title: An ultrasonic contact-type position restoration mechanism.
abstract: An ultrasonic contact-type position restoration mechanism is proposed and investigated in this paper. In the mechanism, two driving points of an ultrasonic vibrator, excited by an AC voltage, produces a restoring force on a slider so that the slider can be pushed back to its equilibrium after it is perturbed away from its equilibrium. The restoring force is generated by the unbalance of ultrasonic frictional driving forces on the slider, which is caused by a pressure difference on the two driving points. A prototype of this mechanism is fabricated, and the effects of the driving voltage, preload between the slider and vibrator, and slider's size on the restoring characteristics are experimentally measured and analyzed.
authors.affiliation: State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Lu
authors.affiliation: State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Junhui
authors.initials: J
authors.lastname: Hu
authors.affiliation: Department of Electrical and Electronics Engineering, ITER, Siksha 'O' Anusandhan University, Bhubaneswar 751030, India.
authors.forename: Satyanarayan
authors.initials: S
authors.lastname: Bhuyan
authors.affiliation: Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Shiyang
authors.initials: S
authors.lastname: Li