服役状态下履带车辆综合传动装置换挡过程油压曲线自动寻优

Tracked vehicles face complex and harsh driving environments in service. The key performance parameters of hydraulic control system, as an important component of the integrated transmission device, will undergo degradation, leading to a significant deterioration in shifting quality. In order to improve the shifting quality of the integrated transmission device under different service conditions, the degradation mechanism of the hydraulic control system under service conditions is studied. Then, a shifting process model including power source model, planetary transmission unified dynamic model, and load model is established. According to the shift quality evaluation function, the genetic algorithm and global optimization algorithm are used to optimize the oil pressure curve during the shift process of the integrated transmission device. A simulation experimental platform is established for optimizing and testing the shift oil pressure curves of vehicles under different service conditions. The results indicate that the optimization method for shifting oil pressure curve can effectively improve the shifting quality of vehicles under different service conditions.