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

Inertia identification and load torque observation-based speed loop response improvement method

A technology of load torque and speed loop, applied in the field of servo motor, can solve problems such as reducing the bandwidth of the speed loop, and achieve the effect of improving the speed control performance

Inactive Publication Date: 2017-03-22
DORNA TECH
View PDF10 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The speed signal obtained in this way is limited by the precision of the mechanical sensor on the one hand, and on the other hand, the phase delay caused by the low-pass filter will reduce the bandwidth of the speed loop.

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
  • Inertia identification and load torque observation-based speed loop response improvement method
  • Inertia identification and load torque observation-based speed loop response improvement method
  • Inertia identification and load torque observation-based speed loop response improvement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0061] A speed loop response improvement method based on inertia identification and load torque observation according to the present invention includes:

[0062] 1. Off-line estimation of servo system moment of inertia based on least square method fitting

[0063] Using the motion information of motor constant torque (constant torque current) acceleration and free braking (zero torque current), the moment of inertia of the servo system can be obtained by least squares fitting.

[0064] Suppose the moment of inertia, dynamic friction coefficient, static friction torque and constant acceleration torque of the system are J, B, T f , T e , then there are:

[0065] The motion equation of the motor in the acceleration phase under constant torque driv...

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 inertia identification and load torque observation-based speed loop response improvement method. A motion curve is fit by adopting motion information of constant-torque acceleration and free deceleration of a motor through a least square method to obtain rotational inertia and friction information of a servo system offline. A theoretical parameter setting value of a speed PI adjuster can be obtained on the basis of rotational inertia information obtained through offline identification according to a speed closed-loop transfer function optimization theory, so that blind adjustment of a PI parameter when the rotational inertia of a system is unknown is avoided, and the PI parameter is finally adjusted by combining the practice to set a driver to the optimal performance.

Description

technical field [0001] The invention relates to the field of servo motors, in particular to a speed loop response improvement method based on inertia identification and load torque observation. Background technique [0002] With the development of power electronics technology, permanent magnet synchronous motors have played an important role in CNC machine tools, industrial robots, aerospace and other fields. The application of permanent magnet synchronous motors in high-end occasions is becoming more and more extensive, and there are higher requirements for its speed dynamic performance, stability and other aspects. [0003] The servo system widely adopts the PID-based control strategy, and the appropriateness of the PID control parameter setting directly affects the performance of the servo. In order to ensure good servo performance, the control parameters must be properly adjusted according to the actual working state of the servo system. Improper parameter setting will ...

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): H02P21/00H02P21/13H02P21/18
CPCH02P21/0003H02P21/13
Inventor 唐波吕春松彭亮其他发明人请求不公开姓名
Owner DORNA 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