A Research on Connected Cruise Control for Vehicles

In this paper connected cruise control (CCC) system is studied, which adds devises for communication between vehicles on the basis of traditional adaptive cruise control (ACC) system to acquire information of surrounding vehicles for enhancing road traffic efficiency and safety. Hierarchical control strategy is developed for CCC on a drive-by-wire electric vehicle, in which a control algorithm with acceleration feedforward control and error feedback control is adopted in upper-layer control, and acceleration and braking look-up tables and the switching rule between acceleration and braking are designed for lower-layer control based on test data. The effects of time headway on platoon driving stability are analyzed in both frequency and time domains. The results of real vehicle test show that compared with traditional ACC system, CCC system can achieve faster and more accurate response, with a less time headway which ensurs platoon driving stability.