US Patent Application 18324958. Steer by Wire System for Operating Steering Wheel and Steering Column simplified abstract

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Steer by Wire System for Operating Steering Wheel and Steering Column

Organization Name

Robert Bosch GmbH

Inventor(s)

Karthik Balakrishnan of Coimbatore (IN)

Selvaraj Sharath Kumar of Chennai (IN)

Steer by Wire System for Operating Steering Wheel and Steering Column - A simplified explanation of the abstract

This abstract first appeared for US patent application 18324958 titled 'Steer by Wire System for Operating Steering Wheel and Steering Column

Simplified Explanation

The abstract describes a steer by wire system that uses various motors to control the steering wheel and steering column of a vehicle.

  • The system includes a steering wheel actuator, which is operated by a brushless DC motor.
  • The steering wheel actuator can adjust the tilt and telescopic direction of the steering column.
  • The tilt direction is controlled by a first brushed DC motor, while the telescopic direction is controlled by a second brushed DC motor.
  • Both brushed DC motors operate using separate H bridges, which have a shared arm of switches.
  • The brushless DC motor operates with two three-phase H bridges, one of which is used for the first and second brushed DC motors.


Original Abstract Submitted

A steer by wire system includes at least a steering wheel actuator for operating steering wheel and steering column. The steering wheel actuates the steering wheel actuator by way of a brushless DC motor. The steering wheel actuator adjusts 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 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.