Opening/closing device for automobile door

Details Opening/closing device for automobile door Opening/closing device for automobile door

1997-05-15

1998-05-26

Ro, Bentsu

Electricity: motive power systems

Automatic and/or with time-delay means

Rate-of-change of a condition

318463, 318 1, B60J 504

Patent

active

057571562

ABSTRACT:
An opening/closing device for an automobile door comprising a speed sensor for detecting a moving speed of a door, a motor for applying an opening/closing assisting force to the door, and a control unit for controlling the driving of the motor, is provided. The control unit includes an acceleration computing unit for differentiating speed signals supplied from the speed sensor to compute accelerations and output acceleration signals and a control variable setting unit for setting control variables of the motor based on acceleration signals from the acceleration computing unit. Thereby, even if a torque sensor for detecting the operating force of a person operating the door is omitted, it is possible to generate control variables corresponding to acceleration signals which are equivalent to control variables corresponding to torque to drive the motor.

REFERENCES:
patent: 5653056 (1997-08-01), Stark

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