Control method of valve electric actuator based on active disturbance rejection control algorithm

An active disturbance rejection control, valve electric technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of few settable parameters, lack of field bus support, and not friendly enough.
CN109725536AActive Publication Date: 2019-05-07NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2019-05-07

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Abstract

The invention discloses a control method of a valve electric actuator based on an active disturbance rejection control algorithm. The method includes steps: establishing a motor output shaft model, and obtaining a dynamic equilibrium equation of a motor output shaft; establishing a gear deceleration mechanism model, and simplifying the model as a first-order linear system; establishing a screw rodtransmission mechanism model, and converting rotation motion to linear motion of an output shaft of the valve electric actuator; establishing an output shaft model of the valve electric actuator; establishing a load force model; adding a displacement sensor, and establishing a displacement sensor mathematical model of the valve electric actuator; and controlling a valve electric actuator system by employing the active disturbance rejection control algorithm according to a transfer function of the valve electric actuator. According to the method, the valve electric actuator is controlled by employing the active disturbance rejection control algorithm, the system can realize decoupling and weaken the dependence on the model by the algorithm, and the anti-interference capability of the system is improved.
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Description

technical field

[0001] The invention relates to the technical field of valve electric actuator control, in particular to a valve electric actuator control method based on an active disturbance rejection control algorithm. Background technique

[0002] The early valve electric actuators received external valve opening or closing signals, and drove the valves to open or close through motors and reduction mechanisms. At present, more and more valve electric actuators are equipped with intelligent controllers, which can communicate with external devices in various forms to drive the valve to open or close, and at the same time control the valve to reach the specified position according to the external given position command. Location. With the continuous development of industrial control system technology and the continuous improvement of electrical automation level, valve electric actuators have become an irreplaceable link. Due to the restriction of the overall development l...

Claims

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