Title :
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
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;
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
DOI :
10.1109/RAMECH.2006.252741
