Tinghai Cheng

Chinese Academy of Sciences

Dr. Tinghai Cheng received a B.S., M.S., and Ph.D. from Harbin Institute of Technology, China, in 2006, 2008, and 2013, respectively. He was a visiting scholar in the School of Materials Science and Engineering, Georgia Institute of Technology, USA, under the supervision of Prof. Zhong Lin Wang from 2017 to 2018. Currently, he is a professor at the Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, and Changchun University of Technology. As the first or corresponding author/co-author, Dr. Cheng has to date published seventy-three SCI academic articles. He also has thirty-six patents and eleven software copyrights to his credit.

1books edited

2chapters authored

Latest work with IntechOpen by Tinghai Cheng

With the rapid development of modern science and technology, great progress has been made in many high-tech fields such as aerospace engineering, ultra-precision machining and assembly, biomedical engineering, precision optical engineering, and micro-electromechanical systems. Since the developmental trajectory of modern high-tech fields is towards high precision and miniaturization, precision driving technology with micro-nano-level positioning accuracy is a key supporting technology. Piezoelectric driving technology has gradually become the main implementation method of micro-nano driving technology due to its high precision, fast response, strong anti-electromagnetic interference, and adaptability under extreme conditions. This book summarizes the latest progress in precision piezoelectric actuators.

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Piezoelectric Actuators

Edited by Tinghai Cheng

Chapters authored

The Asymmetric Flexure Hinge Structures and the Hybrid Excitation Methods for Piezoelectric Stick-Slip Actuators

By Tinghai Cheng, Xiaosong Zhang, Xiaohui Lu, Hengyu Li, Qi Gao and Guangda Qiao

Piezoelectric stick–slip actuators have become viable candidates for precise positioning and precise metering due to simple structure and long stroke. To improve the performances of the piezoelectric stick–slip actuators, our team deeply studies the actuators from both structural designs and driving methods. In terms of structural designs, the trapezoid-type, asymmetrical flexure hinges and mode conversion piezoelectric stick–slip actuators are proposed to improve the velocity and load based on the asymmetric structure; besides, a piezoelectric stick–slip actuator with a coupled asymmetrical flexure hinge mechanism is also developed to achieve the bidirectional motion. In terms of driving methods, a non-resonant mode smooth driving method (SDM) based on ultrasonic friction reduction is first proposed to restrain the backward motion during the rapid contraction stage. Then, a resonant mode SDM is further developed to improve the output performance of the piezoelectric stick–slip actuator. On this basis, the low voltage and symmetry of the SDM are also discussed. Finally, the direction-guidance hybrid method (DGHM) excitation method is presented to achieve superior performance, especially for high speed.

Part of the book: Piezoelectric Actuators

Introductory Chapter: Piezoelectric Actuators

By Tinghai Cheng and Jianping Li

Part of the book: Piezoelectric Actuators

Tinghai Cheng

Latest work with IntechOpen by Tinghai Cheng

Piezoelectric Actuators

Chapters authored

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