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所属单位：能源与动力学院

发表刊物：Proc. - IEEE Int. Conf. Power Electron. Motion Control, PEMC

摘要：This paper proposes a new electro hydraulic proportional actuation scheme, in which a piezoelectric ring bender actuating a nozzle flapper valve is adopted to directly control a single-ended actuator. The piezoelectric ring bender is a less complex, lighter and more reliable alternative to a conventional torque motor. The nozzle flapper valve is used as the only hydraulic control component, rather than a first stage amplifier in traditional servovalves, which allows the whole actuation system to response faster. Due to the lack of flapper displacement feedback, the valve used here is a proportional valve instead of a servovalve in this actuation system. In order to evaluate the performance of the actuator, a system-level mathematical model was built, where the piezoelectric hysteresis effect and the position of the ring bender on the flapper are considered. An analytical solution was implemented by using Matlab/Simulink. Results show that the actuation system proposed in this paper exhibits fast response, good controllability and linearity. A virtual prototype of the actuator is designed to analyze the arrangement. This has potential for use in situations where min load, fast response and high reliability actuation are required. © 2018 IEEE.

是否译文：否

发表时间：2018-11-03

合写作者：Du, Yihao

通讯作者：王彬