Parameter identification method for multi-nonlinear parameter coupling system and identification device thereof

Inactive Publication Date: 2017-05-31
XI AN JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

Therefore, in the identification process, the error of the identified parameters will reduce the identification accuracy of the subsequent parameters, that is, the transmission error

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  • Parameter identification method for multi-nonlinear parameter coupling system and identification device thereof
  • Parameter identification method for multi-nonlinear parameter coupling system and identification device thereof
  • Parameter identification method for multi-nonlinear parameter coupling system and identification device thereof

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Embodiment Construction

[0049] Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0050] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentioned throughout the spe...

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Abstract

The present invention discloses a parameter identification method for a multi-nonlinear parameter coupling system and an identification device thereof. The parameter identification method for the multi-nonlinear parameter coupling system obtains an estimated nonlinear parameter values, namely a nonlinear parameter identification value through processing such as the Fourier transform, the inverse Fourier transform, the equal division processing and acquaintance assessment, etc. The parameter identification method for the multi-nonlinear parameter coupling system and the identification device thereof can realize the simultaneous identification of all the nonlinear parameter values included by nonlinearity to be identified so as to fundamentally solve the problem that the parameter identification precision is low caused by the transferring errors generated in the parameter identification process of the multi-nonlinear parameter coupling system. The parameter identification method for the multi-nonlinear parameter coupling system and the identification device thereof does not restrict the system orders, the nonlinearity type, the nonlinearity position and the number of nonlinear parameters included in the nonlinearity and can realize the simultaneous identification of all the nonlinear parameters included by any nonlinearity at any position of a large-scale nonlinear system.

Description

technical field [0001] The invention belongs to the field of parameter identification of nonlinear systems, in particular to a parameter identification method and identification equipment for multi-nonlinear parameter coupling systems. Background technique [0002] In a mechanical system, due to the influence of geometry, inertia, damping, boundary conditions, constraints, and lubrication, the overall structure is often nonlinear, and is affected by factors such as wear, thermal effects, and local deformation during operation. , these nonlinear factors will continue to change. When these nonlinear factors exceed the reasonable range of the design, the wear between the components will be intensified, and harsh noise will be generated, which will seriously affect the motion accuracy and stability of the system, and then reduce the dynamic performance of the mechanical structure. Nonlinear parameter identification can help to understand the behavior of the system under the act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/04
Inventor 李兵刘杰张翔祝尚坤苗慧慧
Owner XI AN JIAOTONG UNIV
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