Vibration actuator and method of control

Details Vibration actuator and method of control Vibration actuator and method of control

1996-05-13

1998-06-02

LaBalle, Clayton E.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

318116, H01L 4104

Patent

active

057605270

ABSTRACT:
An ultrasonic actuator which can be accurately controlled at low drive speeds and with reduction in speed irregularities at low speeds. The ultrasonic actuator includes elastic bodies joined to electromechanical conversion elements and a relative motion member in compressive contact with the elastic bodies. A control system outputs first and second drive signals to the electromechanical conversion elements to control the vibration actuator. The control system directly controls the voltage of the first drive signal to independently control the respective voltages of the first drive signal and a second drive signal.

REFERENCES:
patent: 5140231 (1992-08-01), Kashiyama
patent: 5233274 (1993-08-01), Honda et al.

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