Abstract:

Through discussing the problems of calculation for the braking of multi-axle vehicle, which was based on the classical model and described the general dynamics models for the line braking of multi-axle vehicle. The models reserved the constrain of the suspension and introduced the suspension distortion harmonizing equations. Based on the models, it deduced the general formulas for calculating the vertical counterforce from road. Then it put forward a method for getting the lock sequence of multi-axle vehicle, which is easy to be implemented with computer language, and deduced the general calculation formulas for the brake power，braking acceleration and braking distance of the line braking.

Key words: multi-axle vehicle；braking；dynamics model；lock sequence；braking performance

摘要：

通过分析经典车辆制动动力学模型应用于多轴车制动计算时存在的问题，提出了引进悬架变形协调方程的通用化多轴车直线制动动力学模型，推导了多轴车直线制动时地面法向反作用力的通用计算公式，并提出了一种便于计算机语言实现的直接计算多轴车抱死顺序的算法。基于该算法，推导了地面制动力、制动减速度和制动距离的通用计算公式。

关键词: 多轴车；制动；动力学模型；抱死顺序；制动性能