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Automotive Engineering ›› 2024, Vol. 46 ›› Issue (5): 816-829.doi: 10.19562/j.chinasae.qcgc.2024.05.008

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Development Status and Trends of Electronic Control Steering Systems for Commercial Vehicles

Han Dong1,2,Xuewu Ji2,Shuxin Tao2,Titong Jiang2,Xiangkun He3,Heng Wang1,Yahui Liu2()   

  1. 1.School of Automation,University of Science and Technology Beijing,Beijing  100083
    2.School of Vehicle and Mobility,Tsinghua University,Beijing  100084
    3.School of Mechanical and Aerospace Engineering,Nanyang Technological University,Singapore  639798
  • Received:2023-08-29 Revised:2023-11-04 Online:2024-05-25 Published:2024-05-17
  • Contact: Yahui Liu E-mail:liuyahui@tsinghua.edu.cn

Abstract:

The electrification of commercial vehicle steering systems is a necessary path to achieve energy efficiency and intelligence of commercial vehicles. As a result, commercial vehicle steering systems have evolved from traditional hydraulic power steering systems to electrically controlled steering systems, represented by electro-hydraulic coupling power steering systems. This article provides an overview of electrically controlled steering technology of commercial vehicles, summarizing the research on electrically controlled steering technology in terms of typical system configurations, intelligent steering control, and functional safety design to conclude the key research areas and future development trend. The following key findings are summarized: (1) In terms of system configurations, commercial vehicle electrically controlled steering systems primarily focus on electro-hydraulic coupling power steering technology, emphasizing the realization of intelligent steering functions while considering energy efficiency requirements. Electric power steering systems for commercial vehicles are ideal future solutions for electrically controlled steering technology. (2) In terms of intelligent control, to adapt to the development of intelligent commercial vehicles, steering execution control focuses on addressing nonlinearity and timeliness issues caused by hydraulic systems, as well as the challenging lateral dynamics control during trajectory tracking. Assistance driving functions focus on overcoming discontinuities in steering torque caused by the nonlinearity of hydraulic systems and the allocation of human-machine control authority. Autonomous driving functions focus on enhancing safety and fuel economy. (3) In terms of functional safety design, commercial vehicle electrically controlled steering systems focus on the design of fault diagnosis and fault-tolerant control strategies that comply with functional safety standards.

Key words: commercial vehicle steering system, intelligent steering control, functional safety, fault tolerant control strategy