基于MATLAB/Simulink的四驱汽车轮间动力分配控制系统设计

The Design of Power Distribution Control System for 4WD Vehicle Based on MATLAB/Simulink

摘要: 汽车四驱功能的实现主要依靠四驱系统，其主要作用是使每个车轮都能分配到最佳的驱动力，从而提高汽车的动力性、操纵稳定性和通过性。由此也出现了四驱汽车动力分配控制系统这一概念。良好的四驱动力分配控制系统可以提高汽车的四驱性能，使四驱汽车的车轮驱动力能得到最佳的分配。本文针对四驱汽车的轮间动力分配控制系统进行设计，利用MATLAB/Simulink对轮间动力分配进行仿真分析，得到车辆质心侧偏角和横摆角速度的变化。研究了轮间动力不同分配比对车辆质心侧偏角和横摆角速度的影响。

Abstract: The realization of the four-wheel drive function of the car mainly relies on the four-wheel drive system, whose main role is to make each wheel can be allocated to the best driving force, so as to improve the power of the car, handling stability and passability. Thus, the concept of power distribution control system for four-wheel drive vehicles also emerged. A good four-wheel drive power distribution control system can improve the four-wheel drive performance of the vehicle, so that the wheel driving force of the four-wheel drive vehicle can get the best distribution. In this paper, the control system of power distribution between wheels of four-wheel drive vehicles is designed. MATLAB/Simulink is used to simulate and analyze the power distribution between wheels, and the change of the lateral declination Angle and yaw Angle speed of the vehicle center of mass is obtained. The effects of different distribution ratio of power between wheels on lateral declination Angle and yaw velocity of vehicle center of mass were studied.