PID control method with integral saturation and pretreatment functions

A control method and preprocessing technology, applied to controllers with specific characteristics, electric controllers, etc., can solve the contradiction between steady-state performance indicators and dynamic performance indicators. There is no obvious effect, lack of robustness in system conditions, control input Conditions lack of robustness and other problems, to achieve the effect of good steady-state characteristics and dynamic characteristics, good anti-interference ability, good application and verification

Inactive Publication Date: 2014-06-04
BEIJING UNION UNIVERSITY
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Problems solved by technology

[0011] The invention patent application number is 201210019001.1 and the name is "anti-saturation PID control method for motor speed control system". In view of the lack of robustness of the existing anti-saturation PID controller for different control input conditions, a method based on integral state prediction is proposed. The anti-saturation PID control method accumulates the results of proportional operation, integral oper

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  • PID control method with integral saturation and pretreatment functions
  • PID control method with integral saturation and pretreatment functions
  • PID control method with integral saturation and pretreatment functions

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[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments. The correspondence between constituent elements in the claims and specific examples in the embodiments can be exemplified as follows. The description herein is intended to confirm that specific examples used to support the subject matter stated in the claims are described in the embodiments, and since an example is described in the embodiments, it does not mean that the specific examples do not represent constituent elements. Conversely, even if a specific example is included here as an element characteristic corresponding to one constituent element, it does not mean that the specific example does not represent any other constituent element.

[0041] Furthermore, the description herein does not imply that all subject matter corresponding to specific examples set forth in the embodiments are recited in the claims. In other words, the d...

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Abstract

The invention provides a PID control method with the integral saturation and pretreatment functions. The PID control method analyzes the transient process of step response of a system and is provided according to an error between the set valve and the feedback quantity and a change rate of the controlled quantity; score accumulation values are treated differently according to the different conditions so that the integral saturation phenomenon can be thoroughly eliminated, and the good control effects of the steady-state characteristic and the dynamic characteristic of the system can be achieved; moreover, the good capacity of resisting disturbance is achieved.

Description

technical field [0001] The invention relates to the field of PID control of industrial control, more specifically, to a PID control method with integral saturation preprocessing function. Background technique [0002] The PID control method is the most widely used control law in process control. There are three coefficients in the PID control law: proportional coefficient k p , Integral coefficient K i and differential coefficient K d . The proportionality factor k p The function is to speed up the response speed of the system and improve the adjustment accuracy of the system: the proportional coefficient k p If it is too large, it is easy to produce overshoot; the proportional coefficient k p If it is too small, the adjustment accuracy will be reduced, and the response speed will be slowed down, thereby prolonging the adjustment time. Integral coefficient K i The function is to eliminate the static error of the system: the integral coefficient K i If it is too large...

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Application Information

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IPC IPC(8): G05B11/42
Inventor 钱琳琳张益农王德政
Owner BEIJING UNION UNIVERSITY
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