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Fuzzy Dynamic Integral Sliding Mode Control Method for Reentrant Industrial Manufacturing Systems

An industrial manufacturing and integral sliding mode technology, applied in the field of control science and engineering, can solve the problems of unbalanced loads of multiple production scenarios, difficult to suppress nonlinear characteristics and random noise, etc., to achieve suppression of nonlinear characteristics and random noise, fast smooth running effect

Active Publication Date: 2022-04-12
BEIHANG UNIV
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Problems solved by technology

[0005] In view of this, the present invention provides a fuzzy dynamic integral sliding mode control method for reentrant industrial manufacturing systems to solve the problem that it is difficult to suppress the nonlinear characteristics and random noises that are ubiquitous in actual industrial manufacturing systems, and it is impossible to balance multiple production scenarios. load problem

Method used

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  • Fuzzy Dynamic Integral Sliding Mode Control Method for Reentrant Industrial Manufacturing Systems
  • Fuzzy Dynamic Integral Sliding Mode Control Method for Reentrant Industrial Manufacturing Systems
  • Fuzzy Dynamic Integral Sliding Mode Control Method for Reentrant Industrial Manufacturing Systems

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Embodiment 1

[0173] First, consider the following evolution equations for reentrant industrial manufacturing systems involving 2 production scenarios:

[0174]

[0175]

[0176] in , r 1 ( x , t )and r 2 ( x , t ) are the product densities of the first and second production scenarios at each degree of completion and time, respectively, u ( x , t ) is the control input.

[0177] It can be seen that the equilibrium point of the above production scenario is r 1 ( x , t )= r 2 ( x , t )=5, u ( x , t )=0. Therefore, through the method proposed by the present invention, the following controlled variables are constructed

[0178] .

[0179] Using the modeling method of the continuous stochastic model of the control equation provided by the present invention, the evolution trend of the controlled variable can be obtained as follows:

[0180]

[0181] in,

[0182]

[0183]

[0184] is a 2-dimensional Wiener process.

[0185] The nonlinear function of t...

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Abstract

The invention relates to the field of control science and engineering technology, and provides a fuzzy dynamic integral sliding mode control method for reentrant industrial manufacturing systems. The method includes: establishing a continuous evolution equation of a reentrant industrial manufacturing system according to the system model; performing state transformation on the evolution equation to obtain the evolution form of the control equation; fuzzifying the control equation to obtain a random fuzzy model; For a given controller design process, use MATLAB‑LMI toolbox to calculate the integral sliding surface matrix and corresponding controller gain; based on the integral sliding surface matrix and corresponding controller gain, determine the target parameters so that it can be re-entered into the industrial manufacturing system for smooth operation. The present invention effectively suppresses nonlinear characteristics and random noises that are ubiquitous in actual industrial manufacturing systems, quickly balances loads among multiple production scenarios, and ensures that the manufacturing system can quickly realize stable operation.

Description

technical field [0001] The invention relates to the field of control science and engineering technology, in particular to a fuzzy dynamic integral sliding mode control method for reentrant industrial manufacturing systems. Background technique [0002] The reentrant industrial manufacturing system refers to the manufacturing system in which the workpieces at different processing stages in the processing process repeatedly enter some workstations due to the needs of special processing technology, and wait for processing in front of these workstations at the same time. [0003] Considering the complexity of the reentrant manufacturing system, many scholars at home and abroad propose to establish a continuous model to describe the operating characteristics of the system. However, the traditional method is very conservative when dealing with reentrant industrial manufacturing systems, ignoring the complexity of the industrial site, and has great limitations in practical applicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 高庆张春阳吕金虎
Owner BEIHANG UNIV
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