IP Library Granted Patent US 7,690,156
Granted Patent B2
US 7,690,156 · App. 11/312,531 · Granted Apr 6, 2010

Door opening/closing control device

Assignee: Mitsui Mining & Smelting Co., Ltd.
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Quick Facts
Patent No.
US 7,690,156
App. No.
11/312,531
Granted
Apr 6, 2010
Kind
B2
Abstract

A control device controls opening/closing of a sliding door of a vehicle by a motor in cooperation with a drive device that opens and closes the sliding door, and applies proportional plus integral plus differential control to motor speed based on a driving pattern of the sliding door. When a difference between a door speed and a motor speed exceeds a threshold, the control device judges that the vehicle is parked in a tilted state, and adjusts a sum of a proportional element, an integral element, and a differential element of a proportional plus integral plus differential control to a vehicle-tilted time element.

Claims (9)

1. A control device for controlling opening/closing of a sliding door of a vehicle by a motor in cooperation with a drive device that opens and closes the sliding door, comprising:

a detecting unit that detects door speed of the sliding door;

an applying unit that controls a speed of the sliding door, based on a control pattern of the sliding door set in advance, by controlling a speed of the motor with proportional-integral-derivative control;

a tilt-judging unit that judges, when a difference between the door speed and the motor speed exceeds a threshold within a first predetermined time from when the sliding door starts to open/close, that the vehicle is parked in a tilted state; and

an adjusting unit that adjusts a sum of a proportional element, an integral element, and a derivative element of the proportional-integral-derivative control to a vehicle-tilted time element.

2. The control device according to claim 1 , wherein the vehicle-tilted time element limits the sum of the proportional element, the integral element, and the derivative element.

3. The control device according to claim 1 , further comprising:

a calculating unit that calculates a hunting judgment position after elapse of a second predetermined time from when the tilt-judging unit judges that the vehicle is parked in a tilted state,

wherein when the sliding door does not reach the hunting judgment position after the elapse of the second predetermined time, the tilt-judging unit does not perform judgment of whether the vehicle is parked in a tilted state and the adjusting unit does not perform adjustment of the vehicle-tilted time element.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 25, 2011
From: MITSUI MINING & SMELTING CO., LTD.
To: MITSUI KINZOKU ACT CORPORATION
Reel/Frame 026336/0406 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 21, 2005
From: IMAI, TAKUYA; SENBONGI, TSUENORI
To: MITSUI MINING & SMELTING CO., LTD.
Reel/Frame 017399/0525 →
Priority Claims (1)
JP 2004-379881 · Dec 28, 2004 · national
Continuity (1)
Related Publication 20060137250A1 · Jun 29, 2006