Apparatus for correcting driving power of vehicle actuator...

Details Apparatus for correcting driving power of vehicle actuator... Apparatus for correcting driving power of vehicle actuator...

2004-12-16

2008-09-02

Sherry, Michael J (Department: 2836)

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

Reexamination Certificate

active

07420290

ABSTRACT:
An apparatus to correct the driving power of an actuator in a vehicle includes a comparator that compares a battery voltage of the vehicle with a predetermined reference voltage. A controller adjusts and outputs a duty ratio of a Pulse Width Modulation (PWM) signal according to the compared result of the battery voltage and reference voltage. A switching element is switched on and off by the PWM signal and outputs the battery voltage after a transformation. An actuator operates by receiving the transformed battery voltage through the switching element. The actuator operates at a constant speed regardless of the variation of the battery voltage.

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patent: 6153945 (2000-11-01), Koss et al.
patent: 6366038 (2002-04-01), Bohm
patent: 6426569 (2002-07-01), Ichikawa et al.
patent: 6798162 (2004-09-01), Makaran et al.
patent: 6815898 (2004-11-01), Schenk et al.
patent: 2004/0169968 (2004-09-01), Mohr et al.

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