A10 Adaptive Cruise Control Considering Trade-off between Following Capability to A Leading Vehicle and Suppression of Fuel Consumption

Abstract

Adaptive Cruise Control (ACC) is an in-vehicle convenience feature designed to maintain a set speed and, when necessary, adjust the speed to maintain an appropriate distance from a leading vehicle. This study aims at proposing a control method for ACC to improve not only following capability to a leading vehicle but also suppression of fuel consumption. It is said that low acceleration drive contributes suppression of fuel consumption, but excessive low acceleration causes worsening following capability. It is because there is trade-off between them and we have to consider both all together. We design a control system for ACC to balance the following capability and the suppression of fuel consumption using Linear Quadratic Integral control. It is demonstrated from some simulations that the control system is effective for suppression of fuel consumption.