Instantaneous energy-based soft sensing method of electric actuator torque

Abstract

The invention relates to an instantaneous energy-based soft sensing method of the electric actuator torque, which takes a digital signal processing (DSP) chip and a CS5460A electric energy chip as a core, and the output torque of the electric actuator is detected by an instantaneous energy soft sensing method; the voltage signals and the current signals of an electric motor are measured in a non-contact way through a current mode voltage transformer and a Hall sensor; the voltage signals and the current signals of the electric motor are input into a CS5460A voltage channel and a CS5460A current channel through a voltage conversion circuit and a filter circuit, so the 24-bit energy signal is obtained through calculation; and the serial peripheral interface (SPI) like mode with a photoisolator is adopted to acquire the instantaneous energy, so the control precision, the instantaneity, the antijamming capability and the like of the output torque detection of the electric motor are ensured.

Description

technical field [0001] The invention relates to a measurement technology, in particular to a soft measurement method for the torque of an electric actuator based on instantaneous energy. Background technique [0002] More and more factories adopt automatic control, and manual operation is replaced by machinery or automation equipment. People require the actuator to be able to act as the interface between the control system and the mechanical movement of the valve, and the actuator is required to enhance work safety performance and environment. protection performance. In some dangerous occasions, the automatic actuator device can reduce the injury of personnel. The output torque of the electric actuator is an important parameter of the actuator and a key technical index to ensure the control accuracy and normal operation of the actuator. During on-site operation, in order to ensure that the mechanism is opened and closed in place, and to ensure the normal operation of the m...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the poor adaptability of the current electric actuator output torque test environment, and proposes a soft measurement method for electric actuator torque based on instantaneous energy. The output torque of the motor is calibrated through the instantaneous energy soft measurement method; The current and voltage signals of the motor are collected by the method, which enhances the stability and anti-interference ability of the torque measurement; the instantaneous energy is collected by using the SPI-like mode, and the SPI channel is equipped with a photoelectric isolator, which ensures the control accuracy of the motor output torque detection. Real-time, etc.

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