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履带式全地形车前后车体行走驱动系统均采用单泵双马达闭式液压系统,若前后车体的液压马达转速不一致,就会出现前后车体互相拖拽问题。为实现前后车体马达转速同步,利用前后泵压力差值判断前车体是否主动拖拽或被拖拽后车体,通过调节控制前后车体马达电流,使前后泵压力值控制在设计范围之内。试验结果表明,该控制策略在各种工况下均可有效抑制前后车体相互拖拽现象,控制效果良好。
The crawler ATV front and rear body travel drive system adopts a single pump and double motor closed hydraulic system. If the rotational speeds of the front and rear hydraulic motors are inconsistent, the mutual drag of the front and rear bodies will occur. In order to achieve the synchronization of motor speed before and after the body, the difference between before and after the pump pressure to determine whether the front body is automatically drag or drag the body after the vehicle body by adjusting the control current before and after the pump pressure control in the design range Inside. The test results show that the control strategy can effectively reduce the drag and drop between the front and rear body under various working conditions, and the control effect is good.