A Friction Modeling Method for Electromechanical Systems and Its Application

A technology of electromechanical system and modeling method, which is applied in the direction of general control system, control/regulation system, electrical program control, etc., can solve the problems of low positioning accuracy and large following error, achieve fast identification speed, improve accuracy, and improve The effect of positioning accuracy

Active Publication Date: 2022-07-05
HUAZHONG UNIV OF SCI & TECH
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a friction modeling method and its application of the electromechanical system, thereby solving the problem of low positioning accuracy during low-speed motion and following error during high-speed motion in the existing electromechanical system larger technical issues

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
  • A Friction Modeling Method for Electromechanical Systems and Its Application
  • A Friction Modeling Method for Electromechanical Systems and Its Application
  • A Friction Modeling Method for Electromechanical Systems and Its Application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] like figure 1 As shown, a friction modeling method for an electromechanical system, including:

[0038] Set the speed threshold, when the speed of the electromechanical system is between the speed zero point and the speed threshold, linearly fit the friction force of the electromechanical system to obtain the friction model of the low speed section;

[0039] When the speed of the electromec...

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 a friction force modeling method of an electromechanical system and an application thereof, belonging to the field of dynamic analysis of electromechanical systems. The frictional force of the electromechanical system is linearly fitted to obtain the friction model of the low-speed section; when the speed of the electromechanical system is greater than the speed threshold, the frictional force of the electromechanical system is nonlinearly fitted to obtain the frictional model of the high-speed section. Aiming at the situation that the direction and magnitude of the friction force at the zero speed of the electromechanical system are uncertain, the present invention sets a speed threshold, and performs linear fitting between the speed zero and the threshold. The friction attenuation coefficient is nonlinearly fitted to the high-speed section, and the friction model is improved to improve the positioning accuracy of the electromechanical system.

Description

technical field [0001] The invention belongs to the field of dynamic analysis of electromechanical systems, and more particularly relates to a frictional force modeling method of electromechanical systems and applications thereof. Background technique [0002] Friction is a complex nonlinear physical phenomenon that arises between contacting interfaces with relative motion. For centuries, the phenomenon of friction has attracted many scholars to conduct in-depth and systematic research on it. In engineering practice, people use friction to work, such as automobile tires, clutches, and brake pads. However, for precision mechanical systems such as robots and CNC machine tools, the existence of friction causes unfavorable factors such as stick-slip motion, limit cycle oscillation and tracking error. With the increasing requirements for the positioning accuracy of mechanical systems, how to eliminate the influence of friction to the greatest extent has become a challenging task...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/416
CPCG05B19/4163G05B2219/36521Y02T90/00
Inventor 杨建中黄德海李昌俊段继航
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap