title: Performance evaluation of dual-frequency driving plate ultrasonic motor based on an analytical model.
abstract: An analytical model is presented to explain the effects of dual-frequency drive on the plate ultrasonic motor in this paper. The experimental prototype is a plate ultrasonic motor using single-phase asymmetric excitation, which can work under a single vibration or multiple vibration modes. Based on the linear superposition of vibrations with two different excitation frequencies, an analytical model is established using the classic Coulomb friction model, and the non-load rotation speed and maximum stall torque are deduced. Moreover, some crucial parameters such as preload and dead-zone in dual-frequency superposition model are identified or modified automatically by searching for the maximum correlation coefficient between simulation and experimental data using single-frequency drive. It is found that simulation and experiment results agree well when no excitation frequency component is at resonance.
authors.affiliation: Shanghai Jiao Tong University, Instrument Science and Engineering, Shanghai, China.
authors.forename: Yafei
authors.initials: Y
authors.lastname: Pang
authors.forename: Ming
authors.initials: M
authors.lastname: Yang
authors.forename: Xuying
authors.initials: X
authors.lastname: Chen
authors.forename: Wei
authors.initials: W
authors.lastname: He
authors.forename: Shiyang
authors.initials: S
authors.lastname: Li
authors.forename: Chaodong
authors.initials: C
authors.lastname: Li