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考虑导弹1阶驾驶仪的近似最小加速度峰值导引律 被引量:1
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作者 郭琨 杨树兴 《兵工学报》 EI CAS CSCD 北大核心 2018年第1期83-93,共11页
为避免操纵能力受限的导弹在实现大落角约束时出现控制饱和问题,提出一种考虑系统惯性且加速度峰值近似最小的解析形式组合导引律。通过设计切换点以及后段惯性补偿项,该组合导引律由圆弧-直线导引律和带1阶惯性补偿项的多项式导引律组... 为避免操纵能力受限的导弹在实现大落角约束时出现控制饱和问题,提出一种考虑系统惯性且加速度峰值近似最小的解析形式组合导引律。通过设计切换点以及后段惯性补偿项,该组合导引律由圆弧-直线导引律和带1阶惯性补偿项的多项式导引律组合而成;通过数学推导,证明了切换点必然存在,且组合导引律的加速度峰值出现在切换点;结合前段圆弧-直线导引律对加速度峰值的优化能力,实现了组合导引律的近似最优性。仿真结果表明:组合导引律的加速度在切换点后不再增大,且落角约束得到了满足;与数值最优解的比较进一步验证了该组合导引律的近似最优性。 展开更多
关键词 导弹 最小加速度峰值 落角约束 最优控制 1阶驾驶仪 圆弧-直线导引律
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A Quantitative Computational Method for Landslip Orientation of a Body Isolated from Bed Rock in Mountain by Using Spatial Analytic Geometry
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作者 Chenggui Huang 《Applied Mathematics》 2013年第8期1125-1141,共17页
The paper is going to give a quantitative computational method for “Landslip Orientation of a body isolated from bed rock in Mountain” only with spatial analytic geometry. The paper gives computational formulae in p... The paper is going to give a quantitative computational method for “Landslip Orientation of a body isolated from bed rock in Mountain” only with spatial analytic geometry. The paper gives computational formulae in proper order for only landslip plane, just two landslip planes and just three landslip planes, and gives numerical examples. And the paper gives a general computational model for landslip orientation of m landslip planes. The author puts forward “Un-allowed Straight Angle Law”, “Critical Straight Angle Law” and “Allowed Straight Angle Law”. Finally, the author gives a project expression of a landslip plane on unit sphere. 展开更多
关键词 Landslip Plane NORMALIZATION of Horizontal PROJECT un-allowed straight angle law Critical straight angle law Allowed straight angle law PROJECT Expression According to Unit SPHERE
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