基于模糊推理的液体火箭发动机推力室减损控制研究

Research of damage mitigating control of thrust chamber based on fuzzy logic reasoning for liquid propellant rocket engine

在建立液体火箭发动机动力学模型、推力室冷却夹套隔片结构模型和材料损伤模型的基础上,利用模糊逻辑推理知识设计了模糊推理机,构建了模糊减损控制系统这一有机整体。通过仿真计算,在火箭发动机工作100s期间,推力室喷管冷却夹套隔片有一定变形的情况下,研究了其损伤演化过程及损伤分布。

Based on the model of liquid rocket engine dynamic, the model of the coolant channel ligament and damage model of material, fuzzy-logic controller is designed. Thus, all the models make up of the integer-fuzzy-logic damage control system. The simulations of the damage distribution of the stained coolant channel are shown after the engine works 100s. The damage distribution and growth are studied.