A voltage parameter detection device of a motor driver and the motor driver

Abstract

The application provides a voltage parameter detection device for a motor driver and the motor driver, wherein the device acquires input voltage of the motor driver from different sampling terminals through two independent sampling modules; besides, the two independent sampling modules are separately powered by two independent power sources to avoid common failure of the sampling modules caused bypowered by the same power source; a controller receives two input voltage sampling signals acquired by the sampling modules through two different ports to decouple two ways of sampling signals and avoid common failure caused by the same port for receiving sampling signals; the controller checks the two input voltage sampling signals, when the input voltage sampling signals are identified as beinginaccurate, turn-off control signals are output through an output port to control the motor driver to stop torque output to avoid loss of control of output torque in the motor driver.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to a voltage parameter detection device and a verification method of a motor driver. Background technique [0002] The system variables of the motor driver, such as the input voltage and output voltage of the motor driver, are used for output torque control. The sampling accuracy of the above system variables will directly affect the torque control accuracy or torque monitoring accuracy of the motor driver. [0003] At present, the sampling method of the input voltage and output voltage of the motor driver has the possibility of common cause failure, resulting in the inability to check the rationality of the sampling variables or the inaccurate rationality check, which ultimately leads to low torque control accuracy of the motor driver. Or the output torque is out of control. Among them, common cause failure refers to the simultaneous failure of two or more units ...

AI Technical Summary

Problems solved by technology

[0003] At present, the sampling method of the input voltage and output voltage of the motor driver has the possibility of common cause failure, resulting in the inability to check the rationality of the sampling variables or the inaccurate rationality check, which ultimately leads to low torque control accuracy of the motor driver. or output torque out of control

Images