Multiple-surface sensor control for a traveling wave motor

Details Multiple-surface sensor control for a traveling wave motor Multiple-surface sensor control for a traveling wave motor

H - Electricity

01

L

H01L 41/04 (2006.01) H01L 41/09 (2006.01)

Patent

CA 2045459

PCT/EP90/01973 FBP 89/4 November 16, 1989 MULTIPLE-SURFACE SENSOR CONTROL FOR A TRAVELING WAVE MOTOR Abstract In an apparatus for evaluating and controlling the driving state of a traveling wave motor composed of a stator equipped with an elastic vibrating body and an excitation system composed of a plurality of segments and generating ultrasound vibrations as well as a rotor that is in contact under pressure with the stator in a surface region and is equipped with a sensor device that is disposed at the vibrating body or at the excitation system, the signals of the sensor device are fed to the regulating circuit of an evaluation and control unit for controlling the excitation system and it is provided that the sensor device includes at least two sensor surfaces which are attached to the vibrating body or to the excitation system and the signals correspond- ing to the sensor surfaces are fed separately to the evalua- tion and control unit. - 23 -

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