US 12,441,388 B2
Steer by wire system for operating steering wheel and steering column
Karthik Balakrishnan, Coimbatore (IN); and Selvaraj Sharath Kumar, Chennai (IN)
Assigned to Robert Bosch GmbH, Stuttgart (DE); and Bosch Global Software Technologies Private Limited, Bangalore (IN)
Filed by Robert Bosch GmbH, Stuttgart (DE); and Bosch Global Software Technologies Private Limited, Bangalore (IN)
Filed on May 27, 2023, as Appl. No. 18/324,958.
Claims priority of application No. 2022 4103 1009 (IN), filed on May 31, 2022.
Prior Publication US 2023/0382448 A1, Nov. 30, 2023
Int. Cl. B62D 1/187 (2006.01); B62D 1/181 (2006.01); B62D 5/00 (2006.01); H02P 5/68 (2006.01); H02P 7/03 (2016.01)
CPC B62D 1/187 (2013.01) [B62D 1/181 (2013.01); B62D 5/001 (2013.01); H02P 5/68 (2013.01); H02P 7/04 (2016.02)] 4 Claims
OG exemplary drawing
 
1. A steer by wire system for operating a steering wheel and a steering column, comprising at least one steering wheel actuator, wherein:
the steering wheel actuator is configured to actuate the steering wheel by way of a brushless DC motor,
the steering wheel actuator is configured to adjust the steering column in a tilt direction by way of a first brushed DC motor and in a telescopic direction by way of a second brushed DC motor,
the brushless DC motor, the first brushed DC motor, and the second brushed DC motor are configured to operate via a network of switches,
the first brushed DC motor and the second brushed DC motor are configured to operate via two separate H bridges having a shared arm of switches,
the brushless DC motor is configured to operate with two three-phase H bridges, of which one three-phase H bridge is the network of switches of the first brushed DC motor and the second brushed DC motor, when both of the first brushed DC motor and the second brushed DC motor are in a non-operative state.