【摘要】 为解决四自由度行星变速机构方案数量大、优选计算复杂的问题,开展四自由度行星变速机构方案性能规律研究。根据四自由度行星传动的构件之间运动学关系,建立方案模型中制动构件、离合器和辅助构件等系数、各挡传动比、行星排特性参数、行星轮相对转速、操纵力矩和效率的数学模型。针对同一机构类型所有可能的方案模型,分析各项性能指标的内部规律,提出按照相同操纵逻辑原则进行构件组模型分类的方法,在传动方案可行性优选时,对于同一类所有构件组模型只需进行一次计算。通过实例计算表明,该方法有效减小了行星传动方案优选计算量,提升了方案优选效率。更多还原

【Abstract】 In order to solve a huge amount of complex optimization calculation of 4-DOF planetary gear mechanism schemes,the scheme characteristics of four-degrees-of-freedom planetary gear transmission mechanism are studied. According to the kinematic relationship among the components of four degrees-offreedom planetary gear transmission,a mathematical model is established for the coefficients of braking component,clutch and auxiliary component,the gear ratios,the characteristic parameter of planetary gear row,the relative speed of planetary gear,the control torque and efficiency in scheme model. For all possible scheme models with same mechanism,the internal rules of the performance indexes are analyzed to provide a theoretical basis for model classification. A method of component group model classification based on the same control logic principle is put forward. The same kind of component group models can be calculated for one time by using the proposed method for choice of feasibe transmission schemes. Thecalculated results shows that the proposed method can be used to reduce the optimization calculation of planetary transmission schemes,and improve its efficiency.更多还原