Skip to main content

Active Control of Self-Locking Torque of Traveling-Wave Ultrasonic Motors Using Standing-Wave Operation

Buy Article:

$60.90 plus tax (Refund Policy)


This article presents a new approach to perform self-locking torque control of traveling-wave ultrasonic motors. It is to engage the motor under standing-wave operation. At that mode, the motor constantly alternates between a “lock” state and a “float” state at high frequency. The self-locking torque is thus reduced. The basic operating principle of the motor is discussed. Theoretical derivation demonstrates that the voltage amplitude can be used as the control variable to manipulate the self-locking torque. Simulation is performed using an equivalent circuit analysis. Experiments have shown consistent results with simulation, and confirm the effectiveness of the method.

Keywords: self-locking; torque control; ultrasonic motor

Document Type: Research Article


Affiliations: Department of Electrical & Electronic Engineering, The University of Hong Kong, Hong Kong

Publication date: July 1, 2006

More about this publication?

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Partial Open Access Content
Partial Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more