Novel Traveling Wave Sandwich Piezoelectric Transducer with Single Phase Drive: Theoretical Modeling, Experimental Validation, and Application Investigation

Chinese Journal of Mechanical Engineering

Jens Twiefel¹  Fushi Bai²  Viktor Hofmann³  Jiamei Jin⁴  Liang Wang⁵ 

[1] Institute of Dynamics and Vibration Research, Leibniz University Hannover, 30167, Hannover, Germany;Institute of Dynamics and Vibration Research, Leibniz University Hannover, 30167, Hannover, Germany;School of Marine Science and Technology, Northwestern Polytechnical University, 710072, Xi’an, Shaanxi, China;School of Marine Science and Technology, Northwestern Polytechnical University, 710072, Xi’an, Shaanxi, China;State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, 210016, Nanjing, China;State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, 210016, Nanjing, China;Institute of Dynamics and Vibration Research, Leibniz University Hannover, 30167, Hannover, Germany;

关键词: Traveling wave;    Sandwich piezoelectric transducer;    Single phase excitation;    Transfer matrix method;    Ultrasonic motor;   

DOI  :  10.1186/s10033-021-00623-x

来源: Springer

【 摘 要 】

Most of traditional traveling wave piezoelectric transducers are driven by two phase different excitation signals, leading to a complex control system and seriously limiting their applications in industry. To overcome these issues, a novel traveling wave sandwich piezoelectric transducer with a single-phase drive is proposed in this study. Traveling waves are produced in two driving rings of the transducer while the longitudinal vibration is excited in its sandwich composite beam, due to the coupling property of the combined structure. This results in the production of elliptical motions in the two driving rings to achieve the drive function. An analytical model is firstly developed using the transfer matrix method to analyze the dynamic behavior of the proposed transducer. Its vibration characteristics are measured and compared with computational results to validate the effectiveness of the proposed analytical model. Besides, the driving concept of the transducer is investigated by computing the motion trajectory of surface points of the driving ring and the quality of traveling wave of the driving ring. Additionally, application example investigations on the driving effect of the proposed transducer are carried out by constructing and assembling a tracked mobile system. Experimental results indicated that 1) the assembled tracked mobile system moved in the driving frequency of 19410 Hz corresponding to its maximum mean velocity through frequency sensitivity experiments; 2) motion characteristic and traction performance measurements of the system prototype presented its maximum mean velocity with 59 mm/s and its maximum stalling traction force with 1.65 N, at the excitation voltage of 500 VRMS. These experimental results demonstrate the feasibility of the proposed traveling wave sandwich piezoelectric transducer.

【 授权许可】

CC BY