拖拉机自动导航转向系统的设计及仿真

Tractor Automatic Steering System Design and Simulation

依照拖拉机自动导航转向系统的要求,设计了一种自动转向系统的改造方案,通过加装三位四通电磁换向阀和比例调速阀的旁路节流调速回路,对转向轮的转向和转向速度进行了控制;然后,结合拖拉机结构对其油路改造进行了设计;最后,利用AMESim对系统进行了建模仿真,分析了其动态性能。结果表明,此方案具有效率高、动态响应性能好、精度高及油路改造简单方便等特点。

In accordance with the requirements of Tractor automatic steering system, design of a steering system reforma- tion scheme, By adding the one three position four way electromagnetic valve and a proportional speed-regulating valve bypass throttling speed control circuit, control the wheel steering and steering speed. Then, combined with the tractor, designed the reform. At last, using of AMESIM carried on the system modeling and simulation, Analysis of the dynamic properties. According to the analysis, the scheme has high efficiency, dynamic response performance, and high preci- sion, simple and convenient circuit transformation.