Human-Centered Time Headway Controller for Cooperative Adaptive Cruise Control (CACC)

The cooperative adaptive cruise control (CACC) system is an extension of the adaptive cruise control (ACC) system in which each vehicle can communicate wirelessly with each other to create a coordinated platoon of vehicles maintaining a harmonized speed. In extant works, the CACC controller of a vehicle is composed of both feedback and feedforward control systems. However, this model does not necessarily ensure vehicle occupants’ comfort, which is the prerequisite for the user acceptance of a CACC system, because of maintaining a constant time headway even for a sudden acceleration or deceleration. Human comfort can be measured by the change of acceleration or deceleration (commonly known as a jerk). By minimizing jerk, human comfort can be maximized in a CACC vehicle. In this paper, a human-centered controller for a CACC vehicle was developed to ensure the maximization of human comfort while optimizing the time headway. For this purpose, a basic CACC controller with conventional feedback and feedforward control system was developed using constant time headway. The analysis conducted in the experiments revealed that the jerk was reduced by 60% for a platoon of CACC vehicles, which proves the efficacy of the human-centered controller varying time headway.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AHB15 Standing Committee on Intelligent Transportation Systems.
• Authors:
  • Islam, Mhafuzul
  • Li, Fangjian
  • Rahman, Mizanur
  • Islam, Sababa
  • Chowdhury, Mashrur
  • Wang, Yue
• Conference:
  • Transportation Research Board 97th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2018-1-7 to 2018-1-11
• Date: 2018

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References;
• Pagination: 6p

Subject/Index Terms

• TRT Terms: Autonomous intelligent cruise control; Headways; Highway traffic control; Traffic platooning; Vehicle to vehicle communications
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Vehicles and Equipment;

Filing Info

• Accession Number: 01663345
• Record Type: Publication
• Report/Paper Numbers: 18-06472
• Files: TRIS, TRB, ATRI
• Created Date: Mar 21 2018 10:04AM