Drive control device for opening/closing member

Details Drive control device for opening/closing member Drive control device for opening/closing member

1995-03-28

1996-06-25

Sircus, Brian

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

318476, H02P 300

Patent

active

055303293

ABSTRACT:
A drive control device for an opening and closing member is active to optimally adjust a threshold level for pinch detection. Utilizing a speed sensor or the like, the closing speed of the opening/closing member is detected. The value of the closing speed is renewed in accordance with the closing position and stored in memory. Based on memorized data, a predicting circuit derives a future closing speed. To the predicted value there is added an allowed addition value, to permit a threshold level setting circuit to set an appropriate threshold for pinch detection. The allowed addition value is adjusted in accordance with the closing speed of the opening/closing member by a threshold level adjusting circuit.

REFERENCES:
patent: 4511832 (1985-04-01), Schmitz
patent: 5162711 (1992-11-01), Heckler
patent: 5278480 (1994-01-01), Murray
patent: 5334876 (1994-08-01), Washeleski et al.
patent: 5396158 (1995-03-01), Long et al.
patent: 5404673 (1995-04-01), Takeda et al.
patent: 5422551 (1995-06-01), Takeda et al.

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