摘要
着重分析了减损与延寿控制律的综合过程,提出其基于多目标优化方法的理论基础。在建立某型液体火箭发动机系统动力学模型、关键部件之涡轮叶片的结构分析模型及其材料损伤模型的基础上,分析了应用非线性规划法求解减损与延寿控制律的过程。对发动机起动过程实施减损与延寿控制,结果表明在系统性能略微损失的情况下,可以较大幅度地减小涡轮叶片的损伤,从而达到延长发动机工作寿命的目的。
The damage-mitigating and life-extending control （DMLEC） based on multiobjective optimization （MOO） is presented by DMLEC policy analysis and synthesis. The progress of solving DMLEC policy by using nonlinear programming is analysed which combines with the dynamics modelling, the structural analysis of turbine blade and the damage modelling of a certain liquid-propellant rocket engine. Then, the start-up process of the LRE under the control of DMLEC is simulated. The result indicates that the damage of blade is mitigated and the service life of LRE is extended considerably while the system performance is only debased a little.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2005年第6期9-13,共5页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目(50276068)
关键词
液体推进剂火箭发动机
减损与延寿控制
多目标优化
非线性规划
liquid-propellant rocket engine
damage-mitigating and llfe-extending control
multiobjective optimization
nonlinear programming
