摘要
提出了弹射座椅全姿态关系式,介绍了在不同弹射条件下座椅全姿态关系式的取值范围以及六自由度仿真中座椅姿态参数初始值的传统选取方法。通过计算机仿真,比较分析了全姿态关系式与六自由度仿真中不利姿态传统处理方法的差异。仿真结果表明,全姿态关系式能够更准确的描述弹射过程,是弹射座椅多参数多模态控制研究和第四代自适应控制研究的基础。同时,仿真结果也表明,传统处理方法在单俯仰弹射条件不会引起误差,其它条件则会存在较大的误差,所得的最低安全救生高度一般偏低。
In order to determine the initial value of seat attitude parameter in 6 DOF function, an ejection seat all - attitude formula was presented in this paper. The general method for selecting initial value of seat attitude parameter and the scope of all - attitude formula were introduced. The altitude error of all - attitude formula is compared with general method adverse attitude condition through simulation. Simulation results show that the all - attitude formula can more exactly describe the ejection process than general method and is the basis of studying the ejection seat multi - parameter and multi - mode control and the fourth generation ejection seat control. At the same time, the results also show that general method will not cause error under single pitch condition and will cause big error under other ejection conditions. In general, the safe escape altitude obtained by using general method is lower than using all - attitude formula.
出处
《计算机仿真》
CSCD
2007年第5期50-53,共4页
Computer Simulation
基金
航空基础科学基金(3E51048)
关键词
弹射座椅
不利姿态
弹射仿真
欧拉姿态角
Ejection seat
Adverse attitude
Ejection simulation
Euler attitude angle
