Bundled piezoelectric motors combine several actuators to achieve high output power. However, mutual interference between the actuators leads to reduction in working efficiency. This work presents an adaptive stator that can reduce the mutual interference in bundled piezowalk motors. The stator consists of leaf springs for improving motor contact condition and proof masses that serve as an inertial body for maintaining high output force. Parameters of the proof masses and leaf springs are analyzed, and the working zone of the stator is discussed. A prototype of a linear motor with the designed adaptive stator is fabricated and tested. The maximum speed of a six-leg motor is 103 mm/s, and the stall force is approximately 1.2 N, driven with sinusoidal waveforms of 25Vpp at 30 kHz. Mutual interference between actuators is reduced remarkably with the adaptive stator. A comparison of six- and four-leg motors proves that motor performance has a linear relationship with the number of actuators, thereby indicating the potential of increasing output capability with additional actuators.
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April 2019
Research Article|
April 22 2019
Design of an adaptive stator for bundled piezo-walk motors
Jing Jing Chang;
Jing Jing Chang
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China
, Hefei, Anhui 230026, People’s Republic of China
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Xin Xin Liao;
Xin Xin Liao
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China
, Hefei, Anhui 230026, People’s Republic of China
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Yan Ning Zhou;
Yan Ning Zhou
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China
, Hefei, Anhui 230026, People’s Republic of China
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Zhi Hua Feng
Zhi Hua Feng
a)
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China
, Hefei, Anhui 230026, People’s Republic of China
a)Author to whom correspondence should be addressed: [email protected]. Tel.: +86 551 63607894. Fax: +86 551 63607894.
Search for other works by this author on:
a)Author to whom correspondence should be addressed: [email protected]. Tel.: +86 551 63607894. Fax: +86 551 63607894.
Rev. Sci. Instrum. 90, 045004 (2019)
Article history
Received:
December 25 2018
Accepted:
March 30 2019
Citation
Jing Jing Chang, Xin Xin Liao, Yan Ning Zhou, Zhi Hua Feng; Design of an adaptive stator for bundled piezo-walk motors. Rev. Sci. Instrum. 1 April 2019; 90 (4): 045004. https://doi.org/10.1063/1.5086923
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