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A Separation Implementation Method of PID Controller

An implementation method and controller technology, which are applied in the field of separation implementation of PID controllers

Active Publication Date: 2016-07-13
RENMIN UNIVERSITY OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This has brought unprecedented opportunities and challenges to find a controller with a simple structure and easy engineering implementation.

Method used

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  • A Separation Implementation Method of PID Controller
  • A Separation Implementation Method of PID Controller
  • A Separation Implementation Method of PID Controller

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Embodiment Construction

[0045] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0046] In the existing control methods using PID, it is usually necessary to solve problems such as model identification and parameter tuning. When parameter tuning, it is often necessary to consider the selection of design parameters such as the coefficient of the proportional term, the coefficient of the integral term, and the coefficient of the derivative term. , due to the lack of effective theoretical basis in the face of system uncertainty and disturbance, there are technical difficulties in the parameter setting of the controller. For example, in the implementation of fuzzy PID, the selection of relevant design parameters needs to be determined by "look-up table" with the help of certain rules, which not only has a limited scope of application, but also needs to be based on rich experience. For the above problems, such as figure 1 As shown, th...

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Abstract

The present invention relates to a separate implementation method of a PID controller, which includes: for the control problem of a controlled object that can be based on a PID controller, divide the control input into an input part based on integral u I (t) and the input part u based on the ratio and derivative PD (t), dynamically adjust the integral-based input part u by introducing a variable I In the form of (t), the uncertain components and external disturbances in the PID-based control system are separated from the control system; for the system composed of the remaining parts without uncertain components and disturbances, the input part based on proportion and derivative is selected u PD (t) and determine the input part u based on the ratio and derivative PD The coefficients of the proportional term and the derivative term in (t) realize the stable control of the remaining part of the system about the origin; by reasonably selecting u I (t) and u PD (t) form and design parameters to realize the tracking control of the controlled object. The PID controller obtained by the invention has a simple structure and is convenient for engineering realization. The invention can be widely used in the control of industrial processes.

Description

technical field [0001] The invention relates to a realization method of a PID (proportional proportion, integral integral, derivative derivative) controller, in particular to a separate realization method of a PID controller. Background technique [0002] PID controller (hereinafter referred to as "PID") and its improved type are the most common controllers in process control. PID is the control implementation method with the longest history and the strongest vitality. It is the most widely used and has achieved great results. This is closely related to the essence of PID: robustness, optimized structure and intelligent features. A key issue in PID design is to adjust the parameters of the controller so that the control system can achieve the desired control performance. Among them, the research on PID includes the following aspects: optimal parameter setting of PID, optimal structure of PID formula, self-adaptive PID, and advanced control system design based on PID. Howe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
Inventor 王伟
Owner RENMIN UNIVERSITY OF CHINA
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