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Steering system for an autonomous vehicle

A steering system and automatic driving technology, applied in electric steering mechanism, power steering mechanism, vehicle components, etc., can solve problems such as failure to meet safety requirements and insufficient vehicle safety levels

Active Publication Date: 2021-06-22
BOMBARDIER TRANSPORTATION GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some other types of autonomous vehicles, such as those used in the mass transit market, the safety level of the car is insufficient and the aforementioned steer-by-wire system may not meet the safety requirements, requiring a higher safety level, which usually requires Higher Availability and Integrity

Method used

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  • Steering system for an autonomous vehicle
  • Steering system for an autonomous vehicle
  • Steering system for an autonomous vehicle

Examples

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Embodiment Construction

[0029] figure 1 A first embodiment of the invention is schematically depicted. Autonomous vehicle 10 generally includes a body 12 having a passenger compartment for transporting passengers. The vehicle 10 includes at least four wheels 14 each supporting a different end and a different side of the body; and a steering system 16 for steering steerable wheels 18 .

[0030] The commands to turn the autonomous vehicle 10 may all come from the host vehicle controller, which either detects the required turn, or uses a stored path and sends the commands for the turn accordingly. Alternatively, autonomous vehicle 10 can be controlled remotely and receive steering commands remotely.

[0031] The steering system 16 of the example embodiment steers two steerable wheels 18 via two actuators 20 . Each actuator 20 is connected at one end to the body 12 and at its movable end to a different one of the steerable wheels 18 . In an embodiment of the present invention, the steerable wheels 18...

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Abstract

An autonomous vehicle for passengers comprises four steerable wheels where each steerable wheel is steered by a steering system having a set of two actuators. One actuator of each set of actuators is powered by a first power source while the other actuator of the set of powered by a second power source. Four controllers each control one actuator of each set of actuators and one actuator from another set of actuators.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to, or the benefit of, U.S. Patent Application 62 / 951,414, filed December 20, 2019, the entire specification of which is incorporated herein by reference. technical field [0003] The present invention relates generally to the field of autonomous vehicles. More specifically, the present invention relates to a steer-by-wire steering system for autonomous vehicles with a high degree of redundancy and integrity. Background technique [0004] In the automotive field, especially with the advent of autonomous vehicles, steer-by-wire steering systems are increasingly being used. This type of steer-by-wire typically uses sensors to detect the rotation of the steering wheel and send a signal representing the detected rotation to an actuator that acts on the steering rack, which connects the steering wheels. [0005] In other types of autonomous vehicles, another version of the steer-by-wire sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D5/06
CPCB62D5/04B62D5/062B62D5/001B62D5/0418B62D5/003B62D7/159B62D5/0463B62D5/20B62D7/228
Inventor 伯努瓦·圣日耳曼马丁·霍尔伯努瓦·卢西尔塞尔维·霍尔克劳德·泰西耶大卫·洛尔蒂
Owner BOMBARDIER TRANSPORTATION GMBH
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