Patent ID: 11878746
Assignee: ZF AUTOMOTIVE GERMANY GMBH
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 10:
11. A method for operating a steer-by-wire steering system (10), which has a steering wheel actuator (12) with a steering wheel electric motor (20) and a steering wheel control unit (18), an axle actuator (14) with an axle electric motor (32) and an axle control unit (30) and a logic circuit (36), wherein the method includes the following steps:
checking whether there is a malfunction of the steering wheel control unit (18) by the axle control unit (30);
measuring the current (U, V, W) induced by the steering wheel electric motor (20) by the logic circuit (36) and providing a measurement value depending on the induced current (U, V, W);
obtaining at least one measurement value from the logic circuit (36) by the axle control unit (30); and
controlling the steering movement of the axle by the axle control unit (30) by means of the axle electric motor (32) depending on the at least one measurement value obtained if there is a malfunction.