Patent ID: 7690152

Claim:
An opening and closing member control system comprising: a drive means for driving an opening and closing member in an opening direction and a closing direction; a moving speed sensing means for outputting a speed measurement signal, which indicates a moving speed that corresponds to movement of the opening and closing member driven by the drive means; and a pinching sensing means for sensing pinching of an object by the opening and closing member based on the speed measurement signal, wherein: the pinching sensing means prestores a plurality of first amounts of change in the moving speed, each of which is computed based on the speed measurement signal that is previously received while the opening and closing member is driven in the closing direction, each of the plurality of first amounts of change in the moving speed being associated with a corresponding one of a plurality of divided ranges, into which a moving range of the opening and closing member is divided, the opening and closing member being movable within the moving range, each of the plurality of first amounts of change in the moving speed serving as learning stored data; the pinching sensing means computes a second amount of change in the moving speed at a current position of the opening and closing member based on the speed measurement signal that is received while the opening and closing member is driven in the closing direction; the pinching sensing means computes a difference between the second amount of change in the moving speed and the learning stored data, which is associated with one of the plurality of divided ranges that corresponds to the current position of the opening and closing member; and the pinching sensing means confirms the pinching of the object by the opening and closing member by a comparison between the difference and a pinching determining threshold value.