Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Improved Gauss pseudo-spectral method-based piezoelectric ceramic driver optimum displacement control method

A technology of Gaussian pseudospectral method and piezoelectric ceramics, applied in the field of optimal displacement control of piezoelectric ceramic actuators based on improved Gaussian pseudospectral method

Inactive Publication Date: 2019-05-10
GUANGDONG UNIV OF TECH
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the electromechanical coupling nonlinear dynamic system model of the piezoelectric ceramic actuator, there is no efficient and stable optimal control method to solve its control

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Improved Gauss pseudo-spectral method-based piezoelectric ceramic driver optimum displacement control method
  • Improved Gauss pseudo-spectral method-based piezoelectric ceramic driver optimum displacement control method
  • Improved Gauss pseudo-spectral method-based piezoelectric ceramic driver optimum displacement control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0076] The present invention will be further described below in conjunction with specific embodiment:

[0077] Such as figure 1 As shown, a method for optimal displacement control of a piezoelectric ceramic driver based on the improved Gaussian pseudospectral method described in this embodiment includes the following steps:

[0078] S1: Use the electromechanical coupling nonlinear dynamical system model to mathematically model the piezoelectric ceramic driver, and obtain the model of the piezoelectric ceramic driver, as follows:

[0079] The performance index function is:

[0080]

[0081] The constraints are:

[0082]

[0083] in,

[0084]

[0085]

[0086]

[0087] Q and R represent the weight matrix, is the derivative of X, X is the state variable, x is the actual output displacement, for speed, is the acceleration, u is the control variable, x des is the expected displacement, b is the damping coefficient, k is the spring stiffness, m is the equiva...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an improved Gauss pseudo-spectral method-based piezoelectric ceramic driver optimum displacement control method. Aiming at influences, on a system of a piezoelectric ceramic driver, of hysteresis linearity of a piezoelectric ceramic driver, control solution is carried out by using an improved Gauss pseudo-spectral method under an electromechanical coupling nonlinear power system model of the piezoelectric ceramic driver, so that a numerical solution of a state variable is obtained; and a Gauss node is changed through judging whether an absolute value of a difference between the numerical value of the state variable and an expected displacement satisfies a practical industrial allowable error or not by combining a requirement of the practical industrial allowable error, so that an optimum displacement with higher precision is obtained. According to the method, the influences, on systems of piezoelectric ceramic drivers are decreased, high-precision numerical solutions are obtained under electromechanical coupling nonlinear power system models of the piezoelectric ceramic drivers, and the positioning precision of the piezoelectric ceramic drivers is improved.

Description

technical field [0001] The invention relates to the technical field of piezoelectric ceramic driver control, in particular to a piezoelectric ceramic driver optimal displacement control method based on an improved Gaussian pseudo-spectrum method. Background technique [0002] With the in-depth development of high-tech fields, human beings have higher requirements for industrial levels, and the scientific research objects have developed from the macroscopic field to the microscopic field. In high-precision operations such as ultra-precision machining and precision measurement, precision at the micron or even nanometer level is required. Micro-nano technology occupies an increasingly important position in the field of construction machinery. [0003] Piezoelectric ceramic driver is a micro / nano-scale ultra-precision positioning device made of piezoelectric inverse piezoelectric effect. It has the advantages of high displacement resolution, fast response, no noise, small size, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G05B13/04
Inventor 麦恒陈学松
Owner GUANGDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com