Method and system for controlling vehicle door position...

Electricity: motive power systems – Plural diverse motor controls – Motor-reversing

Reexamination Certificate

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Details

C318S286000, C318S376000

Reexamination Certificate

active

07064505

ABSTRACT:
A method and system for controlling vehicle door position having reduced power supply current requirements reduces the cost and weight of a vehicle and further reduces power consumption. The vehicle door control system includes an inverter for converting a DC power source to an AC voltage for driving the motor. The inverter is preceded by a boost converter that maintains a constant voltage at the inverter input, and a capacitor is provided between the converter and inverter for energy storage. Kinetic energy is returned from the door and mechanical portions of the motor through the inverter and stored on the capacitor, reducing the power required from the power source. Operation of the inverter and converter are controlled by timers and detection mechanisms that cease operation of the inverter and converter when the door is held in a fully closed or open position for a predetermined interval.

REFERENCES:
patent: 4780619 (1988-10-01), Campbell et al.
patent: 5341280 (1994-08-01), Divan et al.
patent: 5552681 (1996-09-01), Suzuki et al.
patent: 0728 894 (1996-08-01), None
patent: 2 325 101 (1998-11-01), None
patent: 10 136570 (1998-05-01), None
patent: 2001 078462 (2001-03-01), None
“Development of Linear Motor Driving Door System for Commuter Train,” Yoshihiko Sato et al.; Industrial Application Section of The Institute of Electrical Engineers of Japan, 1999; The Institue of Electrical Engineers of Japan, 1999, pp. 359 to 362.

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