开发了ZL50装载机液力传动变速箱自动换挡操纵系统及其电子控制单元(ECU)。针对装载机作业过程中换挡操纵的复杂性, 该系统采用了人机协同配合的多模式换挡控制方式;完成了控制软件设计、硬件电路及可靠性设计, 并对研制的自动换挡操纵系统进行了台架试验和环境试验, 验证了系统功能的实用性和工作可靠性。试验结果表明:自动换挡操纵系统可按驾驶员选择的控制方式工作, 实现自动选挡功能及换挡过程的平稳性控制。

Authors research on developing of automatic gear shifting control system and its electronic control unit. Because of complexity of loaders gear shifting, a multi-mode control methodis adopted which can coordinate operator and computer control functions. Systems software program, hardware circuit and its reliability design are carried out.ECUs function and operationreliability are proved during bench and environmental tests.It shows that the systemachieves gear-selecting and smooth gear-shifting control functions under different working modes.