DE3406408

The circuit senses movement of the rotor by a sliding contact (13) which touches inset conducting elements (12) in the rotor (1) to provide switch action as the rotor rotates. The pulsed signal generated by rotation is fed back into a measuring circuit (DF1-4, BF, C1). A microprocessor (CPU) control...

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Bibliographic Details
Main Author KAWAMURA, MASAHARU, KAWASAKI, KANAGAWA, JP
Format Patent
LanguageEnglish
Published 20.02.1992
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
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Summary:The circuit senses movement of the rotor by a sliding contact (13) which touches inset conducting elements (12) in the rotor (1) to provide switch action as the rotor rotates. The pulsed signal generated by rotation is fed back into a measuring circuit (DF1-4, BF, C1). A microprocessor (CPU) controls the output of an oscillator section (CG2, AS, DF5) to drive the electrostructure elements (3a,3b) of the vibration wave motor at the optimum frequency. This value is stored in the CPU's memory storage. The sliding contact (13) may be replaced by a sensing device which operates on vibration amplitude rather than rotational speed.
Bibliography:Application Number: DE19843406408