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A Control Method of Neutral System Based on Interval Type 2 t-s Model

An interval-type, control method technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., to achieve the effect of accurate system description, wide application range and effective control method

Inactive Publication Date: 2021-11-30
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the literature on the combination of neutral type system and interval type 2 T-S model is still blank.

Method used

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  • A Control Method of Neutral System Based on Interval Type 2 t-s Model
  • A Control Method of Neutral System Based on Interval Type 2 t-s Model
  • A Control Method of Neutral System Based on Interval Type 2 t-s Model

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Embodiment

[0230] Embodiment: The present invention is mainly aimed at controlling the refining process of chemical reactors in petroleum refineries. The proposed control method is clear in thinking, reasonable in structure, and easy to implement in engineering. Consider the following mathematical model of a chemical reactor in a petroleum refinery:

[0231]

[0232]

[0233] Where t is time (unit: min), x 1 ,x 2 Respectively, the deviation of the standard value of reactants A and B (unit: kg), δF A ,δF B Respectively, the deviation of the standard feeding speed of raw materials A and B (unit: kg / min), σV R Indicates the deviation of the mass of the chemical reactor (unit: kg), τ, h, r are delay times, and they are all fixed values ​​(unit: min), a i ,b i ,c i , d i ,e j (i=1,2,3,4; j=1,2) are known engineering parameters.

[0234] The process equation of chemical reactor in petroleum refinery is described by fuzzy rules as follows:

[0235] Rule 1: THEN

[0236]

...

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Abstract

The invention relates to a control method of a neutral system with distributed time-delay based on an interval-type T-S model. The present invention firstly determines the mathematical model of the chemical reactor of the petroleum refinery; secondly, converts the above mathematical model into the interval two-type T-S fuzzy model; then adopts the parallel distribution compensation method to design the T-S fuzzy controller; finally determines the interval two-type T ‑S Fuzzy system stability conditions, and transform into linear matrix inequalities, to find the control gain. The present invention uses the interval type 2 T-S model to describe the refining process of the chemical reactor of the petroleum refinery. The interval type 2 T-S fuzzy set has advantages over the type 1 fuzzy set in terms of processing system uncertainty, and at the same time, it is computationally complex. It is lower than the type II fuzzy set. Therefore, modeling the system using interval-type fuzzy set functions not only makes the system description more accurate, but also makes the control method more effective.

Description

technical field [0001] The invention belongs to the field of control science and control engineering, and relates to a control method of a neutral system with distributed time-delay based on an interval-type T-S model. Background technique [0002] The mathematical models proposed in the fields of engineering technology, physics, mechanics, cybernetics, chemical reactions, biomedicine, etc. all have obvious hysteresis. Especially in automatic control devices, for any system with feedback, there must be a time difference between the input signal and the receipt of the feedback signal. Therefore, using traditional differential equations to describe the state of the system is only an approximation, which must meet the accuracy requirements, otherwise it will lead to errors. With the development of high technology, the requirements for the control system in actual engineering are constantly increasing, including the precise modeling of the system and the precise design of the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/0275G05B13/042
Inventor 程启文周绍生贾祥磊付世州
Owner HANGZHOU DIANZI UNIV
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