Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Plural – diverse motor controls
Patent
1980-07-28
1982-04-06
Truhe, J. V.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Plural, diverse motor controls
318257, 318341, 318662, 318599, 307116, 340365C, 328 5, H02P 768
Patent
active
043238297
ABSTRACT:
An electronic control system for controlling the operation of electromotive apparatus utilizes a capacitive sensor for sensing human touch and producing a command signal whose magnitude corresponds to the contact area of the contact. The sensor command signal is applied to an oscillator which produces a series of output width pulses having a frequency corresponding with the magnitude of the sensor command signal. A discriminator detects the trailing edge of the oscillator pulses and produces a series of fixed width pulses and an integrator produces a D.C. voltage signal corresponding to the discriminator output, which voltage signal corresponds to the area in proximity to and thereby stimulated by the human body. A comparator is employed to produce a pulse-width modulated rectangular pulse output whose duty cycle corresponds to the integrator D.C. voltage by comparing the integrator D.C. voltage with a reference triangular waveform. The comparator output is applied via power circuit to drive the electromotive apparatus which may typically comprise one or more D.C. electric motors.
REFERENCES:
patent: 3100860 (1963-08-01), Rosenthal
patent: 4071691 (1978-01-01), Pepper, Jr.
patent: 4103252 (1978-07-01), Bobick
Visser Harry
Witney Gary
Fish Barry M.
Indyk Eugene S.
Schuldenfrei Howard I.
Truhe J. V.
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