Control apparatus for travelling wave driven motor

Details Control apparatus for travelling wave driven motor Control apparatus for travelling wave driven motor

1993-07-20

1995-10-17

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H02N 200

Patent

active

054593697

ABSTRACT:
In a travelling wave driven motor and its driving apparatus, the absolute value of a speed is controlled using a vibration amplitude value as a main manipulation variable. A plurality of frequencies are selectively generated as sub manipulation variables, and are used as the driving frequencies of the motor. In a precision positioning operation (precision operation mode), an electric signal, which has a first selected frequency separated by a predetermined value from a resonance point of a stator of the motor, and has a predetermined amplitude value, is supplied to a piezoelectric element. In a high-speed feed operation (coarse operation mode), an electric signal, which has a second selected frequency near the resonance point of the stator, and has a predetermined amplitude value, is supplied to the piezoelectric element.

REFERENCES:
patent: 5013982 (1991-05-01), Sasaki
patent: 5053669 (1991-10-01), Saeki et al.
patent: 5061882 (1991-10-01), Takagi
patent: 5162708 (1992-11-01), Naito et al.
patent: 5165047 (1992-11-01), Shimizu
patent: 5214339 (1993-05-01), Naito

Affiliated with

Also associated with

Rating

Control apparatus for travelling wave driven motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control apparatus for travelling wave driven motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control apparatus for travelling wave driven motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-599746