基于遗传算法的膜片弹簧优化研究

膜片弹簧离合器是现今手动挡汽车的主要离合器形式,针对膜片弹簧在轴向受压过程中,弹簧大端压紧力与变形量的关系,新膜片弹簧工作点的压紧力与摩擦片最大磨损点所对应的膜片弹簧压紧力之间变化平缓以及驾驶员平均操纵力最小这两个矛盾问题的优化。利用权重系数法对其权重进行分配,并采用遗传算法对压紧力变化的平均值最小与驾驶员操纵力最小进行优化1]。优化表明,在保证足够的工作压紧力下,摩擦片工作过程中磨损导致的膜片弹簧特性曲线部分变化平缓且驾驶员操纵力最小。通过这一算法,可以快速地得到膜片弹簧的各结构参数,为实际设计提供依据。

Optimization of diaphragm spring based on genetic algorithm

The diaphragm spring has compact structure and good nonlinear characteristics.These characteristics make the diaphragm spring clutch running at high speed good performance,stable work and easy to operate.But the traditional design method is not only long in design time but also unsatisfactory in in practical work.In this paper,the mathematical model of diaphragm spring is established by MATLAB.A genetic algorithm toolbox was used to optimize the diaphragm spring.Under the condition of ensuring various properties,the optimized results of the diaphragm spring can be obtained quickly.It provides theoretical reference for the design of diaphragm spring clutch.