Sliding-mode observer optimization method and system

A technology of sliding mode observer and optimization method, which is applied in general control systems, control/regulation systems, instruments, etc., can solve problems such as chattering phenomenon and increase observation errors of sliding mode observers

Active Publication Date: 2016-02-17
INSPUR BEIJING ELECTRONICS INFORMATION IND
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Problems solved by technology

[0003] However, in the process of practical application, the switching function of the sliding mode obs...

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  • Sliding-mode observer optimization method and system
  • Sliding-mode observer optimization method and system
  • Sliding-mode observer optimization method and system

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[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] The embodiment of the present invention discloses a sliding mode observer optimization method, see figure 1 As shown, the method includes:

[0044] Step S11: Construct the state space of the sliding mode observer according to the motor parameters; wherein, the type of the above sliding mode observer is a power approach rate type, and the above state space includes the switching function of the above sliding mode observer;

[0045] Step S12: Using the p...

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Abstract

The invention discloses a sliding-mode observer optimization method and system. The method includes the steps of constructing a state space of a sliding-mode observer according to motor parameters, wherein the sliding-mode observer is of a power tendency rate type, and the state space includes a switching function of the sliding-mode observer; constructing a first function used for reflecting the robustness of the sliding-mode observer with the power of the power items in the switching function as a variable, and constructing a second function used for reflecting the observation error of the sliding-mode observer; conducting linear superposition on the first function and the second function, and obtaining a target function with the power as the variable; conducting optimization on the target function through a one-dimensional optimization method, and determining a correspondingly-obtained optimized value as the optimal value of the power. In the sliding-mode observer optimization method and system, the optimization is conducted on the target function through the one-dimensional optimization method, and therefore the corresponding optimized value is obtained, the observation error of the sliding-mode observer can be reduced, and meanwhile it is ensured that the sliding-mode observer has enough robustness.

Description

technical field [0001] The invention relates to the technical field of sliding mode control, in particular to a method and system for optimizing a sliding mode observer. Background technique [0002] The sliding mode observer is a state observer designed using the principle of sliding mode control, which has the advantages of simple structure, strong robustness and good dynamic response characteristics. [0003] However, in the process of practical application, the switching function of the sliding mode observer will cause chattering phenomenon, thereby increasing the observation error of the sliding mode observer. [0004] In summary, it can be seen that how to reduce the observation error of the sliding mode observer and ensure that the sliding mode observer has sufficient robustness is a problem to be solved at present. Contents of the invention [0005] In view of this, the object of the present invention is to provide a sliding mode observer optimization method and s...

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/04
Inventor 李磊
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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