锥体弹头的嵌入式大气数据传感系统组合算法  

Combinatorial algorithm of flush air data sensing system for cone forebodies

作　　者：张勇 肖前贵[1] 陆宇平[2] 肖地波[3] 

机构地区：[1]南京航空航天大学无人机研究院,江苏南京210016 [2]南京航空航天大学自动化学院,江苏南京210016 [3]南京航空航天大学航天学院,江苏南京210016

出　　处：《传感器与微系统》2014年第10期148-150,154,共4页Transducer and Microsystem Technologies

基　　金：江苏省自然科学基金资助项目(BK20130817);南京航空航天大学基本科研业务费资助项目(NS2014404)

摘　　要：嵌入式大气数据传感(FADS)系统空气动力学模型基于钝头体推导,该模型适用于锥头体解算大气数据,但存在一定的模型误差。为消除模型误差,分析了锥头体模型误差产生的机理,提出了一种FADS系统组合算法,并对某一典型锥体弹头进行了仿真验证。仿真结果表明:动静压相对误差在0.05%以内,每组大气数据解算平均耗时在20ms以内,该算法有效提高了大气数据解算精度和实时性。The aerodynamic model of flush air data sensing （FADS） system, which is derived from blunt forebodies,is suitable for cone forebodies, however, the model error is subsistent when the aerodynamic model is applied to cone forebodies. To eliminate model error,the mechanism of cone forebody model error is analyzed and a suit of combinatorial algorithm for FADS is proposed,the corresponding validation of simulation is accomplished for a typical cone forebody. Simulation results show that relative errors of dynamic pressure and static pressure are less than 0.05 % and average resolving time consuming of a set of air data is less than 20 ms, respectively, thus solving precision and real-time performance are improved effectively by the algorithm.

关 键 词：嵌入式大气数据传感系统 锥头体 模型误差 组合算法 

分 类 号：V241.6[航空宇航科学与技术—飞行器设计]