Abstract: Aim to the auto-modeling and characteristic analysis of marine hydraulic coupling, the kinetic mechanism of hydraulic coupling is analyzed. A new modeling method based on evolutionary algorithm to identify the kinetic model structure and parameters of hydraulic coupling is focused on. The hybrid evolutionary strategy is designed and implemented, and the explicit model with high precision is obtained. Based on hydraulic coupling kinetic model and existing marine power plant performance simulation model library, the model integrated and computation is completed, the dynamic characteristic during engaging and disengaging process of marine combined diesel and diesel propulsion plant is studied, and the effect of oil pressure change curve to dynamic process performance is analyzed. The results show that evolutionary algorithm can auto-research space of operators and parameters, and the real-time and high precision kinetic model of hydraulic coupling can be obtained by using evolutionary algorithm. In marine propulsion plant which contain hydraulic coupling, the performance of clutches during engaging and disengaging process became more smoothness. The change of oil pressure curve effect the time and placidity of clutch’s dynamic process. The research results establish a base for the performance optimization of marine hydraulic coupling.

Key words: Auto-modeling, Characteristic analysis, Evolutionary algorithm, Hydraulic coupling