电控液驱车辆加速策略研究

为了使液驱混合动力车辆在加速过程中满足驾驶员意图和车辆动力学的要求，该文针对一种应用定压网络液压马达控制系统的电控液驱车辆，进行了加速驱动控制策略的研究；提出了初始压力调节方案和命令速度调节方案2种加速控制策略；在建立系统数学模型、设计加速驱动控制器的基础上，利用MATLAB/SIMULINK对系统进行了加速性能和燃油经济性能仿真；仿真结果表明，本文所提出的2种加速控制策略能够满足驾驶员的加速意图要求，其中命令速度调节方案具有较好的燃油经济性能，初始压力调节方案具有较好的加速动力性能，研究结果可为液驱混合动力车辆加速控制提供参考。

Acceleration strategy for vehicle with electronic control and hydrostatic drive

In order to meet the requirement of the driver and the demand in vehicle dynamics when the vehicle with electronic control and hydrostatic drive accelerates, the acceleration control strategy for vehicle with electronic control and hydrostatic drive based on the theory of hydraulic motor control system in constant-pressure network was studied. The initial pressure regulating scheme and the command speed regulating scheme were proposed. The simulation on the fuel economy and acceleration performance was developed using MATLAB/SIMULINK based on mathematic model of the system and on the designed acceleration drive controller. The simulation results indicated that the two accelerating control strategies proposed in this paper could meet the driver's acceleration requirement, the command speed regulating scheme has a better fuel economy and the initial pressure regulating scheme has a better acceleration power performance. The research results can provide reference for the acceleration control of the vehicle with electronic control and hydrostatic drive.