航空发动机机械液压控制器建模及仿真技术研究

Modeling and Simulation of Aeroengine Hydraulic-Mechanical Controller

以流量连续方程和力平衡方程为基础,研究了航空发动机机械液压控制器典型部件的建模方法以及系统中存在的非线性环节的描述方法。对某型航空发动机慢车转速燃油控制系统进行了建模和数字仿真研究,结果与工程实践中现场的情况一致,效果优于常规的仿真方法。工程实践已经验证了仿真研究给出的主要的控制器参数改变的建议是正确的,使控制系统的性能达到了设计要求。这表明所提出的航空发动机机械液压控制器建摸和仿真方法是正确,有效的。

In aero - engine hydraulic - mechanical control, a problem arises that how to adjust the element parameters to improve the stability of the whole control system. Modeling simulation is one important method to solve this problem. Based on the flux continuum equation and power balance equation, the modeling method for aero - engine hydraulic - mechanical controller is presented, and the description method for nonlinear characteristics of typical elements is also obtained. In this paper, certain aero -engine local speed controller model is presented by this means. Simulation results of parameter changing effects are consistent with the experimental data of real controller. It proved that the modeling and simulation methods presented for the aero - engine hydraulic - mechanical controller, are correct and effective.