摘要
提出了一种重复使用运载器(RLV)末端能量管理段的混合制导方案,以解决传统制导方案实现过于复杂的问题。在超音速飞行阶段,RLV飞行包线大,混合制导方案采用动压控制策略代替传统制导方案的高度控制策略,使得制导对轨迹剖面要求更少,轨迹参数计算量更小,控制结构也更加简单,从而大大简化了能量管理段的制导;在亚音速飞行阶段,RLV飞行包线小,混合制导方案采用与传统制导方案一致的高度/速度控制策略,其控制效果好,同时满足亚音速飞行阶段对飞行器高度、空速精确控制的要求。仿真结果表明,混合制导方案是可行的。
A mixed guidance method for terminal area energy management （TAEM） of reusable launch vehicle （RLV） to simplify the traditionary guidance method.During the TAEM supersonic flight phase,with wide flight envelop,the mixed guidance method adopts dynamic pressure control instead of the traditionary attitude control.The dynamic pressure control method not only requires less TAEM trajectories and parameter calculation,but also makes the guidance loop simpler,which greatly simplifies the guidance system for TAEM.During the subsonic flight phase,with narrow flight envelop,the mixed guidance method adopts the same attitude/speed control with traditionary guidance method,while the traditionary method is demonstrated to produce good performance and meet the strict requirements of attitude and airspeed in subsonic flight phase.Furthermore,the mixed guidance method is proven to be useful by testing with computer simulation.
出处
《航天控制》
CSCD
北大核心
2014年第1期30-34,39,共6页
Aerospace Control
