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Parameter self-setting method of MISO full format model-free controller based on deviation information

A parameter self-tuning, model-free technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the unrealized penalty factor, affect the control effect of MISO full-format model-free controller, and lack of effective tuning means and other issues to achieve a good control effect

Active Publication Date: 2018-06-01
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the MISO full-format model-free controller needs to rely on empirical knowledge to pre-set the penalty factor λ and the step size factor ρ before it is actually put into use. 1 ,…,ρ Ly+Lu and other parameters, the penalty factor λ and step size factor ρ have not yet been realized in the actual commissioning process 1 ,…,ρ Ly+Lu Online self-tuning of other parameters
The lack of effective parameter setting methods not only makes the debugging process of MISO full-format model-free controller time-consuming and laborious, but also sometimes seriously affects the control effect of MISO full-format model-free controller, which restricts the development of MISO full-format model-free controller. Promote application

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  • Parameter self-setting method of MISO full format model-free controller based on deviation information
  • Parameter self-setting method of MISO full format model-free controller based on deviation information
  • Parameter self-setting method of MISO full format model-free controller based on deviation information

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0049] figure 1 The principle block diagram of the present invention is given. For a MISO system with m inputs (m is an integer greater than or equal to 2) and 1 output, the MISO full-format model-free controller is used for control; the control output linearization length constant Ly of the MISO full-format model-free controller is determined , Ly is an integer greater than or equal to 1; determine the control input linearization length constant Lu of the MISO full-format model-free controller, Lu is an integer greater than or equal to 1; the parameters of the MISO full-format model-free controller include penalty factor λ and step Long factor ρ 1 ,…,ρ Ly+Lu ; Determine the MISO full-format model-free controller to be tuned parameters, which are part or all of the MISO full-format model-free controller parameters, including penalty factor λ...

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Abstract

The invention discloses a parameter self-setting method of a MISO full format model-free controller based on deviation information. The parameter self-setting method includes the steps of using deviation information as the input of a BP neural network, the BP neural network performing forward calculation and outputting a penalty factor, a step factor and other to-be-set parameters of an MISO fullformat no-model controller through an output layer, calculating to obtain a control input vector for a controlled object by adopting a control algorithm of the MISO full format no-model controller, conducting system error reverse propagation calculation for gradient information sets of all the to-be-set parameters by using a gradient descent method in combination with control output with minimization of the value of a system error function as a target, on-line updating the hidden layer weight coefficient of the BP neural network in real time, outputting the layer weight coefficient, and realizing the self-setting of parameters based on the deviation information. The parameter self-setting method can effectively overcome the online setting difficulty of the parameters of a controller, and agood control effect on an MISO system is achieved.

Description

technical field [0001] The invention belongs to the field of automatic control, and in particular relates to a parameter self-tuning method of a MISO full-format model-free controller based on partial derivative information. Background technique [0002] The control problem of MISO (Multiple Input and Single Output) system has always been one of the major challenges in the field of automation control. [0003] Existing implementations of MISO controllers include MISO full-format model-free controllers. MISO full-format model-free controller is a new type of data-driven control method that does not rely on any mathematical model information of the controlled object, but only relies on the input and output data measured by the MISO controlled object in real time for controller analysis and design, and The realization is simple, the calculation burden is small and the robustness is strong, and the unknown nonlinear time-varying MISO system can also be well controlled, and has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/02
CPCG05B13/024
Inventor 卢建刚李雪园
Owner ZHEJIANG UNIV
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