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Study on the New Piezoelectric Linear Actuator

(received March 3, 1997)Cheng Lianglun; Yang Yimin(Robottes Institute, Guangdong University of Science and Technology, Guangzhou 510090)  
A new piezoelectric linear actuator is proposed in this paper, which has the feature of integrating piezoelectric element (PZT), circular notched level and biparallelogram multiple amplifier in a body. The result of computer simulation of the system model is introduced. By the exact model matching method corrector system, the dynamic and static properties of the control system is improved. And by optimizing transfer function method, the optimizing system gets the complete performance index. Experiment results show that the linear actuator driving range is 400μm, the maximum driving force is 50N, the controlled accuracy is less than 0. 5μm, the BW is 100Hi, and the operating frequency is 50Hz, The features of the linear actuator are large drive force, ultrahigh accuracy, and quick respond. The line actuator can be widely used in the procession direct drive of NC machine tool, robot, etc.
【Fund】: 国家自然科学基金
【CateGory Index】: TM38
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