A Simplified Motion Isolated Load Control for Multi-Channel Syncro-Loading System
Harbin Institute of Technology, Institute of Electro-hydraulic Servo Simulation Test System, 92 West Dazhi Street, Harbin China.
For the multi-channel syncro-loading (MCSL) test, the specimen may be driven by a particular motion of another position channel, representing an in-service duty cycle. The loading accuracy is largely affected by the specimen motion. To reduce the cross coupling from the motion, the cross coupling characteristics between multi-channels is analyzed, and a simplified motion isolation load control (MILC) algorithm is provided, in which the velocity and acceleration of the specimen, measured by the accelerometer, are added into the forward path of the loading control channel in order to drive the actuator to match the motion of the specimen. The test results indicate that the MILC algorithm can significantly improve the loading accuracy compared with the conventional loading control method.
© The Authors, published by EDP Sciences, 2016
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