Direct-driven XY table profile control method based on predictive control and cross coupling

A cross-coupling and predictive control technology, applied in digital control, electrical program control, etc., can solve problems such as PID lag, poor robustness, and increased control difficulty

Inactive Publication Date: 2013-01-02
SHENYANG POLYTECHNIC UNIV
View PDF2 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although the PID (proportional-integral-derivative) controller widely used in linear motors can improve the control accuracy of the motor to a certain extent, however, with the increasing accuracy requirements in the development of industry, PID due to its existence It is difficult to meet its requirements due to the shortcomings of hysteresis and poor robustness. In addition, there are two-axis couplings in the XY platform, which makes the control more difficult.

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-driven XY table profile control method based on predictive control and cross coupling
  • Direct-driven XY table profile control method based on predictive control and cross coupling
  • Direct-driven XY table profile control method based on predictive control and cross coupling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0075] The structural block diagram of this embodiment is as follows figure 1 As shown, including: signal collector 1, position setter 2, predictive controller 3,

[0076] A cross-coupling controller 4 and a driver 5, wherein the cross-coupling controller 4 includes a contour error estimator 4-1 and a contour error compensator 4-2.

[0077] In this embodiment, the XY platform servo mechanism is used as the experimental equipment, the motor driver is set in the torque mode, and a system transfer function between an input command and an output position is first obtained by using system identification. Based on this transfer function, external disturbances and internal uncertainties are regarded as system disturbances, and the error caused by disturbances is compensated by a predictive controller in a single axis, and the response speed is improved through...

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 provides a direct-driven XY table profile control method based on predictive control and cross coupling, and belongs to the technical field of automatic control. The device comprises a signal collector, a position setter, a predicating controller, a cross coupling controller and a driving device, wherein the cross coupling controller comprises a profile error estimating device and a profile error compensating device. The direct-driven XY table profile control device and method based on predictive control and cross coupling are provided by the invention according to the characteristics of a direct-driven XY platform; the predicating controller is adopted to control a single shaft, so that the tracking error in the system can be reduced, and the precision in positioning of double shafts can be indirectly improved; and the cross coupling controller is adopted on the dual-shaft for decoupling, so that the profile error of the system can be directly compensated, and the precision in processing can be improved.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a direct-drive XY platform contour control method based on predictive control and cross-coupling. Background technique [0002] Numerical control technology is an important strategic material for national defense modernization, and an important basic industry that is related to the country's strategic position and reflects the level of the country's comprehensive national strength. Vigorously developing the advanced manufacturing industry with numerical control technology as the core has become an important way for most countries to accelerate economic development, improve comprehensive national strength and national status. High-speed high-precision, synchronous control and multi-axis coordinated control are important research directions of CNC technology at present. In the machining process of CNC machine tools, the CNC machining center (CNC) is required ...

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): G05B19/19
Inventor 赵希梅孙显峰王丽梅孙宜标姜明明
Owner SHENYANG POLYTECHNIC UNIV
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