Abstract：In order to meet the requirement of large stroke and high precision angular displacement, a giant magnetostrictive rotary actuator was designed based on the principle of Inchworm movement. The flexure hinge was simplified to statically indeterminate beams, and the equivalent stiffness of that was determined. The stiffness was simulated and verified by the finite element method. The simulated value and calculated value were consistent, and the maximum relative error of them was 1.78%.The modal analysis and strength check were carried out. According to the voltage law, magnetoresistance theory, linear piezomagnetic model and dynamic theory, the angular displacement model was established, and the experimental system was built for experimental testing. From the results of calculation and experiment, the established angular displacement model can accurately reflect the angular displacement output of the rotary actuator in the range of operating voltage and frequency, the maximum error was 8.55μrad and the maximum relative error was 4.52%. The minimum and maximum one-step angular displacements were 111.93μrad and 351.71μrad. The output of angular displacement was stable, and the maximum relative error was 4.83%.
周景涛，何忠波，柏果，刘国平. 基于柔性铰链的超磁致伸缩旋转驱动器角位移分析[J]. 振动与冲击, 2020, 39(18): 138-144.
ZHOU Jingtao，HE Zhongbo，BAI Guo，LIU Guoping. Angular displacement output of a giant magnetostrictive rotary actuator based on a flexible hinge. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(18): 138-144.
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