拖拉机仿真试验台机械变速箱自动换挡控制技术

为实现发动机的最佳燃油经济性和动力性，开发了拖拉机仿真试验台的自动换挡控制系统，完成了系统的软硬件设计和调试。软件开发采用C96高级语言，硬件是以80196KC单片机为核心的单片机系统。该控制系统能够根据所采集的数据来判断拖拉机的运行状态，并按照所选择的换挡规律控制执行机构自动换挡，以达到节约燃油、提高生产效率的目的。试验结果表明，电控机械式自动变速器能够按照一定的换挡规律选择合适的挡位，应用该系统可使拖拉机机组根据外部负载的变化自动调整挡位，实现换挡自动化。

Research of automatic gearshift control technology for tractor mechanical gear-box

As a part of the construction item of tractor working set test bed, this design emphasizes to resolve the problem of automated transmission on the imitation experiment flat. The automated transmission system was empoldered. At the same time the electronic control system was developed meanwhile the soft and hardware was debugged successfully. The system was developed with C96 high class language based on 80C196KC CMOS chip. The control system can judge the tractor running state according to the collecting data, and drive the control system to change shift automatically, so that the fuel cost can be reduced and efficiency can be increase. The experiment result showed that electrical automated mechanical transmission can select appropriate block, according to the given shift. Using the system on the tractor, it can make tractor's shift automatic and adjust the block with the exterior load.