A Research on Dual Hydraulic Motor Synchronizing Driving System with Pressure Coupling

This paper introduces a new concept about pressure coupling in dual hydraulic motor synchronizing driving system. The mathematic models of systems are established in together-drive mode where two hydraulic motors together drive one common load and peer-to-peer mode where two motors drive one load respectively. Based on these mathematic models, a simulation analysis is conducted to probe the influence exerted by pressure coupling on the frequency response and the model consistency of two hydraulic motors, which gets verified by simulations and experiments later. The results show that pressure coupling reconstructing mathematic models of systems improves the model consistency of two motors and ameliorates synchronization performances.