Vibration intelligent control parameter optimization method and system for piezoelectric laminated beam

Abstract

The invention discloses a vibration intelligent control parameter optimization method and system for a piezoelectric laminated beam, and the method comprises the following steps: S1, uniformly pasting piezoelectric ceramic pieces on the upper and lower surfaces of a piezoelectric laminated beam plate, analyzing a unit mass matrix and a stiffness matrix of the beam plate through a finite element method, and building a beam plate electromechanical coupling model; s2, analyzing the dynamic characteristics of a piezoelectric laminated beam plate according to the electromechanical coupling model of the beam plate, and optimizing a piezoelectric actuator through an improved particle swarm algorithm to control the vibration parameters of the corresponding beam plate; and S3, establishing a hysteresis model through a hysteresis compensation algorithm based on the optimization parameters of the piezoelectric actuator, optimizing the vibration parameters of the piezoelectric actuator, determining the position vector of the piezoelectric actuator, preventing the control overflow of an active controller, improving the vibration control effect, and realizing the linearization of actual input and actual output. The system compensation error can be accurately described, and the control precision in the active control system is improved.

Description

technical field [0001] The invention relates to the technical field of functionally graded piezoelectric materials, in particular to a method and system for optimizing vibration intelligent control parameters of a piezoelectric laminated beam. Background technique [0002] With the continuous progress of science and technology, lightweight and flexible intelligent structures have been widely used in different fields. Due to the low damping and low stiffness of the flexible structure itself, it is easy to generate low-frequency vibration and slow vibration attenuation when subjected to external disturbances. It will adversely affect the high-precision operation scene, and the vibration will cause structural fatigue damage and shorten the service life. How to solve the vibration problem of the piezoelectric laminated beam structure has attracted great attention. [0003] At present, the optimization method of vibration intelligent control parameters for piezoelectric laminated...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a vibration intelligent control parameter optimization method and system for piezoelectric laminated beams, so as to solve the problem of excitation or collection of uncontrolled mode due to improper selection of piezoelectric actuators in the prior art. state response, leading to control overflow, poor control effect, and the input-output relationship of the hysteresis compensation system is not clear, and it is impossible to accurately describe the technical problems of the system compensation error, etc.

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