自动变速箱液压主油路控制系统稳定性设计

某自动变速箱液压主油路调节回路是一个由压力闭环和流量闭环相嵌套的高阶复杂控制系统,实践中缺乏对于高阶复杂液压系统稳定性设计的有效手段,致使压力、流量震荡成为复杂液压系统常见的故障。提出了基于系统主稳定裕度、主固有频率的优化设计、分析法,可有效解决高阶复杂系统稳定性设计的问题。通过建模分析计算了系统的主稳定裕度和主固有频率,将其作为设计目标,借助DOE工具对关乎系统稳定性的结构参数进行了正向设计,确保系统即具备动态响应快速性,又具备可靠的稳定性。最终通过实验验证了系统模型的准确性及所提出的稳定性设计方法的正确性。

Stability Design of Automatic Transmission Hydraulic Mainline Control System

The hydraulic main line pressure and flow regulation system of an automatic transmission is a complex high order control system. There is lack of effective method in practice to do the stability design of the high order hydraulic control system and instability is often a common problem of the complex hydraulic systems as vibration in pressure and flow. A method based on main stability margin and main natural frequency design are proposed for high order system stability design. System model were built to calculate and to analyze the main stability margin and natural frequency, and optimized system parameters to ensure quick dynamic response, and system stability were acquired through the stability design method by Designed of Experiments (DOE) tools. The test results show the validity of the system model and the proposed stability design method.