An Inertial Piezoelectric Hybrid Actuator With LargeAngular Velocity and High Resolution

2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO) Pub Date : 2018-08-01 DOI:10.1109/3M-NANO.2018.8552211

Huilu Bao, Jianming Wen, Jijie Ma, Jiajia Zheng, Kangshang Chen

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Abstract

An inertial piezoelectric actuator with large angular velocity and high resolution equipped with various combinations of asymmetrical clamping structures and a bias unit is presented. Two control types are constructed as types A and B. Simulation experiments are conducted to explore the angular displacement and velocity characteristics. The first-order natural frequency by simulation is 16.666 and 17.379 Hz for types A and B, respectively, which agrees with the experiment results of 13.828 and 14.141 Hz. Furthermore, for type A, compared with the characteristics of the actuator that has a sole asymmetrical clamping structure, angular velocity is improved to approximately 6.90 times from 18.88 mrad/s to 130.23 mrad/s at 50 V and 7 Hz. For type B, the resolution is enhanced to 2.85 times from 7.98 μrad to 2.80 μrad under a square signal of 20 V and 1 Hz and offset distance of −22 mm. Thus, type A can improve angular velocity and type B can enhance resolution.

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一种大角速度高分辨率惯性压电混合驱动器

提出了一种采用非对称夹紧结构和偏置单元的不同组合的大角速度高分辨率惯性压电驱动器。构建了A型和b型两种控制类型，进行了角位移和速度特性仿真实验。A型和B型的一阶固有频率分别为16.666和17.379 Hz，与实验结果13.828和14.141 Hz相吻合。此外，对于A型驱动器，与具有单一非对称夹紧结构的驱动器特性相比，在50 V和7 Hz下，角速度从18.88 mrad/s提高到130.23 mrad/s，提高了约6.90倍。对于B型，在20 V、1 Hz的平方信号和−22 mm的偏移距离下，分辨率从7.98 μrad提高到2.80 μrad，提高了2.85倍。因此，A型可以提高角速度，B型可以提高分辨率。

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2018 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)

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