Alternating current servo system model distinguishing method and control system based on frequency data

A technology of AC servo and system model, applied in general control system, digital control, program control, etc., can solve the problems of not considering the influence of system control performance, modeling and model parameter identification of un-delayed links, data noise interference, etc.

Inactive Publication Date: 2019-04-16
HUAZHONG UNIV OF SCI & TECH
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) The above literatures seldom focus on the delay link existing in the actual system, and do not model the delay link and identify the model parameters;
[0006] (3) These methods do not consider the impact of system data disturbance o

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
  • Alternating current servo system model distinguishing method and control system based on frequency data
  • Alternating current servo system model distinguishing method and control system based on frequency data
  • Alternating current servo system model distinguishing method and control system based on frequency data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0075] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, 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 constitute a conflict with each other.

[0076] To achieve the above object, the present invention proposes an AC servo system model identification method based on frequency data, comprising the following steps:

[0077] Step 1: Establish the AC servo system model to be identified:

[0078] Based on the speed loop control structure of the AC servo system, the following frequency model considering the delay link is used to approximate ...

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 alternating current servo system model distinguishing method and a control system based on frequency data, and belongs to the field of alternating current servo system control. The method comprises the following steps that: establishing an alternating current servo system model to be distinguished, obtaining the frequency response data of the system by an excitation system so as to construct a model distinguishing target criterion function, and according to an amplitude value and phase position equal condition, utilizing a set residual error to finish the optimization distinguishing of an optimal model parameter in an iteration domain. By use of the weighting iteration model distinguishing method and the control system based on the frequency data, the determination of a system model structure and the distinguishing of the model parameter under distributed frequency data are realized, in addition, a time delay link in a practical system is simultaneously considered, and a following residual error kurtosis coefficient and a weighting iteration algorithm are used for guaranteeing model parameter update optimization.

Description

technical field [0001] The invention belongs to the field of AC servo system control, and more specifically relates to a weighted iterative model identification method for an AC servo system based on frequency data. Background technique [0002] For AC servo systems with characteristics of nonlinearity, strong coupling, and time-varying parameters, the control performance is not only related to the engineering manufacturing level of related hardware, but also depends on the motion control method used in the system. At present, the intelligent control algorithm used in the AC servo system can improve the dynamic response performance and stability of the AC servo system, but its smooth implementation and application depend on the accurate identification of the AC system model. [0003] The model identification of the AC servo system excites the system and collects the response data of the controlled object, so as to determine the model structure of the system and identify the ...

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): G05B19/19
CPCG05B19/19G05B2219/35349
Inventor 谢远龙王书亭刘伦洪罗年猛张捷蒋立泉孟杰赵伟
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