论文部分内容阅读
考虑飞机飞行剖面的多变性,针对智能液压泵变压力变流量的特点,提出一种多模性能可靠性分析方法.推导2类工作模式的传递函数模型,分析智能泵性能的主要影响因素,基于累积损伤理论构建多阶段任务可靠性模型.以系统工作效率为目标函数,性能可靠性指标为约束条件,对智能泵作优化设计.最后用优化所得参数求系统在各阶段的性能可靠度,并与机载液压系统常用的恒压泵作节能对比.结果表明:提出的基于节能的智能泵性能可靠性分析方法符合系统实际工况要求,相比传统恒压泵系统,智能泵系统的平均效率可提高15.8%.
Considering the variability of aircraft flight profile, a multi-mode reliability analysis method is proposed for the characteristics of variable pressure variable flow of intelligent hydraulic pump.The transfer function model of two kinds of working modes is deduced and the main influencing factors of intelligent pump performance are analyzed. The cumulative damage theory to build multi-stage mission reliability model.With the system efficiency as the objective function and the performance reliability index as the constraint conditions, the intelligent pump is optimally designed.Finally, the optimal reliability of the system is obtained by using the optimized parameters Compared with the constant pressure pump which is commonly used in onboard hydraulic system, the results show that the proposed reliability analysis method of intelligent pump based on energy saving conforms to the actual working conditions of the system. Compared with the traditional constant pressure pump system, the average efficiency of the intelligent pump system Can increase 15.8%.