parallel Mach-Zehnder modulators (MZM1, MZM2) generates single sideband data signals. A control unit (18) generates additional optical single sideband pilot signals (PS1, PS2) positioned in a lower and a higher sideband respectively, and also further pilot signals (PS3, PS4) in both sidebands. A IQ modulator output signal (MOS) converted into electrical monitoring signals (MOS) and monitored. A control unit (18) selects control signals (CS12, CS3, CS4) and controls the IQ modulator via its bias ports (6, 7, 8) till the power transfer functions (PTF) of the Mach-Zehnder modulators (MZM1, MZM2) and the phase difference (ΔΦ) between their output signals is optimized.
Owner:XIEON NETWORKS SARL
Power converter with input-side resonance and pulse-position demodulation feedback control
InactiveUS20030151929A1Efficient power electronics conversionDc-dc conversionCapacitanceConstant power
A DC power converter enclosing a regulated AC power supply within the overall design topology. The power transfer function incorporates a process wherein a portion of the negative AC signal, generated across the input winding of a power transformer, is intercepted by a power switch transitional state. The volt-second product of the intercepted AC signal is reflected into the DC input line voltage as an additive element allowing a resonant inductor to absorb the sum of both components. Thus peak voltage transferred to a resonant capacitor is two times the sum of voltage absorbed by the resonant inductor as opposed to simply doubling the DC input line voltage. Voltage across the resonant capacitor remains constant for variations in DC input line voltage within the limits of the input voltage regulating band. This is due to an inverse relationship between the DC input line voltage and voltage yielded by the negative AC signal, at point of interception by the timing pulse. The two components combine in a subtractive manner to cancel out the variation in DC input line voltage and maintain a constant voltage to the input of the AC power supply loop. Input current supplied by the Input DC line also varies inversely proportional to the applied input DC voltage within the regulating band. Thus: negative resistance describing a constant-power load line is derived directly from the peak input current.
Owner:FIGUEROA SALVADOR
Contactless power supply
InactiveUS20050018452A1Long life-span of useEfficient power transfer functionCoupling device connectionsTransformersElectric power transmissionElectric force
A contactless power supply is provided, which includes a main body; a primary circuit having a power input portion receiving main power, a switching circuit having a plurality of direct-current (DC) converter, and a primary transformer, which is disposed in one-side of the main body; and a secondary circuit having a secondary transformer which is disposed at a predetermined distance from the primary circuit and receiving power from the primary transformer contactlessly, a peripheral circuit which filters and rectifies the power, and a power supply unit supplying the rectified power to a control system. As described above, the contactless power supply has a long life span of use and a characteristic of non-occurrence of mis-operations as well as an efficient power transfer function even at the state of a low coupling coefficient and a large leakage inductance, due to a contactless power transfer, in which a load-side power supply control system is designed in various schemes so as to be adapted in various ways.
Owner:WINIAMANDO
Power converter with input-side resonance and pulse-position demodulation feedback control
Owner:FIGUEROA SALVADOR
Method and system for identifying optical signal modulation format
InactiveCN103281120ASimple structureGood value for moneyElectromagnetic transmissionDigital signal processingOptical power meter
The invention relates to a method and system for identifying a modulation format based on optical signals in the field of optical fiber communication. The method includes the steps that a TDC exerts certain dispersion values on input optical signals to be identified and then outputs the optical signals, after passing through an optical amplifier, the optical signals are injected into a non-linear power transfer function NPTF generating module, and a optical power meter measures signal average power of the output end of the non-linear power transfer function NPTF generating module; a control and digital signal processing module drives the TDC to generate a series of dispersion values and records each dispersion value and the signal average power, corresponding to each dispersion value, of the output end of the NPTF generating module, and the dispersion values and corresponding signal average power are stored as a dispersion-signal average power measured value array. Matching is carried out among various dispersion-signal average power samples with known modulation format signals and the dispersion-signal average power measured value array, and the modulation format of the best matched sample is discriminated as the modulation format of the input signals. The method and system for identifying the optical signal modulation format does not need any prior information at work, is suitable for signals with various modulation formats and speed and has the advantages of being simple in structure and high in cost performance.
Owner:HUAZHONG UNIV OF SCI & TECH
Power consumption estimation
InactiveUS20050008069A1Power supply for data processingAnalogue computers for nuclear physicsEngineeringPower transfer function
A process for deriving a power transfer function of a circuit. The power transfer function can be used to represent the real time power consumption of a circuit based on the status of the inputs. In one embodiment, the power transfer function is derived from frequency domain analysis of signals applied to the inputs of a circuit during tests of the circuit. In one embodiment, the inputs of the circuit are grouped in groups based on a commonality of power consumption of the signals. The inputs may be grouped by clustering squared coherencies associated with the inputs. The transfer function may be implemented in a power monitoring circuit having inputs coupled to the inputs of the circuit to provide a real time estimation of power consumption of the circuit.
Owner:NXP USA INC
Information handling system docking with coordinated power and data communication
ActiveUS9377814B2Reduce disadvantagesReduce problemsDigital data processing detailsDocking stationInformation processing
A docking station connects through a docking port and docking cable with an information handling system to support communication between the information handling system and docking station peripherals. On initial interface, one data lane of the docking port establishes a temporary management interface, such as an I2C management bus, to configure the docking station. After configuration, a docking manager, virtual wireless access point and power block cooperate to assign data lanes of the docking port and wireless communication resources to information transfer and power transfer functions based upon processing and communication tasks performed at the information handling system.
Owner:DELL PROD LP
Driving apparatus and image pickup apparatus
InactiveCN101207343AImprove efficiencyEasy to drivePiezoelectric/electrostriction/magnetostriction machinesMountingsTransducerEngineering
The present invention provides a driving apparatus and an image pickup apparatus, the driving apparatus has miniature drive force and high efficiency. An X-axis transducer (320x) generating elliptical vibration is used as driving source, alternatively on side of a mobile body (311x), according to separation construction of X frame (301) forming desired size as mobile object and a sliding body (330x) small than the X frame (301), both of them are fixed and integrated, by a slicing plate (332x) and a bearing (331x) on the small sliding body (330x), driving force transmission function and mobile direction guide function are collected, a large X frame (301) and a sliding body (330x) are integrated to only carry out follow movement, thus high efficiency of driving force transmission can be carried out only by forming rigidity on the sliding body (330x) side, alternatively, the high rigidity like on the sliding body (330x) side is unnecessary to the X frame (301) side, form of desired size by adopting light quality material is satisfied, and special guide mechanism for restraining the mobile direction of the X frame (301) is unnecessary.
Owner:OLYMPUS CORP
Information handling system docking with coordinated power and data communication
ActiveUS9304545B2Reduce disadvantagesReduce problemsDigital data processing detailsDocking stationElectric power transmission
A docking station connects through a docking port and docking cable with an information handling system to support communication between the information handling system and docking station peripherals. On initial interface, one data lane of the docking port establishes a temporary management interface, such as an I2C management bus, to configure the docking station. After configuration, a docking manager, virtual wireless access point and power block cooperate to assign data lanes of the docking port and wireless communication resources to information transfer and power transfer functions based upon processing and communication tasks performed at the information handling system.
Owner:DELL PROD LP
Information Handling System Docking with Coordinated Power and Data Communication
ActiveUS20150046623A1Reduced footprintReduce disadvantagesDigital data processing detailsDocking stationElectric power transmission
A docking station connects through a docking port and docking cable with an information handling system to support communication between the information handling system and docking station peripherals. On initial interface, one data lane of the docking port establishes a temporary management interface, such as an I2C management bus, to configure the docking station. After configuration, a docking manager, virtual wireless access point and power block cooperate to assign data lanes of the docking port and wireless communication resources to information transfer and power transfer functions based upon processing and communication tasks performed at the information handling system.
Owner:DELL PROD LP
Information Handling System Docking with Coordinated Power and Data Communication
ActiveUS20150046624A1Reduced footprintReduce disadvantagesDigital data processing detailsDocking stationElectric power transmission
A docking station connects through a docking port and docking cable with an information handling system to support communication between the information handling system and docking station peripherals. On initial interface, one data lane of the docking port establishes a temporary management interface, such as an I2C management bus, to configure the docking station. After configuration, a docking manager, virtual wireless access point and power block cooperate to assign data lanes of the docking port and wireless communication resources to information transfer and power transfer functions based upon processing and communication tasks performed at the information handling system.
Owner:DELL PROD LP
Power transmission mechanism of gas compressor and turbine
ActiveCN102691576AReduce processing costsImprove transmission efficiencyGas turbine plantsJet propulsion plantsImpellerReliable transmission
The invention discloses a power transmission mechanism of a gas compressor and a turbine, which is used for a mini-type ground gas turbine. The power transmission mechanism comprises a gas compressor impeller and turbine back tooth transmission mechanism, and a turbine shaft end conical surface nut locking device; the gas compressor impeller and turbine back tooth transmission mechanism is formed by engaging the turbine with a straight-line trapezoid back tooth and the gas compressor impeller with a straight-line trapezoid end tooth with each other; and the turbine shaft end conical surface nut locking device is formed by matching a locking nut with a conical surface with a shell, and is used for axially locking an engaging gear ring. The power transmission mechanism has the advantages of simple mechanism form, low machining cost and reliable transmission; and on the precondition of realizing a power transmission function of the gas compressor and the turbine, the axial size of the gas turbine is effectively shortened and the mechanism compactness is improved.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
Intra-cavity etalon with asymmetric power transfer function
InactiveUS7061946B2Optical resonator shape and constructionCoupling light guidesNon symmetricExternal cavity laser
Apparatus and methods for compensation of asymmetric mode pulling in external cavity lasers and the like. An apparatus includes a wavelength locker or etalon device to provide an asymmetric power transfer function and generate a transmission peak or peaks of asymmetric shape. The asymmetry of the transmission peak may be in the form of a steeper slope on the long wavelength side of the peak than on the short wavelength side. The asymmetry of the transmission peak or peaks may be structured to compensate or correct for asymmetric mode pulling effects that arise in laser gain media during single mode laser operation.
Owner:INTEL CORP
Optical IQ modulator control
Owner:XIEON NETWORKS SARL
Double-cone hydraulic tightening type traction transmission device
InactiveCN102635676ACompact structureLarge transmission rangeFluid gearingsHigh transmissionLoad force
The invention belongs to the technical field of a transmission system, and relates to a traction transmission device, in particular to a double-cone hydraulic tightening type traction transmission device, which comprises an outer friction wheel, an inner friction wheel, one or more than one group of speed control mechanisms and a hydraulic pressing mechanism. When pressure in a hydraulic oil chamber is increased, an inner conical roller and an outer conical roller are respectively matched with a rotating shaft in a sliding way and move inwards along a middle axis, so that the inner friction wheel is contacted with the conical surface of the inner conical roller, and the outer friction wheel is contacted with the conical surface of the outer conical roller. The power transfer function, the stepless speed changing function and the function of loading force control via the friction pair are integrated, and the double-cone hydraulic tightening type traction transmission device has the advantages of simple and compact structure, wide transmission scope, high transmission efficiency, large-scale power transfer, flexible and convenient control and the like.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Wireless charging systems and methods for increasing power transfer functions
ActiveUS20200412157A1Exclusive-OR circuitsBatteries circuit arrangementsTransmitter coilElectric power transmission
Embodiments describe a wireless charging system including an accessory device and a host device. The host device can include a housing having a charging surface and power transmitting circuitry coupled to a power source. The power transmitting circuitry can include an inductive transmitter coil configured to receive a first power and generate magnetic field, an amplifier coupled to the inductive transmitter coil and configured to output the first power to the inductive transmitter coil, an output sensor coupled to the inductive transmitter coil and configured to measure the first power to the inductive transmitter coil, and a power tracking controller coupled to the sensor probe. The power tracking controller can be configured to receive measurement of the first power, and generate a control signal based on the measured first power to modify an output impedance of the amplifier to output a second power different from the first power.
Owner:LOGITECH EURO SA
Design method of digital power supply loop compensator based on PIDalpha
ActiveCN110737196AStable, accurate and fast controlImprove phase marginControllers with particular characteristicsControl engineeringComputer science
The invention relates to a design method of a digital power supply loop compensator based on PIDalpha, thereby controlling the output voltage of a digital power supply stably, accurately and quickly.The method comprises the following steps: (1), drawing a digital power supply main power transfer function Bode diagram based on simulation software; (2), designing an analog two-zero-point two-pole compensator with the same zero and pole types as the PIDalpha digital loop compensator, and drawing a compensator Bode diagram; (3), converting the analog two-zero-point two-pole compensator in an s domain into a PID alpha digital loop compensator in a z domain; (4), carrying out programming based on structural characteristics of a PIDalpha digital loop compensator algorithm to realize functions; and (5), debugging the functions of the PIDalpha digital power supply loop compensator by a prototype experiment. According to the design method provided by the invention, a loop compensator with excellent performance can be designed for the digital power supply to realize stable, accurate, rapid controlling of the output voltage of the digital power supply.
Owner:NO 43 INST OF CHINA ELECTRONICS TECH GRP CETC
Friction clutch
InactiveCN102449338AStable torque deliveryIncrease coefficient of frictionFriction clutchesCouplingsGraphiteEngineering
Provided is a friction clutch which includes a carbon / graphite material such as a CC composite and hence can show a stable power transmission function over a wide range of areal friction pressure. Also provided is a friction disk assembly usable in the friction clutch. The friction clutch includes a friction disk assembly configured of a center hub part and a friction disk. The friction disk is equipped with a first frictional surface and a second frictional surface. The friction clutch further includes: a flywheel which faces the first frictional surface and is equipped with a third frictional surface; and a pressure plate which faces the second frictional surface and is equipped with a fourth frictional surface. At least one of the first to the fourth frictional surfaces is constituted of a combination of different materials which are a carbon / graphite material and a metal / ceramic material. The carbon / graphite material forms a carbon / graphite material-based frictional surface, and the metal / ceramic material forms a metal / ceramic material-based frictional surface. The ratio of the area of the metal / ceramic material-based frictional surface to the total area of the carbon / graphite material-based frictional surface and the metal / ceramic material-based frictional surface is 0.05-0.65, and the areal pressures between the first frictional surface and the third frictional surface and between the second frictional surface and the fourth frictional surface during power transmission are 10-250 N / cm2 each.
Owner:AKROS
Self-adaptive damping control strategy of virtual synchronous generator technology (VSG)-based inversion-type distributed power supply
ActiveCN108736517AImprove output characteristicsEasy to controlSingle network parallel feeding arrangementsVirtual synchronous generatorDamping factor
The invention relates to the technical field of control of an inversion-type distributed power supply, in particular to a self-adaptive damping control strategy of a virtual synchronous generator technology (VSG)-based inversion-type distributed power supply. An active power transfer function is built for a control system of the VSG-based inversion-type distributed power supply, the self-adaptivedamping control strategy is made by analyzing influence of a damping coefficient on system output, and the strategy is used for changing the damping coefficient to achieve adjustment n system responserate and reduce fluctuation of the system generated by disturbance according to deviation between an active power output from the inversion-type distributed power supply in real time and a set activepower reference value. By the self-adaptive damping control strategy, control of the grid-connected inversion-type distributed power supply can be achieved, the output characteristic of the inversion-type distributed power supply is more excellent by the control strategy, the interference of the system can be handled very well, stable output is maintained, the control strategy has higher dynamiccharacteristic, and an effective strategy is provided for control of the inversion-type distributed power supply in a power distribution network.
Owner:ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
Method and system for realizing electrical dispersion compensation
InactiveCN101039152AImproved ability to compensate for dispersionReduce nonlinear intersymbol interferenceDistortion/dispersion eliminationTransport systemEngineering
The invention relates to dispersion compensation technology field in a fiber transmission system, discloses a method which realizes electric dispersion compensation. The method comprises as follow: A. a reverse power transfer function filter is arranged before the linear forward feedback equalizer; B. after the electrical signal is received by the reverse power transfer function filter, the nonlinear intersymbol interference which exists in the electrical signal is reduced via filtering, thus the electrical signal which is mainly consisted of linear inter-symbol interference is remained and the electrical signal is outputted to the linear forward feedback equalizer; C. the forward feedback equalizer balances the inputted electrical signal and outputs the balanced electrical signal to the clock and data recovering (CDR) unit. The invention also discloses a system to realize the electric dispersion compensation. By adopting the invention, the nonlinear inter-symbol interference degree is reduced and the dispersion compensation ability of the linear forward feedback equalizer is greatly improved.
Owner:BEIJING UNIV OF POSTS & TELECOMM +1
Traction drive continuously variable transmission
InactiveCN102635677ACompact structureLarge transmission rangeFluid gearingsEngineeringMechanical equipment
The invention belongs to the technical field of a transmission system of mechanical equipment, relates to a mechanical transmission and particularly relates to a traction drive continuously variable transmission. The traction drive continuously variable transmission comprises an input bevel gear, a driven helical gear, an outer frictional wheel, an outer conic idler wheel, a driving pin, an inner frictional wheel, an inner conic idler wheel, a bearing support, a bearing and a hydraulic system; when a hydraulic chamber is compressed, the inner conic idler wheel and the outer conic idler wheel move outwards along a middle shaft line, so that the inner frictional wheel is contacted with the conic surface of the inner conic idler wheel to drive a planetary frame to rotate, the outer frictional wheel is contacted with the conic surface of the outer conic idler wheel to drive a gear ring to rotate, and the energy of a planetary line solar wheel is output through rotation of the gear ring and the planetary frame. With the adoption of the traction drive continuously variable transmission, the functions of power transmission, stepless speed change and frictional pair normal loading force control are integrated into a whole; and the traction drive continuously variable transmission has the advantages of being simple and compact in structure, wider in transmission range, high in transmission efficiency, high in transmission power and flexible and convenient in controlling and the like.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Simulated power transfer control device and power transfer control method realized by adopting same
InactiveCN104333115ARealize analog transfer controlAchieving battery powerEmergency power supply arrangementsControl signalEngineering
The invention discloses a simulated power transfer control device and a power transfer control method realized by adopting the device, relating to the field of power transfer control of aircrafts, and aiming at solving the problems of lack of a power transfer function in existing aircraft launching control systems and incapability of checking power supply access of a battery of an electric system. Airborne equipment disclosed by the invention is mounted on an aircraft; the airborne equipment, a power transfer control combination, a computer and a power supply source are connected with one another by cables; the power transfer control combination comprises a control switch and an indictor light. The power source signal output end of the power supply source is connected with the power source signal input end of the control switch, and the control switch is connected with the display signal input end of the indicator light. A control signal of the control switch is connected with the control signal of the computer, the power source signal output end of the control switch is connected with the power source signal input end of the airborne equipment, the detection signal output end of the airborne equipment is connected with the detection signal input end of the computer, and aircraft superposed power supply and simulated power transfer control are realized through computer control. The device and the method can be used for ground test control of the aircrafts.
Owner:BEIJING INST OF ELECTRONICS SYST ENG
Device for measuring shaping index of all-optical regenerator
ActiveCN110855354AOvercome the problem of inaccurate output optical signal-to-noise ratioAccurate measurementElectromagnetic transmissionOptical power meterEngineering
The invention discloses a device for measuring the shaping index of an all-optical regenerator. The device comprises an optical signal generation unit, a power-adjustable optical amplifier, an ASE noise loading module, an optical splitter, an all-optical regenerator to be measured and an optical power meter, specific test time, the noise loading power of the ASE noise loading module is adjusted; completing the measurement of the power transfer function of the to-be-measured all-optical regenerator, the gain size of the working point, the optical signal to noise ratio of the input degradation signal and the total gain of the degradation signal, and finally calculating an optical shaping index parameter which can be used for representing the optical signal to noise ratio improvement capability of the all-optical regenerator according to the measurement index.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Self-protection three-column amorphous alloy transformer
InactiveCN103578705AEffective protectionWith voltage conversionTransformers/inductances coils/windings/connectionsEmergency protective circuit arrangementsEpoxyLow voltage
The invention discloses a self-protection three-column amorphous alloy transformer which comprises an amorphous alloy iron core, integrated winding coils, an upper clamp and a lower clamp, wherein the integrated winding coils comprise high-voltage coils and low-voltage coils. The amorphous alloy iron core comprises two square iron core frames, the integrated winding coils are respectively sleeved on three core columns formed by the two iron core frames, the high-voltage coils and the low-voltage coils in the integrated winding coils are square aluminum foil coils made of epoxy resin by casting, the high-voltage coils are sequentially serially connected with overload protection devices through lead terminals, so that the transformer has voltage conversion and power transfer functions, further has breaking current and lightning, short circuit and overload protection functions and is effectively protected, the amorphous alloy iron core and the integrated winding coils sleeved on the amorphous alloy iron core are connected between the upper clamp and the lower clamp in a locked manner, and one buffer is arranged between one axial end of the amorphous alloy iron core and the upper clamp, and one buffer is arranged between the other axial end of the amorphous alloy iron core and the lower clamp.
Owner:KUNSHAN HEWANG ELECTRONICS
Power consumption estimation
InactiveUS7363208B2Power supply for data processingAnalogue computers for nuclear physicsSignal transfer functionEngineering
A process for deriving a power transfer function of a circuit. The power transfer function can be used to represent the real time power consumption of a circuit based on the status of the inputs. In one embodiment, the power transfer function is derived from frequency domain analysis of signals applied to the inputs of a circuit during tests of the circuit. In one embodiment, the inputs of the circuit are grouped in groups based on a commonality of power consumption of the signals. The inputs may be grouped by clustering squared coherencies associated with the inputs. The transfer function may be implemented in a power monitoring circuit having inputs coupled to the inputs of the circuit to provide a real time estimation of power consumption of the circuit.
Owner:NXP USA INC
Axial-loading biconical traction drive device
ActiveCN102817984ACompact structureLarge transmission rangeFriction gearingsMechanical equipmentAxial force
The invention belongs to the technical field of mechanical equipment, and particularly relates to an axial-loading biconical traction drive device. The axial-loading biconical traction drive device comprises an input shaft, a spline, a cam loading mechanism, more than one group of speed regulating mechanisms, a hydraulic compaction mechanism, an inner support shaft and an output wheel; a peripheral unit is a box body; a loading wheel is installed on the input shaft by the spline, an input wheel is installed at the right end of the output shaft by a bearing, rolling bodies are installed between the loading wheel and the input wheel, one end of the inner support shaft is connected with one end of a hydraulic rod, and the other end of the inner support shaft is vertically connected at the axle center of the inner side of double cones; and the input wheel and the input shaft are coaxial, and the left sides and the right sides of the double cones respectively prop against the input wheel and the output wheel. The axial-loading biconical traction drive device integrates the functions such as power transmission, stepless speed change, self-adaption axial force into a whole, and has the advantages that the structure is simple and compact, the transmission range is wide, the transmission efficiency is high, the power transmission is large, the control is flexible and convenient, and the like.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
System and method for determining working point of all-optical PAM (Pulse Amplitude Modulation) regenerator
ActiveCN108768512AImprove test efficiencySimple measurement systemElectromagnetic transmissionData acquisitionPower transfer function
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
PAM signal all-optical regeneration device and method
ActiveCN108075832ADoes not affect transfer rateAchieve regenerationFibre transmissionEngineeringNon-linear effects
The invention discloses a PAM signal all-optical regeneration device and method. The regeneration of the PAM signal all-optical is realized by reusing multiple PAM signal all-optical regeneration units, specifically, an input-output power transfer function meets a step function through a non-linear effect of NOLM (non-linear optical fiber loop mirror); through the above input power, the shake caused by the noise thereof can become smooth at an output end, the process is realized in a full-optical domain, the transmission rate cannot be influenced, and the device and method can adapt to the existing high-speed transmission system.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
Vehicle output torque control method, device and system, and storage medium
ActiveCN111516689AAvoid slow accelerationImprove drivabilityHybrid vehiclesControl devicesControl theoryPower apparatus
The invention discloses a vehicle output torque control method. The control method comprises the following steps: obtaining the actual power torque of a vehicle power device; obtaining the actual acceleration of a power wheel of the vehicle; establishing a power transfer function of the vehicle according to the actual power torque and the actual acceleration of the power wheel; determining the current resonant frequency of the vehicle according to the power transfer function; determining the torque gradient of the vehicle according to the current resonant frequency, wherein the torque gradientis the variable quantity of torque in unit time; and controlling the vehicle power device to operate according to the torque gradient of the vehicle. The invention further discloses a vehicle outputtorque control device and system, and a storage medium. The torque gradient can be determined according to the current resonant frequency of the vehicle, and the power device of the vehicle is controlled to operate according to the torque gradient, so that the target torque is accelerated, slow acceleration is avoided, and the drivability is improved.
Owner:GEELY AUTOMOBILE INST NINGBO CO LTD +1
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