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A PID controller parameter control method for objects in thermal process

A technology of parameter control and controller, applied to controllers with specific characteristics, electric controllers, etc., can solve problems such as difficulty in obtaining control effects, slow convergence speed, complicated programming language, etc., and achieve small overshoot and fast Controlled speed, wide-ranging effects

Active Publication Date: 2022-07-29
SOUTHEAST UNIV
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Problems solved by technology

[0003] However, the parameters of the traditional controller are adjusted through the experience accumulated in the thermal production process, and it is difficult to obtain a good control effect
However, the existing tuning methods such as genetic algorithm have slow calculation speed and complicated programming language; the search radius of particle swarm algorithm decreases in the later stage, resulting in slower convergence speed and longer calculation time

Method used

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  • A PID controller parameter control method for objects in thermal process
  • A PID controller parameter control method for objects in thermal process
  • A PID controller parameter control method for objects in thermal process

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Embodiment Construction

[0028] The technical solutions of the present invention will be further introduced below in conjunction with specific embodiments.

[0029] This specific embodiment discloses a PID controller parameter control method for an object in a thermal process, comprising the following steps:

[0030] S1: Establish a higher-order transfer function model of the object;

[0031] S2: Use the asymptote of the Nyquist curve of the open-loop transfer function to establish an equation to determine k in the PID controller parameters p , the integration time constant T i the relationship with the higher-order transfer function model parameters of the object;

[0032] S3: Determine the integral time constant T i The relationship between the order n of the higher-order transfer function model and the time constant T of the higher-order transfer function model;

[0033] S4: Determine the differential time constant T in the PID controller d with the integration time constant T i The relations...

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Abstract

The invention discloses a PID controller parameter control method for an object in a thermal process, comprising the following steps: S1: establishing a high-order transfer function model of the object; S2: establishing an equation by using the asymptote of the Nyquist curve of the open-loop transfer function, Determine the proportional gain k in the PID controller parameters p , the integration time constant T i The relationship with the higher-order transfer function model parameters of the object; S3: Determine the integration time constant T i The relationship between the order n of the higher-order transfer function model and the time constant T of the higher-order transfer function model; S4: Determine the differential time constant T in the PID controller d with the integration time constant T i The relationship between. The invention is simple, fast and has good setting effect.

Description

technical field [0001] The invention relates to a thermal process, in particular to a PID controller parameter control method of an object in the thermal process. Background technique [0002] PID control technology is a control technology with mature technology and widely used control strategies. So far, many complete control methods and typical structures have been accumulated. In addition, PID control technology can be applied not only to control systems whose mathematical models are known, but also to most industrial processes whose mathematical models are not determined. [0003] However, the traditional controller parameters are adjusted by the experience accumulated in the thermal production process, and it is difficult to obtain a good control effect. However, the existing tuning methods such as genetic algorithm have slow calculation speed and complicated programming language; the search radius of particle swarm optimization algorithm is reduced in the later stage,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 刘东川孙立陈祎璠赵聪凡马德宏
Owner SOUTHEAST UNIV
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