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Fuzzy control method and temperature control system using same

A fuzzy control and fuzzy technology, applied in control/regulation system, temperature control, non-electric variable control, etc., can solve the problems of poor adaptability to working conditions and achieve effective control

Inactive Publication Date: 2021-07-23
JIANGSU HENGLI FURNACE IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to solve the problem of poor adaptability to working conditions of the traditional PID control method, the present invention provides a fuzzy control method to solve the above problems

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  • Fuzzy control method and temperature control system using same
  • Fuzzy control method and temperature control system using same
  • Fuzzy control method and temperature control system using same

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Embodiment Construction

[0050] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0051] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description,...

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Abstract

The invention provides a fuzzy control method which comprises the following steps: S1, setting a basic domain of discourse and a fuzzy control table, and determining a preset numerical value and a gain initial value; S2, calculating an error and an error change rate; S3, obtaining an error fuzzy value and an error change rate fuzzy value; S4, querying a fuzzy control table to obtain a fuzzy gain control quantity associated with the error fuzzy value and the error change rate fuzzy value; S5, calculating a gain value according to the fuzzy gain control quantity, the gain initial value and the basic discourse domain; and S6, calculating an output value according to the gain value. The fuzzy control method does not depend on a mathematical model of a controlled object, determines the size of a control quantity according to a preset fuzzy control table made based on a manual control rule, converts a human-controlled natural language into an algorithm language which can be accepted by a computer by utilizing a fuzzy set theory, simulates a thinking mode of a human, and effective control of some controlled objects which cannot construct accurate mathematical models is realized.

Description

technical field [0001] The invention relates to the field of industrial intelligent control, in particular to a fuzzy control method and a temperature control system applied thereto. Background technique [0002] Industrial furnace is a heating equipment widely used in heat treatment production, and it occupies a very important position in the production of machinery, metallurgy and other industries. Traditional boiler combustion control mostly adopts pure PID control method. However, pure PID control method often encounters complex working conditions with large lag, time variation, and nonlinearity, which leads to unknown parameters and slow parameter changes in the control process. , parameter lag, parameter interference and the inability to obtain accurate mathematical models, etc., have poor adaptability to operating conditions. Contents of the invention [0003] The technical problem to be solved by the present invention is: in order to solve the problem of poor adap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/20
CPCG05D23/20
Inventor 祝琦
Owner JIANGSU HENGLI FURNACE IND