The steering mirrors and the focusing mechanisms are the key components of the optical
system. Traditional steering mirrors driven by voice coil actuator or piezoelectric stack …

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 …

A cylindrical type traveling wave ultrasonic motor using longitudinal and bening composite
transducer was proposed in this paper. A composite transducer is attached to the cylinder on …

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 …

To avoid the disadvantages of conventional traveling wave ultrasonic motors-lower
efficiency PZT working mode of d 31, fragility of the PZT element under strong excitation …

Micro-stepping motion of ultrasonic motors satisfies biomedical applications, such as cell
operation and nuclear magnetic resonance, which require a precise compact-structure non …

This paper establishes a general computational framework to solve the muti-scale contact
problem by integrating the statistical contact model with the finite element format. Compared …

In previous studies, contact models of traveling-wave ultrasonic motor (TWUSM) only
considered the effect of the preload on the resonance frequency, and were based on …

The tribological behavior of stator friction material and rotor in the traveling wave ultrasonic
motor (TWUSM) shows some particularities because of the applied way and the special …

This paper proposes frequency speed control of rotary travelling wave ultrasonic motor
(TWUSM), type Daimler Benz AWM90-X motor. The control characteristics of TWUSM are …