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Fuzzy PID control method, device and system

A technology of fuzzy control and fuzzy algorithm, applied in the field of control, can solve problems such as poor control performance, and achieve the effect of improving control performance

Active Publication Date: 2016-09-21
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Abstract
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Problems solved by technology

[0009] The main purpose of the present invention is to provide a kind of fuzzy PID control method and device and system, to solve the problem of poor control performance of the fuzzy PID control method in the related art

Method used

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  • Fuzzy PID control method, device and system
  • Fuzzy PID control method, device and system

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Embodiment Construction

[0031] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0032] In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only The embodiments are part of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

[0033] It sho...

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Abstract

The invention discloses a fuzzy PID control method, device and system. The method comprises the steps: calculating a PID control parameter through a first preset algorithm; calculating a fuzzy algorithm parameter through a second preset algorithm, wherein the fuzzy algorithm parameter is used for calculating a fuzzy control parameter, and the first preset algorithm or the second preset algorithm is a single-variable distribution estimation algorithm; obtaining the output quantity and target quantity of a controlled object, wherein the controlled object is a control object of a fuzzy PID controller, and the target quantity of the controlled object is a preset target output quantity of the controlled object; determining the control parameter of the controlled object according to the output quantity and target quantity of the controlled object, the PID control parameter and the fuzzy algorithm parameter; and inputting a determined control parameter to the controlled object. According to the invention, the method solves a problem that the control performance of a fuzzy PID control method in the related technologies is poorer.

Description

technical field [0001] The present invention relates to the field of control, in particular, to a fuzzy PID control method, device and system. Background technique [0002] Fuzzy PID control method is a classic control method in control science. The fuzzy PID control method controls the controlled quantity through the fuzzy PID controller. The input quantity of the fuzzy PID controller is the difference between the controlled quantity and the target quantity. The controller adjusts the control parameters of the fuzzy PID controller through the change of the input quantity, so as to achieve the purpose of making the controlled quantity of the fuzzy PID controller follow the target quantity. However, the existing fuzzy PID control methods still have certain drawbacks, and the control performance of the controlled variable with large lag is poor. [0003] For example, when controlling the temperature and pressure of the main steam of a thermal power plant with a large lag, the...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/04
Inventor 王天堃黄波波彭大天
Owner CHNA ENERGY INVESTMENT CORP LTD
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