Han Gaining, Fu Weiping, Wang Wen
School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China; Information Engineering Department, Xianyang Normal University, Xianyang, Shaanxi 712000, China.
School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China.
Comput Intell Neurosci. 2016;2016:6540807. doi: 10.1155/2016/6540807. Epub 2016 Jan 12.
In the behavior dynamics model, behavior competition leads to the shock problem of the intelligent vehicle navigation path, because of the simultaneous occurrence of the time-variant target behavior and obstacle avoidance behavior. Considering the safety and real-time of intelligent vehicle, the particle swarm optimization (PSO) algorithm is proposed to solve these problems for the optimization of weight coefficients of the heading angle and the path velocity. Firstly, according to the behavior dynamics model, the fitness function is defined concerning the intelligent vehicle driving characteristics, the distance between intelligent vehicle and obstacle, and distance of intelligent vehicle and target. Secondly, behavior coordination parameters that minimize the fitness function are obtained by particle swarm optimization algorithms. Finally, the simulation results show that the optimization method and its fitness function can improve the perturbations of the vehicle planning path and real-time and reliability.
在行为动力学模型中,由于时变目标行为和避障行为同时发生,行为竞争导致智能车辆导航路径出现震荡问题。考虑到智能车辆的安全性和实时性,提出粒子群优化(PSO)算法来解决这些问题,以优化航向角和路径速度的权重系数。首先,根据行为动力学模型,结合智能车辆行驶特性、智能车辆与障碍物之间的距离以及智能车辆与目标之间的距离定义适应度函数。其次,通过粒子群优化算法获得使适应度函数最小化的行为协调参数。最后,仿真结果表明,该优化方法及其适应度函数能够改善车辆规划路径的扰动以及实时性和可靠性。