116 results about "Change stage" patented technology

The invention relates to the technical field of the optimization of computer performance and particularly relates to a dispatching method for working load of an elastic cloud computing platform. Thedispatching method comprises the steps of initializing virtual machines and tasks and combining the virtual machines according to the relative load among the tasks; dividing the total execution time of the tasks into setting number of scheduling phases, and working out an optimal scheduling policy according to the working load of a current task by a dispatching system; then dividing or combining the scheduling phases according to the degree of similarity of the working loads of two adjacent scheduling phases; finally adjusting the number of times of simulation to the sequence of the divided or combined scheduling phases in a self-adaption way so as to determine the computing time of the next scheduling phase until the end of the program. According to the dispatching method, the adaptive multi-tasking load change stage can be configured reasonably, so that the dispatching performance of a whole system is improved, and the test time is reduced.

The invention discloses a low-loss MnZn ferrite material sintering method. The method includes four temperature change stages which mainly induce: a, the first temperature rising stage, b, the second temperature rising stage, c, the temperature maintaining stage and d, the temperature falling stage. According to the method, due to the fact that temperature and oxygen partial pressure are controlled in the whole sintering process of temperature rising, temperature maintaining and temperature falling, loss of MnZn power ferrite can be reduced. The method has the advantages of being low in sintering temperature and low in loss when applied to preparing the MnZn ferrite, and the efficiency of MnZn ferrite elements is greatly improved.

The invention relates to an inverter power tube open circuit fault diagnosis method in a permanent magnet synchronous motor control system. According to the method, a differential current state observer is designed based on a voltage balance equation to estimate the ideal differential current of the permanent magnet synchronous motor, and the distortion amount of the motor differential current isestimated by combination of the measured value of the differential current; and then a corresponding fault detection and positioning algorithm is designed according to the distortion rule of the motordifferential current caused by faults, so that the rapid and accurate on-line fault diagnosis of the circuit fault of the inverter switch tube is realized. The method has the advantages of being highin anti-jamming capability, strong in robustness, high in detection speed, high in detection accuracy and the like. In addition, the method can also be suitable for motor speed stabilization and speed change stages, and is suitable for two different modulation modes (a spatial voltage pulse width modulation mode or a carrier-based pulse width modulation mode). Therefore, the method is a universalvoltage source type inverter single switch tube open circuit fault diagnosis method.

The invention discloses a method and apparatus for controlling overturning of a multi-rotor aircraft. The method comprises receiving an overturning command transmitted from a remote controller; during the overturning process of the multi-rotor aircraft, circularly executing the following steps until the attitude angle of the multi-rotor aircraft satisfies a preset overturning stopping condition; detecting the attitude angle of the multi-rotor aircraft, wherein the value range of the attitude angle is -180DEG to +180DEG; acquiring the target angular speed corresponding to the current attitude angle; calculating the overturning power corresponding to the target angular speed; utilizing the overturning power to control overturning of the multi-rotor aircraft; and when the attitude angle of the multi-rotor aircraft satisfies the preset overturning stopping condition, controlling autonomous stabilization of the multi-rotor aircraft. The method for controlling overturning of a multi-rotor aircraft can realize unique correspondence between the attitude angle and the multi-rotor aircraft so as to provide the overturning power which changes stage by stage during the whole overturning process of the multi-rotor aircraft, and completes smooth and stable overturning of the multi-rotor aircraft.

A multistage transmission is provided that smoothly operates with a small force without the necessity of a shift clutch, that does not cause a loss of switching time during shifting, and that does not cause escape of a driving force as well as provides a small shift shock. When shift drive means executes upshift to a one-step-upper speed-change stage reduced in reduction ratio by one stage, normal rotation odd-numbered stage cam rods Cao and normal rotation even-numbered stage cam rods Cae alternately operate normal rotation odd-numbered stage engaging members Rao and the normal rotation odd-numbered stage engaging members Rae for shifting.

The invention discloses a method for performing remote analysis and diagnosis decision-making on an operation state at bearing bushing temperature of a hydroelectric generating set. The method comprises the following steps: establishing a state analysis foundation database for the bearing bushing temperature of the hydroelectric generating set and a bushing temperature failure database; remotely monitoring and acquiring important parameters, such as the bearing bushing temperature of the hydroelectric generating set; by adopting a two-stage pattern analysis method for the bearing bushing temperature of the set, i.e. analysis is performed on the change of the bearing bushing temperature under the working conditions of the starting-up mode and the operation mode of the hydroelectric generating set, and by adopting a three-stage trend analysis method, i.e., analysis is performed on the bushing temperature steep rise stage, the bushing temperature slow change stage and the bushing temperature steady state stage of the bearing bushing temperature in a time slot from starting up to steady-state operation of the hydroelectric generating set, performing comprehensive analysis on indexes, such as temperature rise average speed, instantaneous speed, maximum speed and steady-state bushing temperature change rate during operation at the bearing bushing temperature of the hydroelectric generating set, and finally, performing the remote analysis and the diagnosis decision-making on the operation state at the bearing bushing temperature of the hydroelectric generating set.

A hydraulic control apparatus of a vehicular automatic transmission has a plurality of hydraulic friction engagement devices that are selectively engaged and released to establish a plurality of forward speed change stages of different speed change ratios. The forward speed change stages are achieved through engagement of predetermined friction engagement devices, of the plurality of friction engagement devices. If it is determined that a predetermined speed change stage corresponding to a predetermined shift output is not established, the hydraulic control apparatus identifies a hydraulic friction engagement device having a bad engagement that is a cause of the non-establishment of the predetermined speed change stage, on the basis of the state of engagement oil pressure of the predetermined friction engagement device.

Disclosed is a control device for a continuously variable transmission (4) that has, as forward speed change stages, a first speed change stage (32) and a second speed change stage (33).The control device comprises a coordinated speed change means (12a) that carries out a coordinated speed changing in such a manner that when the speed change stage of an auxiliary transmission mechanism (30) is about to be changed, a speed change speed of the auxiliary transmission mechanism (30) is coordinated with a variator (20) and the variator (20) is controlled to carry out a speed change in a direction opposite to that of the auxiliary transmission mechanism (30) while carrying out the speed change operation of the auxiliary transmission mechanism (30), and a torque control means (12b) that carries out a torque regulating control during the coordinated speed changing under up-shifting by the coordinated speed change means, the torque regulating control being a control for effecting a torque-up operation to a driving source (1) after effecting a torque-down operation to the driving source and including a timing through which a starting time point of a drive force gap caused by the coordinated speed changing is advanced and a timing through which an ending time point of the drive force gap is delayed.

The invention is applicable to the field of motors, and provides a method and a system for identifying the rotational inertia of an alternating current servo system. The method comprises the following steps of: acquiring time, a speed change value, and an average torque of a first speed change stage at the first speed change stage of the alternating current servo system to obtain a first speed change stage motion equation; acquiring time, a speed change value and an average torque of a second speed change stage at the second speed change stage of the alternating current servo system to obtain a second speed change stage motion equation; and calculating rotational inertia according to the difference between the first speed change stage motion equation and the second speed change stage motion equation, wherein the average speed of the first speed change stage is the same as that of the second speed change stage. The technical scheme has the advantages of high identification accuracy of the rotational inertia.

The invention discloses flexible shaft toughening equipment and flexible shaft toughening forming method for bent glass. The equipment comprises a transition section, a forming section and a toughening section, the transition section comprises a plurality of tensioned flexible cables and transition roller ways installed on the flexible cables, the flexible cables and the transition roller ways form a forming net, and in the process that heated glass passes through the forming net, the glass is gradually formed; the forming section is provided with a plurality of upper forming arc plates and aplurality of lower forming arc plates, the upper forming arc plates and the lower forming arc plates are respectively provided with forming roller ways or a plurality of rotatable forming roller wheels, and a forming channel is formed between the forming roller way or the plurality of forming roller wheels on the upper forming arc plates and the forming roller way or the plurality of forming roller wheels on the lower forming arc plates; and the equipment can also comprise a shape stabilizing section to correct the shape of the curved glass. By utilizing the equipment provided by the invention, the curved glass meeting the requirements is obtained after the glass is subjected to a gradual change stage, a forming stage and a shape stabilizing stage, and toughening is performed, so that theprecision and quality of the curved glass are improved.

A beam pattern changing structure for a head lamp is provided, which includes a light source provided in the head lamp to emit light, a reflector provided in the head lamp to reflect the light irradiated through the light source, a shield provided in front of the reflector, and an actuator mounted on the shield to make the shield rotatable. Accordingly, since low beams, high beams, and diverse beam pattern regions in the beam pattern changing stages are all implemented through one light source, the driver's visibility can be maximally secured and the glare of the opposite vehicle can be prevented. Further, the designs of the head lamps for the high beams and the low beams are the same, and thus the merchantability is increased.

The invention relates to a controlling method for driving the linear motor of the impacting device, wherein the impacting device has a coupling device (4) loose between a mover (5) and a hammer (6), and has a tractive stage and a pressure stage in the impacting period when the hammer applies force to the tools or the punch. In the tractive stage, the coupling device is sticked on the contact surface at the side of the mover through a unilateral forced contact piece, and is sticked on the contact surface at the side of the hammer in the pressure stage. There is a changing stage between the tractive stage and the pressure stage. wherein the unilateral forced contact is changed through a gap length, the mover is adjustablely loose on the unilateral forced contact of the contact surface and builds a unilateral forced contact on the other contact surface, which is divergingly triggered from the changing stage of the tractive stage to the pressure stage through the place relative to the pole periodic of the salient pole of the linear motor.