Control and parameters matching of straight running for high speed tracked vehicle with hydrostatic drive

The control strategy and parameters matching is critical for the performance of high-speed tracked vehicle with hydrostatic drive that is composed of engine, hydraulic pumps and motors. Based on the analysis of characteristic of engine and pump working together, the pump displacement control strategy is proposed and applied in order to accomplish the aim torque and power of engine. Motor displacement is controlled by engine speed and system pressure so as to realize mobility of vehicle and cooperate with pump control. With the results of parameters calculation and matching, the vehicle and its driving system are modeled in Matlab/Simulink and system simulation under different typical work conditions are achieved with the driver's inputs and control algorithm in-loop. Validity and effectiveness of control strategy and parameters matching are approved by simulation and the field experiments.