Direct-current motor finite time control method and system based on inhomogeneous Markov model

A Markov model, DC motor technology, applied in the field of power electronics, can solve problems such as poor control effect, and achieve the effect of improving stability

Inactive Publication Date: 2018-11-13
GUANGDONG UNIV OF TECH
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing technology, there has not been a technology that can solve the control effect of DC motors under the influence of adverse factors such as complex and harsh environments within a limited time.

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
  • Direct-current motor finite time control method and system based on inhomogeneous Markov model
  • Direct-current motor finite time control method and system based on inhomogeneous Markov model
  • Direct-current motor finite time control method and system based on inhomogeneous Markov model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0065] Please refer to figure 1 , a finite-time control method for a DC motor based on a non-homogeneous Markov model, including the following steps:

[0066] S1. Collect the operating parameters of the DC motor under various working conditions, wherein the parameters include the current, voltage, torque, angular velocity, viscous friction and inertial load of the DC motor;

[0067] S2. According to the operating parameters, establish the mapping relationship between the DC motor operating condition jump and the non-homogeneous Markov chain;

[0068] S3. Based on the mapping relationship, construct the state equation of the DC motor system based on the non-homogeneous Markov model, and the controller based on the full-dimensional observer;

[0069] S4. Construct an augmented closed-loop system equation that includes the DC motor system state and the observer state;

[0070] S5. According to the state equation of the DC motor system, determine the finite-time stability and bo...

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 direct-current motor finite time control method based on an inhomogeneous Markov model. The method includes following steps: collecting running parameters of a direct-currentmotor in various working conditions; according to the running parameters, establishing a mapping relation between direct-current motor working condition jumping and an inhomogeneous Markov chain; onthe basis of the mapping relation, establishing a direct-current motor system state equation based on the inhomogeneous Markov model and building a controller based on a full-dimensional observer; establishing an augmentation closed-loop system equation containing direct-current motor system state and observer state; according to the direct-current motor system state equation, determining a criterion judging that the direct-current motor is stable and bounded in finite time; utilizing a LMI toolkit in MATLAB to solve upper bound when an augmentation closed-loop system meets the criterion; outputting the upper bound with bounded finite time of the augmentation closed-loop system. By the method, stability of the direct-current motor can be improved effectively, control effect worsening of the direct-current motor under impact of adverse factors like complex and severe environment can be prevented, and stable running of the direct-current motor is ensured.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a finite-time control method and system for a DC motor based on a non-homogeneous Markov model. Background technique [0002] In practical engineering applications, the DC motor may have sudden changes in parameters or structure due to some factors (such as component wear, harsh environment, load changes, etc.), resulting in poor control effect of the controller, or even out of control. Therefore, there is an urgent need Research new DC motor control methods. [0003] Dynamic systems in which DC motors exhibit sudden changes in parameters or structure have received great attention in the past few decades. As a method that can effectively characterize such dynamic systems, Markovian jump systems have gained extensive research interest in both practical and theoretical fields. So far, many fundamental studies have been done on the control and filtering problems of Marko...

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 Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 鲁仁全高晓斌李鸿一张斌周琪
Owner GUANGDONG UNIV OF 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