Adaptive order fractional order fuzzy PI lambda controller method

A fractional-order fuzzy and fuzzy controller technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problem of unable to control the dynamic adjustment parameters of the system

Inactive Publication Date: 2016-10-12
XIAN UNIV OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide an adaptive order fractional fuzzy PI λ controller approach that solve

Method used

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  • Adaptive order fractional order fuzzy PI lambda controller method
  • Adaptive order fractional order fuzzy PI lambda controller method
  • Adaptive order fractional order fuzzy PI lambda controller method

Examples

Experimental program
Comparison scheme
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Embodiment

[0082] The voltage outer loop transfer function of the PWM rectifier is:

[0083] G p ( s ) = K 1 - T v s 1 + T i s

[0084] The value of each parameter is:

[0085] T i = 0.5 R L C = 0.495 T v = LP ...

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Abstract

The invention discloses an adaptive order fractional order fuzzy PI lambda controller method. The method specifically includes the following steps that 1, three control parameters of a fractional order PI lambda controller are determined aiming at controlled object GP; 2, a fuzzy rule and a subordinating degree function are set up based on the fuzzy set theory, and a set-up fuzzy controller is added into the fractional order PI lambda controller and used for correcting the parameters; 3, the fractional order controller corrected by the fuzzy controller is connected into a control system, the fuzzy controller corrects the parameters of the PI lambda controller in real time according to input, and a needed control effect is achieved. The adaptive order fractional order fuzzy PI lambda controller method is high in response speed and small in overshoot, and has good robustness for disturbance.

Description

technical field [0001] The invention belongs to the technical field of automatic control principles, in particular to an adaptive order fractional fuzzy PI λ controller method. Background technique [0002] PI controller, full name proportional integral controller, is widely used in industrial control, but its ability to deal with bad working conditions is limited. In recent years, most researches have focused on improvement. [0003] Fractional calculus can be considered as an extension of classical integer calculus, but it has its own unique logic and grammatical rules. Commonly used fractional calculus definitions are: Riemann-Liouville (RL) definition, Grunwald-Letnikov (GL) definition and Caputo definition. Extending the PI controller from integer order to fractional order can significantly improve the degree of freedom of the controller and better control the controlled system. [0004] A control method using the basic idea and theory of fuzzy mathematics. In the t...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/04
Inventor 杨宁宁韩宇超李萌萌贾嵘田录林
Owner XIAN UNIV OF TECH
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