Door opening/closing control device

• US 7,690,156 B2
• Filed: 12/21/2005
• Issued: 04/06/2010
• Est. Priority Date: 12/28/2004
• Status: Expired due to Fees

• Current Assignee: Mitsui Kinzoku Act Corporation (Mitsui Mining & Smelting Co., Ltd.)
• Original Assignee: Mitsui Mining and Smelting Company Limited
• Inventors: Imai, Takuya, Senbongi, Tsunenori
• Primary Examiner(s): REDMAN, JERRY E
• Application Number:
  US11/312,531
• Publication Number:
  US 20060137250A1
• Time in Patent Office: 1,567 Days
• Field of Search: 493/60, 49/29, 49/30, 296/155, 318/609, 318/610, 318264-267, 318/272, 318/277, 318/286, 318466-469
• US Class Current: 49/360
• CPC Class Codes: E05F 15/40 Safety devices, e.g. detection of obstructions or end positions
• CPC Class Codes: E05Y 2900/531 Doors

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

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.