高速履带车辆静液传动改进模糊控制

针对高速履带车辆静液传动系统具有非线性及时变负载等特点,设计了应用于该传动系统的模糊控制器,因系统响应在上升和稳定阶段对模糊控制器的比例因子有不同的要求,定比例因子的模糊控制器难以二者兼顾,故提出一种改进方法,以补偿量及其绝对值的乘积作为新的补偿量对系统进行控制,构成变比例因子的模糊控制器.仿真及试验表明,改进的模糊控制器响应迅速,能有效抑制系统超调量,且系统的动态和静态性能有明显改善,适用于高速履带车辆的静液传动控制.

Control of High Speed Tracked Vehicle Hydrostatic Transmission

It is difficult to formulate exact mathematical model of hydrostatic transmission due to nonlinear and time-varying characteristic, thus fuzzy control was performed to the system. To improve the traditional fuzzy controllers, a novel fuzzy control scheme was studied. By generating a new compensation amount with the product of original one and its absolute value, a fuzzy controller with variable scale factor was formed. The simulation and test results showed that the new controller can achieve high speediness response, restrain the overshoot effectively and obviously improve the dynamic and static characteristics of the system. It is suitable for the high speed tracked vehicle hydrostatic transmission.