Electricity: motive power systems – Positional servo systems – With particular motor control system responsive to the...
Patent
1997-01-29
1999-04-27
Ip, Paul
Electricity: motive power systems
Positional servo systems
With particular motor control system responsive to the...
318696, 318254, H02P 800
Patent
active
058982884
ABSTRACT:
Disclosed herein is a motion monitoring system for monitoring movement of a brush-type DC motor. The system includes an electrical comparator having first and second differential inputs. A current detector is connected to provide a drive current signal to the first differential input of the comparator. A low-pass filter is connected to provide an averaged drive current signal to the second differential input of the comparator. When a drive current is applied to the motor, the comparator produces a stream of binary logic-level pulses corresponding to motor movement. The pulses can be used to determine motor position and velocity.
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Barbehenn George
Callaway Robert P.
Quintana Jason
Rice Huston W.
Hewlett--Packard Company
Ip Paul
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