Study of cooperative adaptive cruise control system spacing policy
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Ma Jun, Gong Zaiyan, Zhang Qianwen
This paper improves the spacing policy of cooperative adaptive cruise control system. Improved policy can predict the velocity variation trend of former vehicle by considering the former vehicle' acceleration via vehicle-to-vehicle wireless communication. As a result, it improves the perspectiveness and anti-interference performance of distance control. In order to verify whether the improved policy is more effective, adaptable and safe, this paper uses MATLAB/Simulink to do the computer simulation under four common traffic scenarios. Simulation compares three different spacing distances’ desirable distance, actual distance, velocity and acceleration. It turns out that distance control has better adaptability and dynamic performance by using improved spacing policy. Under steady following and approaching scenario, improved spacing policy effectively improves the ride comfort. On the other hand, it better driving safety under cut in and hard brake scenario.
Cooperative Adaptive Cruise Control (Cacc) System, Spacing Policy, Traffic Scenario Simulation