Design and implementation of a smart electro-hydraulic converter

Wei-Bo Lee; Jun Ye; Wen-Kui Wang; Jian-Guo Lou

doi:10.1117/12.664789

2 May 2006 Design and implementation of a smart electro-hydraulic converter

Wei-Bo Lee, Jun Ye, Wen-Kui Wang, Jian-Guo Lou

Proceedings Volume 6042, ICMIT 2005: Control Systems and Robotics; 60423Z (2006) https://doi.org/10.1117/12.664789
Event: ICMIT 2005: Merchatronics, MEMS, and Smart Materials, 2005, Chongqing, China

Abstract

The development of a fieldbus based electro-hydraulic converter with functions of non-sensor fault self-diagnostic, fault prediction, fault-tolerant and fault self-removing is described. Non-sensor fault self-diagnostic and fault prediction were implemented through the detection of an oscillation current. The current was selected as the criterion of jam fault. Redundancy construction was adopted to realize the fault-tolerant function. Also, the switching principle of the redundancy construction was discussed. A concept of "electrical hammer" was presented to resolve the jam fault on-line automatically. A CEBus based powerline communication network was developed to fulfill the communication demands of field devices which are normally interconnected by "low voltage" wiring. The effectiveness of the proposed converter was demonstrated through simulations and experiments. It was concluded that the converter has a promising future in engineering applications, especially in turbine governing systems that suffer from jam fault.

Citation Download Citation

Wei-Bo Lee, Jun Ye, Wen-Kui Wang, and Jian-Guo Lou "Design and implementation of a smart electro-hydraulic converter", Proc. SPIE 6042, ICMIT 2005: Control Systems and Robotics, 60423Z (2 May 2006); https://doi.org/10.1117/12.664789

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