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Extended state space predictive function control based integral object control method

An extended state and space prediction technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problem of ineffective resistance to interference, and achieve the effect of anti-interference and multi-degree-of-freedom

Active Publication Date: 2017-01-18
ZHEJIANG BONYEAR TECH
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Problems solved by technology

[0003] The purpose of the present invention is to propose a new error correction idea to solve the problem that the traditional extended state space prediction function control cannot effectively resist interference when dealing with integral objects

Method used

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  • Extended state space predictive function control based integral object control method
  • Extended state space predictive function control based integral object control method
  • Extended state space predictive function control based integral object control method

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Embodiment Construction

[0059] The present invention will be further described below.

[0060] The present invention first establishes the transfer function model of the controlled integral object based on the step response data of the integral object, and digs out the basic object characteristics; then converts the transfer function model into a corresponding extended state space model; then adopts a new The predictive function control of the error correction method; finally, the obtained control quantity is applied to the controlled integral object.

[0061] The steps of the method of the present invention include:

[0062] Step (1). Establish its transfer function model according to the step response data of the controlled integral object, specifically as follows:

[0063] Ⅰ. Give a step signal to the input terminal of the controlled integration object, and record the output change response curve of the integration object.

[0064] Ⅱ. Filter the obtained step response curve, and then fit it into a...

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Abstract

The invention discloses an extended state space predictive function control based integral object control method which comprises the following steps: 1) establishing a transfer function model according to the step response data of a controlled integral object; 2) transforming the transfer function model into an extended state space model; and 3) designing a predictive function controller based on the extended state space model. The invention can effectively resist the interference in the integral object through the means of data acquisition, model establishment, model conversion, prediction and error correction; and the expanded state space model also provides more freedom for the design of a controller, therefore, further promoting the application of the extended state space predictive function control.

Description

technical field [0001] The invention belongs to the field of automatic control and relates to an integral object control method based on extended state space prediction function control. Background technique [0002] Integral objects widely exist in actual industrial processes, such as rectification column liquid level, boiler drum water level, storage tank liquid level and so on. In the control of this type of object, if the controller has integral characteristics inside, when the controlled object is disturbed, the entire controlled system will be in the state of integral oversaturation, which will cause the controlled system to reach a value different from the set value. steady state. Compared with the traditional state-space model predictive control, the extended state-space predictive function control has more design freedom and better comprehensive performance, but it has integral characteristics inside. If the controller can be corrected to resist the influence of th...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 吴胜刘小蒙陈天明欧丹林
Owner ZHEJIANG BONYEAR TECH
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