Anti-interference PID (proportion integration differentiation) controller for unstable time-lag process and design method thereof

A controller and stable time technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve harmful and unfavorable actual production problems

Inactive Publication Date: 2014-03-12
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the process of control system design, often only focus on the setting value tracking performance and ignore or reduce the suppression of disturbance requirements, which is very unfavorable and harmful to actual production

Method used

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  • Anti-interference PID (proportion integration differentiation) controller for unstable time-lag process and design method thereof
  • Anti-interference PID (proportion integration differentiation) controller for unstable time-lag process and design method thereof
  • Anti-interference PID (proportion integration differentiation) controller for unstable time-lag process and design method thereof

Examples

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Embodiment 1

[0058] Embodiment 1: An anti-jamming PID controller of an industrial unstable time-delay process, which is followed by a set value tracking controller , disturbance rejection controller ,filter , Controlled process identification model P(s)=P 0 (s)e -θs and three signal mixers, the first of which is set in the setpoint controller At the input terminal, it has a positive polarity input terminal and a negative polarity input terminal, and its output is connected to the set value tracking controller input; the second signal mixer is set at the setpoint tracking controller It has a positive input and a negative input, and its output is connected to the actual controlled process input, the third signal mixer is set in the actual controlled process At the output terminal, it has a positive polarity input terminal and a negative polarity input terminal, and its output terminal is connected to the disturbance rejection controller input terminal. The external setpoint ...

Embodiment 2

[0094] Example 2: Investigate Liu T and Zhang w D, in the document Analytical design of two-degree-of-freedom control scheme for open-loop unstable processes with time delay. (Journal of Process Control, 2005, 15(5):559 -572) a chemically unstable time-delay process studied in

[0095] P ( s ) = 1 s ( s - 1 ) e - 0.2 s

[0096] For the above unstable time-delay process, in the literature, Liu T and Zhang w D proposed a two-degree-of-freedom control structure, using a robust The optimal control performance index is designed to obtain the given value tracking controller and the disturbance suppression controller as C ′ ( ...

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PUM

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Abstract

The invention relates to an anti-interference PID (proportion integration differentiation) controller for an industrial unstable time-lag process and a design method thereof. The controller consists of a set value tracking controller, a disturbance resisting controller, a filter, a controlled process identifying model and three signal mixers. The design method of the anti-interference PID controller for the industrial unstable time-lag process provided by the invention can improve the anti-interference capability of a system to a great extent, and compared with the other design methods, the control system is simple in structure, the controller is standard in form, industrial realization is easy, respective performance is adjusted through one-parameter, the operation is convenient and visual, the controlling effect is stable, and better system performance can be realized. The industrial control system can be widely used for controlling the production process of various enterprises in the industries, such as energy, metallurgy, petrifaction, light industry, medicine and textile manufacturing.

Description

technical field [0001] The invention relates to an anti-jamming PID controller design method for an industrial unstable time-delay process. It is a new type of design method aimed at the unstable time-delay object in the industrial process, based on the internal model control theory and the direct synthesis method. The control structure and analytical controller design method can respectively optimize and adjust the tracking performance and disturbance suppression performance index of the control system through single parameter, and belong to the technical field of industrial process control. Background technique [0002] The control of unstable processes has always been a difficult problem in the control field, mainly due to the great limitations brought about by the unstable dynamic characteristics of unstable objects and the poles of the right half plane, and the unstable process is very sensitive to load disturbance. Sensitive, it is easy to cause fluctuations in the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 尹成强高洁穆以东
Owner LIAOCHENG UNIV
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