Intelligent alternating current frequency conversion control system of electric actuator

Abstract

The invention discloses an intelligent alternating current frequency conversion control system of an electric actuator, which comprises a hardware part and a software part and is characterized in that the hardware part adopts a modular design and comprises a microprocessor, A / D (Analog-to-Digital) and D / A (Digital-to-Analog) converters, a Chinese display circuit, an optical isolation circuit, a rectified three-phase circuit, a three-phase inverting circuit, an inversion driving circuit, a high-speed strong-current isolation circuit, a surge protection circuit, a high-frequency filter circuit, a filter circuit and an output protection circuit; all the component units take the microprocessor as the core and are connected with the microprocessor in a star-type way; the A / D and D / A converters are embedded in the microprocessor; the microprocessor is connected with the Chinese display circuit through a communication port; the microprocessor is connected with the three-phase inverting circuit sequentially through the high-speed strong-current isolation circuit and the inversion driving circuit; and the software part comprises a main program, a human-computer interface processing program, an automatic debugging program, a fault processing program, a digital-to-analog conversion and data processing program and a manual operation fault processing program.

Description

technical field [0001] The invention relates to controller technology, specifically an intelligent AC frequency conversion control system for electric actuators, which is suitable for intelligent measurement and automatic control of production processes in power plants, metallurgy, chemical industry, petroleum, building materials, light industry, water treatment and other industries. Background technique [0002] At present, the known electric actuators are mainly composed of sensors, controllers, reducers, motors and connecting parts. The electric actuator is a servo mechanism driven by a single-phase AC servo motor, a three-phase AC servo motor, a three-phase DC variable frequency motor or a three-phase AC variable frequency motor. The electric actuator is compared and amplified by the controller connected with the electric actuator to receive the signal from the regulator or computer and the signal fed back by the electric actuator sensor, and output enough power to make ...

AI Technical Summary

Problems solved by technology

However, the function of the control scheme is not perfect, and it does not have the function of "flexible execution", and the technical scheme still needs to be improved

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