Study of Motion Synchronization for Dual-path Electro-hydraulic Control Systems Based on Computer Visual Feedback

Author

Li, Chao ; Li, Yunhua ; Yang, Liman

Author_Institution

Sch. of Autom. Sci. & Electr. Eng., BeiHang Univ., Beijing

fYear

2006

fDate

Dec. 2006

Firstpage

1

Lastpage

6

Abstract

The paper develops a new measurement system based on computer visual feedback and adopts the nonlinear control method for measuring and controlling the synchronization error of dual-cylinder-group electro-hydraulic system in the pushing railway bridge machinery. According to theory of computer visual feedback, a new kind of model of measurement system and the algorithm of transformation of coordinates is proposed to detect the bridge´s position and attitude with the adoption of CCD sensors and image-processing on real-time. A kind of dual-loop controller is designed by modifying conventional PID controller. The simulation results verify the effectiveness of the conclusions

Keywords

bridges (structures); computerised instrumentation; control system synthesis; electrohydraulic control equipment; feedback; image motion analysis; machinery; measurement systems; nonlinear control systems; structural engineering computing; synchronisation; three-term control; CCD sensors; PID controller; bridge attitude detection; bridge position detection; computer visual feedback; dual-cylinder-group electro-hydraulic system; dual-loop controller design; dual-path electro-hydraulic control systems; measurement system; motion synchronization; nonlinear control; pushing railway bridge machinery; real-time image processing; synchronization error control; synchronization error measurement; Computer errors; Control systems; Coordinate measuring machines; Error correction; Feedback; Machinery; Motion control; Nonlinear control systems; Position measurement; Structural panels; Electrohydraulic control; computer visual feedback; image processing; motion synchronization; nonlinear control;

fLanguage

English

Publisher

ieee

Conference_Titel

Robotics, Automation and Mechatronics, 2006 IEEE Conference on

Conference_Location

Bangkok

Print_ISBN

1-4244-0024-4

Electronic_ISBN

1-4244-0025-2

Type

conf

DOI

10.1109/RAMECH.2006.252741

Filename

4018857