Anti-disturbance controller with double position loop feedback for feeding system

A dual position loop feedback and feed system technology, applied in the field of anti-disturbance controllers with dual position loop feedback, can solve the problems of control parameter debugging, dependence on the precise model of the system, difficulties, etc., and achieve improved control performance and high anti-interference ability , the effect of high control bandwidth

Inactive Publication Date: 2014-11-26
RES INST OF XIAN JIAOTONG UNIV & SUZHOU +1
View PDF5 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the cascade control does not depend on the mathematical model of the system at all, the control bandwidth is limited by the first-order resonance frequency of the feed system, the control effect is poor, and it is not practical for high-speed and high-precision control of the feed system
In response to this problem, scholars at home and abroad have proposed advanced control methods...

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
  • Anti-disturbance controller with double position loop feedback for feeding system
  • Anti-disturbance controller with double position loop feedback for feeding system
  • Anti-disturbance controller with double position loop feedback for feeding system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034]figure 1 Firstly, the general composition of the anti-disturbance controller for the dual position loop feedback of the feed system is given, and a dual position feedback control architecture different from the traditional position loop and speed loop control methods of the feed system is adopted: the inner loop uses the angular position of the motor as the equivalent linear position signal x M_list As a feedback signal to reduce the influence of differential inaccuracy, noise amplification and filter delay, the outer loop passes the load position signal x L_list The feedback realizes the closed-loop control of the whole system. This controller has a load position controller 1, a motor position controller 3, a load position state observer 2, and a motor position state observer 4, where:

[0035] The motor position state observer 4 utilizes the input motor control variable u and the equivalent linear position x of the motor through the reduced-order linear extended state...

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 anti-disturbance controller with double position loop feedback for a feeding system. The anti-disturbance controller is mainly used for high-speed and high-precision control over the feeding system. The double position loop feedback, namely the motor rotating angle position thetaM_list feedback and the load position xL_list feedback, is adopted in the controller. Two loops for the feedback are respectively provided with a position controller and a state observer. The state observers assess the total disturbance of the feeding system online in real time and conduct compensation so as to obtain the high anti-disturbance capability. On the basis of compensating for the total disturbance in real time, errors of input signals and feedback measurement signals and differential design linear feedback rates of the input signals and the feedback measurement signals are used to obtain high control bandwidths. In addition, the control performance of the controller can be further improved through speed and acceleration feedforward. Thus, the anti-disturbance controller has the high control bandwidth, the high anti-disturbance capability and the high robustness and further has the advantages of being simple in algorithm, clear in control parameter physical significance, easy to debug and the like.

Description

technical field [0001] The invention relates to an anti-disturbance controller for dual-position loop feedback of a feed system, in particular to an anti-disturbance controller for dual-position loop feedback mainly used for high-speed and high-precision control of a feed system. Background technique [0002] In today's society, precision and ultra-precision machining technology has become an important part of modern machinery manufacturing. CNC machine tool is an important tool in mechanical manufacturing, and its accuracy index is an important factor affecting the machining accuracy of workpieces. As the main component of the CNC machine tool, the feed system's following performance and anti-interference ability have seriously affected the machining accuracy of the CNC machine tool. [0003] Most feed systems now use the transmission mode of motor + coupling + screw nut + workbench. The limited stiffness of the coupling, lead screw nut and support bearings results in a l...

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): G05B19/18
Inventor 陈耀龙张承勇
Owner RES INST OF XIAN JIAOTONG UNIV & SUZHOU
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