摘要
分析环境波动对地球大气边缘高超声速飞行的影响,论证了利用微弱气动力实现再入点调整的可能性。提出神经网络I-PIDA姿态控制策略,控制力矩由脉宽调制驱动的反作用推力器实现,利用模糊预测制导的方法实现再入点的精确调整。仿真算例说明该方法可以实现姿态跟踪和再入点的位置调整,并具有较强的鲁棒性。
The influence of environmental fluctuations on the hypersonic flight at the edge of Earth＇ s atmosphere is analyzed. It is proved that the weak aerodynamic force can achieve the adjustment of re-entry position. A method named neutral network I-PIDA attitude control strategy is proposed. The attitude control torque is given by using the reaction thruster driven by PWM. The fuzzy predictive guidance is used to achieve the accurate adjustment of re-entry position. The numerical examples show that this method has excellent results for both attitude tracking and re-entry position adjustment. And its robustness is proved to be very strong.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2013年第7期946-954,共9页
Journal of Astronautics
基金
国家自然科学基金项目(11002143)
中国科学院力学研究所MAM青年探索基金项目
关键词
地球大气边缘
高超声速
再入点调整
神经网络I-PIDA
模糊预测制导
Edge of Earth＇ s atmosphere
Hypersonic
Adjustment for re-entry position
I-PIDA based on neuralnetwork
Fuzzy predictive guidance
