Electromechanical servo system parameter identification method based on large-inertia friction load

An electromechanical servo system, friction load technology, applied in the field of aerospace servo, can solve the problems of non-linear current signal, large friction force, large inertia, etc., to achieve the effect of improving accuracy and reducing the influence of external interference

Inactive Publication Date: 2018-08-24
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The load of the servo system in the aerospace field is characterized by large inertia and high friction. The existing hydraulic servo system cannot meet the above requirements
The electrical and mechanical characteristics of the motor and th...

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
  • Electromechanical servo system parameter identification method based on large-inertia friction load
  • Electromechanical servo system parameter identification method based on large-inertia friction load
  • Electromechanical servo system parameter identification method based on large-inertia friction load

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The invention relates to a parameter identification method of an electromechanical servo system based on a large inertia friction load. First, in the running state of an empty motor, the initial mechanical motion equation is measured off-line by a deceleration method, and is used as a control parameter; then, in the running state of the motor with inertia , through the same deceleration method, the mechanical equation of motion with inertia is determined online, and the initial mechanical equation of motion and the mechanical equation of motion with inertia are used to obtain the motor rotor moment of inertia J and the coefficient of viscous friction B online m ; Wherein, the deceleration method is based on the method of measuring the moment of inertia of the motor through free deceleration without any electrical influence.

[0028] A reference coordinate system fixed with the rotor is used to describe and analyze the dynamic and static performance of the electromechanic...

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 relates to an electromechanical servo system parameter identification method based on large-inertia friction load. The method is characterized in that, to begin with, under a motor no-load operation state, determining an initial mechanical movement equation offline through a velocity reduction method, and serving the equation as controller parameters; and then, under a motor with-inertia operation state, determining a mechanical movement equation with inertia online through the same velocity reduction method, and calculating motor rotor rotational inertia J and viscous friction coefficient Bm online by utilizing the initial mechanical movement equation and the mechanical movement equation with inertia. The method can realize online identification, that is, the rotational inertia and the viscous friction coefficient of a motor rotor are calculated in real time during the system operation process, and the control strategy is adjusted according to characteristics in different time periods to allow the servo system to have excellent performance.

Description

technical field [0001] The invention relates to a parameter identification method of an electromechanical servo system based on a large inertia friction load, belonging to the field of aerospace servo. Background technique [0002] In the field of aerospace, low-power electromechanical servo systems have gradually replaced hydraulic servo systems, but high-power electromechanical servo systems are still dominated by hydraulic servo systems. The load of the servo system in the aerospace field is characterized by large inertia and high friction. The existing hydraulic servo system cannot meet the above requirements. The electrical and mechanical characteristics of the motor and the control method lead to a large degree of nonlinearity in its current signal, and it is impossible to accurately estimate the flux linkage of the permanent magnet. It is necessary to measure the moment of inertia of the motor by mechanical means. Contents of the invention [0003] (1) Technical pr...

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): H02P21/14H02P21/00
CPCH02P21/0017H02P21/14H02P21/143
Inventor 宋浩闫海媛朱大宾赵国平何雨枫尹业成
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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