15 results about "Torque error" patented technology

A method for controlling a torque output of a hybrid power machine, comprising the following: during a temporary increase in torque in response to a change in the target output torque of a powertrain (200), setting a power machine output torque and a motor output torque in response to a change in the target output torque of the powertrain (200), Adjusting the motor output torque in response to a response to a speed of a drive wheel (285) of a torque converter (206), characterized by Adjusting the power machine output torque for a power machine torque error in response to the settings of a motor torque.

The application discloses a permanent magnet synchronous motor model prediction torque control method based on a hybrid mode optimization. The method first constructs a reference voltage vector through a torque error target function and a discretization prediction model of the permanent magnet synchronous motor, and then designs a hybrid mode optimization algorithm. The algorithm first designs a double-vector mode optimization on the sector boundary of a voltage space vector diagram, and then designs a three-vector optimization mode based on a discrete space vector modulation inside the sector. The optimal synthesized voltage vector obtained by the hybrid mode optimization algorithm is transmitted to a voltage error target function to realize the switching of the two modes, so that the control execution mode and the optimal synthesized voltage vector are determined. The control method disclosed by the application has high freedom to adjust the amplitude and position of the synthesized voltage vector, and thus has high steady-state performance of the control system and fast torque dynamic response in the full speed range.

The present application relates to a kind of based on test bench silicon oil fan clutch simulation model correction method, belong to vehicle thermal management simulation and parameter correction technical field.The method obtains the active end speed, fan speed, transmission torque and shell temperature in silicon oil fan clutch test bench test, and calculates test slip rate;Establish simulation model and set initial viscosity-temperature function, initial heat transfer coefficient and initial flow resistance coefficient;Simulation torque, simulation shell temperature and simulation slip rate are obtained by simulation;Simulation results are compared with test results, and torque error, temperature error and slip rate error are calculated;According to error result, viscosity-temperature function, heat transfer coefficient and flow resistance coefficient are iteratively corrected until error meets preset threshold, and the corrected simulation model is output.The method can improve the comprehensive prediction accuracy of silicon oil fan clutch simulation model to torque, temperature and slip rate.

The application discloses a kind of live-line working robot working state on-line monitoring method, system and equipment, the application includes based on target tightening torque, target axial pretightening force and target nut angle and is tightened to nut, generates actual tightening torque, actual axial pretightening force and actual nut angle;Using the target tightening torque of nut, target axial pretightening force, target nut angle, actual tightening torque, actual axial pretightening force and actual nut angle, the tightening torque error, axial pretightening force error and nut angle error of nut are calculated;Using tightening torque error, axial pretightening force error and nut angle error, the degree of rotation of nut is calculated, and according to degree of rotation, nut is rotated, target monitoring information is generated and sent to man-machine interface.Solve the technical problems that nut tightening state does not have perfect monitoring method, and there is security risk.The application acquires nut working state in real time, and then improves the reliability of live-line working robot operation.

The present application relates to a kind of based on test bench silicon oil fan clutch simulation model correction method, belong to vehicle thermal management simulation and parameter correction technical field.The method obtains the active end speed, fan speed, transmission torque and shell temperature in silicon oil fan clutch test bench test, and calculates test slip rate;Establish simulation model and set initial viscosity-temperature function, initial heat transfer coefficient and initial flow resistance coefficient;Simulation torque, simulation shell temperature and simulation slip rate are obtained by simulation;Simulation results are compared with test results, and torque error, temperature error and slip rate error are calculated;According to error result, viscosity-temperature function, heat transfer coefficient and flow resistance coefficient are iteratively corrected until error meets preset threshold, and the corrected simulation model is output.The method can improve the comprehensive prediction accuracy of silicon oil fan clutch simulation model to torque, temperature and slip rate.

The utility model relates to the technical field of torsion spring detection, in particular to a torsion spring tolerance performance detection device, which comprises a test board provided with a fixed column, a torsion spring main body and a test component. The torsion spring body is transversely installed on the fixing column in a penetrating mode. The testing component comprises a torque testing block, a torque sensor is arranged on the end side of the torque testing block, the defects of traditional manual detection are effectively overcome through automatic structural design, a reciprocating motor drives a rotating shaft and the torque testing block to rotate through a transmission gear and a gear block, manual torque application is replaced, and the testing efficiency is improved. An operator only needs to set parameters to start a detection process, the labor intensity is greatly reduced, meanwhile, the torque sensor monitors and feeds back torque data in real time, the torque error can be controlled within an extremely small range in combination with precise regulation and control of the reciprocating motor by the controller, and compared with a traditional manual mode, the precision and stability of torque application are remarkably improved.

This application discloses a method, apparatus, device, and readable storage medium for suppressing compressor speed fluctuations. This application relates to the field of motor control technology. The compressor speed fluctuation suppression method includes: determining the minimum torque error average value of the compressor within a preset period based on preset conventional phase compensation values ​​and phase compensation adjustment values; adjusting the phase of the observed torque of the compressor based on the target phase compensation value corresponding to the minimum torque error average value to obtain the target torque; determining a current command compensation value based on the target torque; compensating the current command of the motor system to which the compressor belongs based on the current command compensation value; and controlling the operation of the motor system based on the compensated current command. This application solves the problems of compressor vibration and noise deterioration, as well as limited load capacity and operating range, caused by the inability to effectively suppress speed fluctuations during low-frequency compressor operation.

This invention discloses a torque-angle sensor for measuring minute torque, comprising a housing, a torque elastomer, a bearing, a strain gauge, a PCBA circuit board, and an angle detection module. The housing contains an inner cavity, within which the torque elastomer is rotatably mounted. The torque elastomer includes a support shaft, a deformation portion, and a sensor output shaft. The bearing is fixedly mounted within the left end of the inner cavity. The left end of the support shaft passes through the bearing and is supported and positioned by it. The right end of the support shaft, the deformation portion, and the sensor output shaft are all suspended and do not contact the housing. The sensor output shaft extends to the right beyond the housing. The strain gauge is attached to the deformation portion. The angle detection module cooperates with the left end of the support shaft. In this invention, the end of the torque elastomer with the strain gauge is not supported and positioned by the bearing, which eliminates the initial torque error introduced by the bearing, significantly improving the sensor's sensitivity to torque measurement and enabling accurate measurement of the minute torque of a micro-motor. This invention can simultaneously measure torque and angle.

This invention relates to the field of motor control technology, and in particular to a segmented hybrid predictive torque control method for permanent magnet synchronous motors under low carrier ratios. This method first monitors the motor's operating status in real time and dynamically divides it into a large-error transient region, a small-error adjustment region, and a steady-state ripple suppression region based on torque error, flux linkage error, and speed. For each region, three hybrid strategies are employed: multi-vector model predictive control, a hybrid strategy of model predictive control and duty cycle modulation, and an improved model predictive control based on disturbance observation compensation. This invention, through a partitioned matching strategy, effectively solves the problems of low model prediction accuracy and prominent contradictions between dynamic response and steady-state ripple in traditional predictive torque control at low switching frequencies, significantly improving the system's control performance, accuracy, and robustness across the entire operating range, and is particularly suitable for medium- and high-voltage high-power drive applications.

This invention belongs to the field of servo system control technology, specifically relating to a dynamic error compensation control method and system for a servo drive system. This invention effectively reduces torque fluctuations in the servo system during high-speed operation by calculating torque errors based on real-time data and generating compensation amounts. By correcting the three-phase current signals, it further improves the accuracy of current commands and reduces the impact of harmonic interference on system performance. Combining motor rotor acceleration and current ripple information, it comprehensively considers nonlinear disturbance factors and generates a total compensation strategy by superimposing compensation torque. Simultaneously, it adjusts the proportional gain and feedforward weight according to the dynamic mapping relationship between the rate of position change and the harmonic distortion rate, enabling the servo system to maintain optimal control performance under different operating conditions. Finally, all compensation results are injected into the feedforward and feedback channels, generating corresponding drive pulse signals based on space vector modulation, achieving efficient drive control of the servo system.

This invention relates to an automated calibration method and system for an embedded permanent magnet synchronous motor (IPMSM), belonging to the field of embedded permanent magnet synchronous motors. This technical solution integrates motor zero-position calibration, parameter calibration, and maximum torque per ampere (MTPA) calibration to construct a complete and efficient automated calibration process. Specifically, motor zero-position calibration uses a high-precision encoder to monitor the rotor position in real time and quickly locks the rotor at zero position using a closed-loop control algorithm. Parameter calibration employs an optimization method based on an isotorque line model, maximizing motor torque output by adjusting the current distribution strategy. Under these conditions, the calibration time for a single motor is reduced to 1 / 5 of the traditional method, and the torque error is controlled within 5%, effectively improving the dynamic response speed of motor control performance and providing technical support for the mass production of motors.

The present application belongs to the technical field of hydraulic control, and discloses a large-diameter high-pressure ball valve hydraulic torque feedback adaptive control system; comprising: a multi-modal sensing module: used for collecting the torque of the high-pressure ball valve stem, the position of the valve stem, the oil pollution degree and the oil temperature, and performing corresponding filter replacement warning and temperature warning; an adaptive control module: used for denoising the torque and the position, calculating the torque error and the position error, optimizing the PID parameters of the PID control algorithm, realizing the composite closed-loop control of the torque and the position, and obtaining the control instruction; obtaining the compensated control instruction through dynamic friction compensation; a hydraulic power module: used for adjusting the pump displacement and the overflow valve opening degree according to the compensated control instruction, and outputting the oil to the actuator module; an actuator module: used for receiving the oil to drive the hydraulic motor to operate; the present application guarantees the accuracy and stability of torque control.

The application discloses an improved optimal tracking rotor control method for MPPT of a wind turbine, and comprises the following contents: based on the basic principle of a traditional OTR method, a wind turbine controller introduces a compensation loop of the difference between aerodynamic torque and optimal torque in an electromagnetic torque instruction, and dynamically adjusts a compensation coefficient in the compensation loop according to a current wind speed measurement value and a wind wheel acceleration signal, so as to adjust the torque error compensation amount under different wind speeds, thereby mainly enhancing the MPPT performance of the wind turbine in a high wind speed area. Compared with the traditional OTR method adopting a constant compensation coefficient, the method can obtain more wind energy capture amount with a smaller load cost.