The invention relates to a vehicle multi-target coordinating lane changing assisting adaptive
cruise control method. The method comprises the following steps that 1) LCACC combination property indexes are set according to two-front-vehicle
traceability, multi-vehicle movement safety and longitudinal driving comfort requirements, and the LCACC combination property indexes comprise a cost function and I / O constraints; 2) a multi-target coordinating
optimal control problem is built, solving is carried out through a rolling
time domain optimization
algorithm, the
optimal control quantity is obtained, and
optimal control is achieved. The LCACC cost function is set according to the following steps that a) a
traceability cost function is built through a two-norm linear combination of the vehicle distance errors and vehicle speed errors of the own vehicle and two front vehicles; b) a comfort cost function is built by restraining longitudinal acceleration. The LCACC I / O constraints are set according to the steps that a) in the respect of tracking performance, vehicle following error constraints which are used for limiting the vehicle speed errors and the vehicle distance errors and allowed by a driver are obtained through driver experimental data in a statistic mode; b) in the respect of safety performance, the safety distance between the own vehicle and multiple surrounding vehicles is restrained in the view of vehicle following and collision avoidance; c) in the respect of comfort performance, the expected longitudinal acceleration data range is restrained.