Method for monitoring movable elements

Details Method for monitoring movable elements Method for monitoring movable elements

1994-11-15

1996-05-28

Ro, Bentsu

Electricity: motive power systems

Motor-reversing

Automatic and/or with time-delay means

318266, 318286, 318468, E05F 1510

Patent

active

055214746

ABSTRACT:
In order to improve a method for monitoring movable elements, in particular windows and sunroofs in motor vehicles, such that an object clamped between the movable parts and the part at rest is detected in a reliable fashion, the force acting upon such objects is maintained at the lowest possible value and the direction of the window is inverted as rapidly as possible. In order to ensure a reliable protection, a cutoff threshold consists of a constant component and a variable component, with the size of the difference (Dn) between the cutoff threshold and the instantaneous value of the rotation time (tu) influencing the switching signal.

REFERENCES:
patent: 4347465 (1982-08-01), Goertler et al.
patent: 4746845 (1988-05-01), Mizuta et al.
patent: 5410226 (1995-04-01), Sekiguchi et al.
patent: 5422551 (1995-06-01), Takeda et al.

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