Fault Tolerant Steer-by-Wire System

Overview

This technology is developed for autonomous driving. Steer-by-Wire (SbW) replaces the mechanical linkages between the steering wheel and the steering rack mechanism with the linkage of sensors, controllers and electrically controlled actuators. This innovation is based on intelligent digital model, which can optimise steering related parameters to provide a personalised and natural steering experience to users.

  • Fault Tolerant Steer-by-Wire System 0
Commercialisation opportunities
Exclusive licensing
Problem addressed

There is no steering system meets with Automotive Safety Integrity Level D (ASIL-D) requirement suitable for autonomous driving vehicle.

Innovation
  • Dual redundancy design motor and control system, maintaining basic steering ability during fault condition
  • Steering commands transmit through wires, meeting the requirement of autonomous driving vehicle
Key impact
  • Foster the future autonomous development by going SbW
  • Remove the mechanical linkage between steering wheel and steering rack
  • Fault tolerant and cost-effective mechanical design
Application
  • Autonomous driving vehicle
  • Industrial motor control system with enhanced safety requirement

Patent

  • CN Utility Model Patent: 202121597084.3
  • HK Short Term Patent: HK30043358
Centre of Advanced Power and Autonomous Systems (APAS)

Centre of Advanced Power and Autonomous Systems (APAS) (formerly Automotive Platforms and Application Systems R&D Centre) was established in 2006 and is fully integrated as a business division under HKPC on 1 April 2025. APAS continues to undertake market-led R&D programmes spanning green transportation, smart mobility, intelligent systems and emerging applications, as well as commercialises R&D results in collaboration with industry, universities and technology institutes to enhance the competitiveness of Hong Kong's automotive and other transportation sectors in new energy and smart driving.

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