【摘要】 离合器接合过程的抖振现象严重影响动力传动系统平顺性,增大摩擦片的磨损,是一个困扰离合器接合控制的问题。从摩擦导入阻尼的角度研究抖振机理,将摩擦环节的导入阻尼模型嵌入三自由度动力学模型。应用根轨迹法进行稳定性分析,得到系统稳定条件。综合激振避免和稳定性控制两条减振途径,推导出压紧力加载的抖振抑制算法,并分析了温度的影响。理论推导和仿真结果表明,离合器接合过程动力学稳定的必要条件是滑摩扭矩综合阻尼为正斜率特性,且该特性由摩擦特性和压紧力历程共同决定。考虑摩擦特性,可合理施加压紧力,以形成滑摩扭矩综合阻尼的正斜率特性,可有效抑制抖振、提高离合器接合品质。更多还原

【Abstract】 Improper clutch engagement deteriorates the running performance of drivetrain and the wear durability of friction plates.It has been a challenge ever so long.A new idea was introduced to consider the combined effect of friction characteristic and pressure profile as an induced damper,which affected the stability of the drivetrain.A judder control algorithm was deduced,which could not only meet the necessary condition of stability but also avoid excitation.Simulations for both positive and negative friction characteristic were provided.The results validate that positive rate of the combined frictional torque damper is a necessary condition to retain stability.As long as the pressure is properly controlled to make a positive rate of the combined frictional torque damper,the performance of clutch engagement can be improved effectively.更多还原