论文部分内容阅读
为探索轻质化燃油系统结构,基于电调燃油变量泵的航空发动机转速控制系统,构建了柱塞泵斜盘位置电液伺服控制系统,油泵出口燃油直接输入电液伺服阀;建立了电液伺服阀线性化模型。通过数字仿真,研究了电液伺服阀工作特性,并得到了其适应性模型;在航空发动机特性半物理试验系统上,对斜盘位置电液伺服控制系统实物进行了验证试验,并与航空发动机模型一起构成了发动机转速闭环控制系统。结果表明:变输入压力的燃油电液伺服位置控制系统有效可行,变量泵工作稳定可靠,电液伺服阀模型能够准确反映实际工作状况;基于变参数PI控制算法的转速闭环控制初步取得成效。
In order to explore the structure of light-weight fuel system, an aero-engine speed control system based on electric variable fuel pump was built, and the electro-hydraulic servo control system of the swash plate was built. The outlet fuel was directly input to the electro-hydraulic servo valve. Servo valve linearization model. Through the numerical simulation, the working characteristic of the electro-hydraulic servo valve was studied and its adaptability model was obtained. On the semi-physical test system of aeroengine characteristics, the physical and electrical servo control system of the swashplate was verified and tested, The models together form the engine speed closed-loop control system. The results show that the fuel electro-hydraulic servo position control system with variable input pressure is effective and feasible, the variable pump works stably and reliably, and the electro-hydraulic servo valve model can accurately reflect the actual working conditions. The speed closed-loop control based on variable parameter PI control algorithm has achieved initial success.