Patent ID: 6936982

Claim:
A device for actuating a plurality of electric motors in a transportation device, said device comprising: a plurality of output stages and a control circuit for actuating said output stages, wherein the output stages are connected to a plurality of electric motors, wherein said plurality of output stages are each additionally connected to one further electric motor by the control circuit, and wherein the control circuit actuates each output stage whereby said each output stage actuates one of the plurality of electric motors and the further electric motor, with the output stages being interconnected to one another and to the electric motors in a matrix configuration so that a plurality of row lines and a plurality of column lined at whose points of intersection the plurality of electric motors are arranged, and wherein using each of said plurality of row lines and each of said plurality of column lines, in each case, two of said output stages are connected to power breakers which connect, in accordance with signals of the control circuit, to one of a first and a second potential (earth, U batt ) so that an actuated one of said plurality of electric motors and said further electric motor can be operated either in one direction or the other, wherein, when one of said output stages fails, an error routine provides switching over to another one of said output stares of the matrix, with the said one electric motor being actuated by another one output stage.