Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1989-07-25
1992-08-11
Pellinen, A. D.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
318266, 49 28, 49 31, H02P 122
Patent
active
051381826
ABSTRACT:
An apparatus for controlling a power window capable of maintaining an energized state of the motor to move a window glass, detecting a locked-rotor current flowing through the motor when the window glass reaches a limit position, and de-energizing the motor to stop the movement of the window glass when the locked-rotor current becomes larger than a predetermined value. The period of time for energization of the motor is longer than a period of time from a moment at which the "ON" operation of the automatic mode switch is cancelled to a moment at which the window glass reaches the limit position. It is thereby possible to automatically de-energize the motor when the window glass reaches the limit position, even if the locked-rotor current does not become larger than the predetermined value at this time due to the influence of temperatures or other causes.
REFERENCES:
patent: 4376896 (1983-03-01), Takeda et al.
patent: 4678975 (1987-07-01), Vrabel et al.
patent: 4689450 (1987-08-01), Sawada
Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
Osborn David
Pellinen A. D.
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