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Anti-disturbance pid controller for unstable time-delay process and its design method

A design method and controller technology, applied in the field of theory and direct synthesis, which can solve problems such as unfavorable and harmful actual production

Inactive Publication Date: 2016-09-28
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-disturbance pid controller for unstable time-delay process and its design method
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  • Anti-disturbance pid controller for unstable time-delay process and its design method

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Embodiment 1

[0059] Embodiment 1: An anti-jamming PID controller for an industrial unstable time-delay process, which tracks the controller K by the set value 1 (s), disturbance resistance controller K 2 (s), filter F(s), controlled process identification model P(s)=P 0 (s)e -θs and three signal mixers, the first of which is set at the setpoint controller K 1 At the input terminal of (s), it has a positive polarity input terminal and a negative polarity input terminal, and its output is connected to the set value tracking controller K 1 (s); the second signal mixer is set at the setpoint tracking controller K 1 (s) output terminal, it has one positive polarity input and one negative polarity input, its output is connected to the input terminal of the actual controlled process P(s), the third signal mixer is set in the actual controlled process P(s ), it has one positive input terminal and one negative input terminal, and its output terminal is connected to the disturbance rejection con...

Embodiment 2

[0096] Embodiment 2: Investigate Liu T and Zhang w D, in 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

[0097] P ( s ) = 1 s ( s - 1 ) e - 0.2 s

[0098] 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 the robust H 2 The optimal control performance index is designed to obtain the given value tracking controller and the disturbance suppression controller as

[0099] C ′ ...

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Abstract

The invention relates to a timely design method of an anti-jamming PID controller for an industrial unstable time-delay process. The controller is controlled by a set value tracking controller , disturbance rejection controller ,filter , Controlled process identification model and three signal mixers. The anti-interference PID controller design method of the industrial unstable time-delay process provided by the present invention greatly improves the anti-interference ability of the system. Compared with other design methods, the control system of the present invention has simple structure and standardized controller form , easy to implement in industry, each performance can be adjusted by a single parameter, the operation is simple and intuitive, the control effect is stable, and better system performance can be achieved. It can be widely used in the production process control of various enterprises in energy, metallurgy, petrochemical, light industry, medicine, textile and other industries.

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 Patents(China)
IPC IPC(8): G05B13/04
Inventor 尹成强高洁穆以东
Owner LIAOCHENG UNIV
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