WEN Jian-ming MA Ji-jie ZENG Ping ZHANG ZHong-hua KAN Jun-wu CHENG Guang-ming. Machining and functional testing of piezoelectric rotary actuator[J]. Editorial Office of Optics and Precision Engineering, 2013,21(1): 131-136
A new piezoelectric inertial rotary actuator with piezoelectric stack as the power converter is proposed based on controlling the normal pressure to regulate the friction which hinders the movement of the actuator. Prototype and motion mechanism of this actuator characterized by two symmetric piezoelectric stacks are presented. Motion performance test of the prototype demonstrates that the actuator is excellent in A new piezoelectric inertial rotary actuator by taking piezoelectric stacks as the power converters was proposed based on controlling the normal pressure to regulate the frictional force. By arranging two piezoelectric stacks symmetrically
the structure of the piezoelectric rotary actuator was designed
and its motion mechanism was explored. A prototype of piezoelectric rotary actuator was developed and the experimental test on the actuator was performed. Experimental results show that the actuator is excellent in linearity of output step and its rotation step is 20 rad when the square wave is 10 V and the frequency is 2 Hz. The stability of the actuator was analyzed and an extra control system was added to overcome the shortcoming in the step stability at different start points. The error sources were obtained by analysis on the test data
which provides references for further optimization of the actuator. Research in this paper proves the feasibility of the design method for piezoelectric rotary actuators. It can be used in design of piezoelectric rotary actuators with simple structures
small volumes for micro-driving applications.
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