Electricity: motive power systems – Reciprocating or oscillating motor – Energizing winding circuit control
Patent
1985-12-19
1987-06-30
Duggan, Donovan F.
Electricity: motive power systems
Reciprocating or oscillating motor
Energizing winding circuit control
318130, 310 29, H02K 3300
Patent
active
046773533
ABSTRACT:
A method of and apparatus for measuring the vibration amplitude of an electromagnetic vibratory motor is disclosed in which the current induced in the coils of the motor is rectified and sensed and applied to a current signal conditioning circuit to produce an average current signal. The voltage across the coils is sensed and is applied to a voltage signal conditioning circuit to produce a peak voltage signal. First and second predetermined scale factor signals are generated. The average current signal is divided by the peak voltage signal and the result is multiplied by the second scale factor signal. The scaled divided signal is subtracted from the first scale factor signal to yield the desired signal representative of the vibration amplitude of the vibratory motor.
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Dresser Industries Inc.
Duggan Donovan F.
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