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

Speed ​​Estimation Method of Sliding Mode Observer for Asynchronous Motor Based on Immune Algorithm

A technology of sliding mode observer and asynchronous motor, which is applied in the direction of control of generator, motor generator control, control of electromechanical brake, etc., and can solve problems such as steady-state error and chattering

Inactive Publication Date: 2017-09-22
XIAN UNIV OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an asynchronous motor sliding mode observer speed estimation method based on the immune algorithm, which solves the problem of chattering caused by steady-state errors in the prior art, and improves the robustness to system parameters and external disturbances sex

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
  • Speed ​​Estimation Method of Sliding Mode Observer for Asynchronous Motor Based on Immune Algorithm
  • Speed ​​Estimation Method of Sliding Mode Observer for Asynchronous Motor Based on Immune Algorithm
  • Speed ​​Estimation Method of Sliding Mode Observer for Asynchronous Motor Based on Immune Algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0060] The speed estimation method of asynchronous motor sliding mode observer based on immune algorithm, the structural block diagram of sliding mode observer speed estimation based on immune algorithm is as follows figure 1 As shown, it includes the current calculation module, the flux linkage calculation module, the sliding mode function, and the speed estimation module. The input is the stator current and the stator voltage, and the output is the motor speed. The specific working process is as follows:

[0061] Step 1. Establish the mathematical model of the asynchronous motor through the stator current equation and the rotor flux equation of the asynchronous motor:

[0062]

[0063]

[0064] Among them, L r , L s , L m are rotor inductance, stator inductance and mutual inductance between stator and rotor, R r , R s are rotor r...

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 method for estimating the rotational speed of an asynchronous motor sliding mode observer based on an immune algorithm, which is specifically implemented according to the following steps: step 1, establishing a mathematical model of an asynchronous motor through the stator current equation of the asynchronous motor and the rotor flux equation; step 2, according to step 1 Select the sliding mode function for the mathematical model of the asynchronous motor established in ; step 3, estimate the rotational speed of the asynchronous motor through the sliding mode function obtained in step 2. In the present invention, by replacing the sliding mode coefficient γo of the sliding mode observer of the asynchronous motor with the parameters adjusted by the immune algorithm, the online adjustment of the rotational speed of the asynchronous motor is realized, and finally the vibration caused by the introduction of the sliding mode observer of the asynchronous motor is reduced It improves the robustness to system parameters and external disturbances.

Description

technical field [0001] The invention belongs to the technical field of asynchronous motor control, and in particular relates to a method for estimating a rotational speed of an asynchronous motor sliding mode observer based on an immune algorithm. Background technique [0002] In the field of modern motor control technology, asynchronous motor vector control technology has been widely used. Since the use of the speed sensor destroys the advantages of simple structure, reliability, low cost and convenient maintenance of the asynchronous motor, it also limits its application range and reduces the robustness of the system. Therefore, the speed sensorless control has not only become a modern AC drive control It is an important research direction of technology, and it is also a key technology for researching high-performance general-purpose frequency converters. At present, researchers have proposed many implementation methods, such as Luenberger observer method, model reference...

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): H02P21/05H02P21/18H02P21/13
Inventor 伍文俊赵有乾尹忠刚钟彦儒
Owner XIAN 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