摘要
针对直升机操纵助力器工作时高频动载叠加静载气动载荷扰动的特点,设计了模拟高频动载叠加静载的电液加载系统对助力器进行加载。采用静载与高频正弦动载叠加的液压加载系统对助力器进行仿真。建立了电液加载系统的数学模型,在编制的操纵谱和加载谱条件下进行了系统的负载轨迹分析,得到了负载轨迹的解析表达式,进一步得到负载轨迹区域的外包络线的解析表达式。按照加载系统动力机构负载最佳匹配原则的优化设计方法,通过特征点组合并结合实际加载需求进行了液压动力机构参数的优化设计。
Addressing on the working characteristics of helicopter manipulate booster under high-frequency aerodynamic load with dynamic load superimposed on large static load, this paper has developed a electro-hydraulic loading system to simulate the load with sinusoidal dynamic load superimposed on large static load. The mathematical model of the electro-hydraulic loading system is firstly established. The load locus of the hydraulic loading mechanism is analyzed and its analytical expression is carried out under the conditions of designed manipulate spectrum and load spectrum. With further analysis the analytical expression of outer envelope of load locus region is put forward. The hydraulic power mechanism of loading system is designed according to the optimal load matching principle, and its parameters are optimized by combination of feature points and combined with the actual load requests.
出处
《航空科学技术》
2013年第2期60-65,共6页
Aeronautical Science & Technology
基金
航空科学基金(2009ZD51040)项目资助
关键词
伺服加载
负载轨迹
动力机构
优化设计
servo loading, load locus, power mechanism, optimization design
