Five-order active disturbance rejection control method for continuous rotary motor electro-hydraulic servo system
An electro-hydraulic servo system, active disturbance rejection control technology, applied in the direction of adaptive control, general control system, control/adjustment system, etc., can solve the problem of high-order active disturbance rejection control without obvious improvement of control accuracy and frequency response There are too many parameters to be tuned, and the performance of the motor cannot be satisfied, so as to improve tracking accuracy and response frequency, save computing time, and achieve good control performance.
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[0023] With reference to the drawings, the control method of the present invention will be described in detail:
[0024] Such as figure 1 As shown, a structure diagram of a fifth-order active disturbance rejection control method for a continuous rotary motor electro-hydraulic servo system; the specific control process is: a given input signal v at time k 0 (k) Obtain v at k+1 time by tracking differentiator 1 (k+1), v 2 (k+1), v 3 (k+1), v 4 (k+1), v 5 (k+1), passing through and z at time k+1 of the extended state observer 1 (k+1), z 2 (k+1), z 3 (k+1), z 4 (k+1), z 5 (k+1) make difference, get error e 1 , E 2 , E 3 , E 4 , E 5 , As the input of the nonlinear error feedback control law, get the output u 0 , Through and z 6 The operation of (k+1) acts as a dynamic compensation on the controlled object to obtain f(z).
[0025] Such as figure 2 As shown, the thin solid line is the slope input signal with a slope of 0.001° / s, and the dotted line is the output corresponding curve control...
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