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Title:
WINDOW SWITCHING CONTROL DEVICE
Document Type and Number:
Japanese Patent JP3812048
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To achieve a judgment being strong against disturbance without delaying the judgment time, by decreasing sensitivity for pinching a foreign matter while time when the fluctuation value of detection operation state operates as a load against a driving means is short, and by increasing the sensitivity while the time becomes longer.
SOLUTION: A microcomputer 70 receives a constant voltage from a power supply circuit 70a for operating and executing a program, calculates the rotation speed of a DC motor M, and is subjected to the arithmetic operation, for example, of the cumulative sum of the fluctuation rate. Then, if time when the rotation speed of the DC motor continuously fall is short, the sensitivity for inserting a foreign object by a window is decreased. On the other hand, if time when the rotation speed continuously falls becomes longer, the sensitivity for pinching a foreign matter by the window is increased. Therefore, even if a load being caused by disturbance such as mechanical vibration being generated while a vehicle is in motion or a case where a door is strongly shut is added, an improper judgment is prevented due to a rapid change, thus reducing resistance against disturbance and performing the judgment for pinching the foreign matter properly.


Inventors:
Norio Terashima
Application Number:
JP11833397A
Publication Date:
August 23, 2006
Filing Date:
May 08, 1997
Export Citation:
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Assignee:
株式会社デンソー
International Classes:
E05F15/10; E05F15/41; E05F15/603; E05F15/695; H02P3/08; H02P29/00; (IPC1-7): H02P5/00; E05F15/10; H02P3/08
Domestic Patent References:
JP8260810A
JP9032414A
JP7269225A
JP3143284A
Attorney, Agent or Firm:
Yoji Ito
Takahiro Miura