Title :
A vision based low-frequency electro-hydraulic fatigue testing machine
Author :
Wong, Ray-Hwa ; Li, Min-Siou ; Wang, Ying T.
Author_Institution :
Dept. of Mech. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
In the vision based control system, the lower frame per second and the delay of image processes are main reasons to degrade the control performance. These factors have no significant influence in the low frequency material testing. In experiments, vision based electro-hydraulic material testing machine is developed by self-organizing sliding mode fuzzy controller and to carry out dynamic tracking control under 1Hz. Square, sinusoidal and triangular waveforms are applied to analyze the control performance of this electro hydraulic testing machine, and then it will discuss the feasibility of non-contacted CCD camera to replace contacted sensors.
Keywords :
CCD image sensors; electrohydraulic control equipment; fatigue testing; fuzzy control; image processing equipment; test equipment; variable structure systems; dynamic tracking control; frequency 1 Hz; image processing delay; low frequency material testing; noncontacted CCD camera; self-organizing sliding mode fuzzy controller; sinusoidal waveform; triangular waveform; vision based control system; vision based low-frequency electrohydraulic fatigue testing machine; Cameras; Charge coupled devices; Delay; Frequency control; Measurement uncertainty; Steady-state; Time factors;
Conference_Titel :
Microsystems, Packaging, Assembly and Circuits Technology Conference (IMPACT), 2011 6th International
Conference_Location :
Taipei
Print_ISBN :
978-1-4577-1387-3
Electronic_ISBN :
2150-5934
DOI :
10.1109/IMPACT.2011.6117273
