Device for electronically controlling a motor vehicle displacement mechanism

Claim 1

An apparatus that operates an electric adjusting drive arranged in a vehicle, the apparatus comprising: an electronic control unit including an anti-jam system for controlling the adjusting drive; a switching strip which is arranged at an end position of a part that is moved by the adjusting drive, and which, in the presence of a pressure load, emits signals to the electronic control unit; an incremental sensor from whose signals the electronic control unit determines the position of the part, a measure for the rotational speed of the adjusting drive and an indication of a jam derived from the rotational speed; and at least two position regions which are traversed by the part during movement of the part and forming a partition of the region over which the part moves; wherein in a first position region, which is disposed closer to the switching strip, the anti-jam system responds either when signals of the switching strip detect a jam or when a jam indication which was derived from the rotational speed is present; and wherein, in a second position region, which is further removed from the switching strip than the first position region, the anti-jam system responds when both: (a) signals of the switching strip detect a jam, and (b) a jam indication derived from the rotational speed is present.

Claim 2

An apparatus that operates an electric adjusting drive arranged in a vehicle, the apparatus comprising: an electronic control unit including an anti-jam system for controlling the adjusting drive; a switching strip which is arranged at an end position of a part that is moved by the adjusting drive, and which, in the presence of a pressure load, emits signals to the electronic control unit; an incremental sensor from whose signals the electronic control unit determines the position of the part, a measure for the rotational speed of the adjusting drive and an indication of a jam derived from the rotational speed; and at least two position regions which are traversed by the part during movement of the part and forming a partition of the region over which the part moves; wherein in a first position region, which is disposed closer to the switching strip, the anti-jam system responds either when signals of the switching strip detect a jam or when a jam indication which was derived from the rotational speed is present; and wherein, in a second position region, which is further removed from the switching strip than the first position region, the anti-jam system responds when both: (a) signals of the switching strip detect a jam, and (b) a jam indication derived from the rotational speed is present.

Claim 8

A method of operating an electric adjusting drive arranged in a vehicle, the method controlling the movement of a movable part, comprising the steps of: detecting, by means of a switching strip located at an end position of said movable part in its region of movement, the presence of a pressure load at said end position; detecting signals from an incremental sensor that monitors said electric adjusting drive; determining, based on the signals detected from said incremental sensor, the position of the movable part, a measure of the rotational speed of the electric adjusting drive and an indication of an occurrence of a jam, based on said measure of the rotational speed; and controlling said electric adjusting drive to adjust the position of said movable part to alleviate a jam; wherein the region of movement of the movable part is divided into at least two position regions; wherein, in a first position region located near said switching strip, an occurrence of a jam is determined to occur when either: (a) signals detected from said switching strip indicate the occurrence of a jam, or (b) said jam occurrence indication is present; and wherein, in a second position region farther away from said switching strip than said first position region, an occurrence of a jam is determined to occur when both: (a) signals detected from said switching strip indicate the occurrence of a jam, and (b) said jam occurrence indication is present.

Claim 9

A method of operating an electric adjusting drive arranged in a vehicle, the method controlling the movement of a movable part, comprising the steps of: detecting, by means of a switching strip located at an end position of said movable part in its region of movement, the presence of a pressure load at said end position; detecting signals from an incremental sensor that monitors said electric adjusting drive; determining, based on the signals detected from said incremental sensor, the position of the movable part, a measure of the rotational speed of the electric adjusting drive and an indication of an occurrence of a jam, based on said measure of the rotational speed; and controlling said electric adjusting drive to adjust the position of said movable part to alleviate a jam; wherein the region of movement of the movable part is divided into at least two position regions; wherein, in a first position region located near said switching strip, an occurrence of a jam is determined to occur when either: (a) signals detected from said switching strip indicate the occurrence of a jam, or (b) said jam occurrence indication is present; and wherein, in a second position region farther away from said switching strip than said first position region, an occurrence of a jam is determined to occur when both: (a) signals detected from said switching strip indicate the occurrence of a jam, and (b) said jam occurrence indication is present.