Electricity: motive power systems – Positional servo systems – Pulse-width modulated power input to motor
Patent
1996-08-09
1998-04-21
Ip, Paul
Electricity: motive power systems
Positional servo systems
Pulse-width modulated power input to motor
318629, 318254, 388811, G05B 1128, H02J 102
Patent
active
057421420
ABSTRACT:
An FET switch and an inductor in series with a DC motor supply voltage pulses at a high frequency, a power diode permits current recirculation, and a capacitor connected to the motor maintains a mean DC voltage level on the motor which is proportional to the switching duty cycle. The motor speed is proportional to the mean voltage. Smoothing due to the capacitor and the inductor converts the voltage pulses due to switching to a small sinusoidal ripple to attain low radiated emissions.
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Delco Electronics Corp.
Ip Paul
Navarre Mark A.
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