Multi-motor configuration of multi-DOF (degree of freedom) optical system is a major source
of redundant structure, putting a limitation on the simple and miniaturized design. Thus, a …

A surface contact model of ring type traveling wave ultrasonic motors is proposed in this
paper in order to describe the circular three-dimensional contact and friction problem …

Flexible rotors are widely used in traveling wave rotary ultrasonic motors (TRUMs) because
of their higher energy conversion efficiency; however, there have been few reports on how …

In this paper, a novel model for evaluating the temperature of traveling-wave ultrasonic
motor (TWUSM) is developed. The proposed model, where the interaction between the …

To evaluate the response and output performance of an assembled and complete ultrasonic
motor, a 3D finite element model has been proposed by a commercial finite element …

Current traveling wave ultrasonic motor (TWUSM) utilizes comb-teeth structure as deflection
amplifier. The position of the stator neutral axis to the stator contact surface is one of the …

This work deals with a novel piezoelectrically driven vibro-impact drilling tool which is
designed to drill holes and take rock samples in NASA's future space missions. The drilling …

Investigation of a novel design tiny piezoelectric inertial motor is given in the paper.
Operation principle of the motor is based on inertial motion of the slider applying sticks and …

A general purpose dynamic modeling method of linear ultrasonic motors (LUMs) is
presented in this paper. The proposed model considers all the LUMs elements, including the …

A slender type of ultrasonic motor using longitudinal-torsional hybrid vibration is proposed
and investigated in this paper. To acquire the response and mechanical capacity of the …