基于负载自适应的高升力系统高效液压驱动技术

民用飞机对经济性特别关注,大型民用飞机高升力系统工作时间虽短,但消耗功率却很大,可达到主飞控作动系统的3倍以上。传统的飞机高升力系统普遍采用节流控制的液压驱动方案,导致液压驱动效率低。介绍了高升系统应用的4种典型液压驱动方案,阐述了应用变排量液压马达的高效液压驱动理念,对4种方案进行了建模和仿真分析。结果表明,变排量液压马达驱动系统比其他方案的综合效率高21%以上,为国内科技人员研发大型民用飞机高升力系统提供参考。

High Efficient Hydraulic Power Drive Technology Based on Load Adaptive for High Lift System

We pay special attention to economy of commercial aircraft. Although working time of high lift system of large commercial aircraft is short, power consumption is great, which can reach more than three times of that in primary flight control actuation system. A traditional aircraft high lift system generally adopts hydraulic drive schemes of throttle control which causes the problem of low hydraulic efficiency. In view of the problem, we introduce four typical hydraulic drive schemes applied in high lift system, and describe the concept of high efficiency hydraulic drive with variable displacement hydraulic motor. Four schemes are modeled and simulated. The results show that the efficiency of variable displacement hydraulic motor drive system is over 21% higher than that of other schemes. This study provides a reference for domestic technicians on research and development of large commercial aircraft high lift system.