以液力机械式变速器为控制对象 ,开发研制了一种以单片机为控制核心的、应用模糊智能控制的自动控制系统。试验表明 ,该系统可使被控制的变速器根据试验工况 (恒定负载、匀变负载 )实现自动换挡 ,系统工作稳定 ,具有较高的抗干扰能力。此研究为该系统装车试验奠定了基础 With hydraulic mechanical transmission as control object, a kind of automatic control system with fuzzy intelligent control is developed, which takes MCU as control core. Experiments show that the system can make the controlled transmission realize automatic shift according to the test conditions (constant load, uniform load), the system works steadily and has high anti-interference ability. This study laid the foundation for the system loading test