Linear ultrasonic motor for absolute gravimeter

A Linear Ultrasonic Motor for Nano-technology

In response to rising demand for high performance actuators to serve nano-technology, a linear ultrasonic motor was designed and constructed to verify its potential as a viable nano-actuator. After establishing the analytical model that elucidates the physics of the ultrasonic motor operation, experimental performance tests were conducted in a fully digital controlled real-time control environm...

Supervisory Genetic Algorithm Control for Linear Ultrasonic Motor Drive

This study presents a supervisory genetic algorithm (SGA) control system for a linear ultrasonic motor (LUSM) driven by a two-inductance two-capacitance (LLCC) resonant driving circuit. First, the motor configuration and driving circuit of an LUSM are introduced, and its hypothetical dynamic model is described briefly. Since the dynamic characteristics and motor parameters of the LUSM are highl...

Henri 16 . 04 . 2010 Final report Absolute gravimeter Intercomparison

Study on a rotary-linear 2-DOF micro ultrasonic motor

1. Introduction Ultrasonic motor (USM) which has many useful features, such as high torque at low speed, precise position, quick response, and no electromagnetic interference, has been widely used in the fields of robotics, medicine and optics

Development of Deep-Sea Resonant Sandwich Linear Ultrasonic Motor

A deep-sea resonant sandwich linear ultrasonic motor is proposed and designed. We determine the parameter of its structure by finite-element analysis. The piezoelectric actuator adopts compound vibration mode of fifth order bending vibration and second order longitudinal. The mode degeneracy of that is completed. We manufacture the prototype to measure the performance of it. We measure its vibr...