Opening/closing device for automobile door
First Claim
1. 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 driving of the motor, wherein said control unit includes:
- an acceleration computing unit for differentiating a speed signal supplied from said speed sensor to compute an acceleration and output an acceleration signal; and
a control variable setting unit for setting a control variable of the motor based on the acceleration signal from the acceleration computing unit.
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Accused Products
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.
18 Citations
5 Claims
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1. 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 driving of the motor, wherein said control unit includes:
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an acceleration computing unit for differentiating a speed signal supplied from said speed sensor to compute an acceleration and output an acceleration signal; and a control variable setting unit for setting a control variable of the motor based on the acceleration signal from the acceleration computing unit. - View Dependent Claims (2, 3, 4, 5)
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Specification