Accession Number:

ADA429583

Title:

Self-oscillating Ultrasonic Micro-motor and It's Application

Descriptive Note:

Corporate Author:

SEIKO INSTRUMENTS INC CHIBA (JAPAN)

Personal Author(s):

• Iino, A.
• Suzuki, K.
• Suzuki, M.
• Nitadori, K.
• Kasuga, M.

Report Date:

2003-06-01

Pagination or Media Count:

13.0

Abstract:

We have developed an ultrasonic micro-motor, which is expected to be used in a broad range of fields. The ultrasonic micro-motor, which can be driven by a single signal and change the rotational direction of a rotor easily by only selecting the electrode to apply drive signal, can easily construct a self-oscillating circuit and simplify the drive circuit. We have also simplified the motor structure which is easy to miniaturize and mass-produce. We applied the ultrasonic micro-motor to some functions in watches and clocks. Furthermore we have tried precise positioning control with the ultrasonic micro-motor, and consequently its potential for the ultra-precision positioning has been revealed.

Descriptors:

• *DRIVES(ELECTRONICS)
• *CRYSTAL OSCILLATORS
• POSITION(LOCATION)
• ELASTIC PROPERTIES
• JAPAN
• POSITION FINDING
• MOTORS
• HIGH VOLTAGE

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE