摘要
以战术级光纤陀螺(FOG,Fiber-Optic Gyro)惯性测量组合(IMU,Inertial Measurement Unit)为研究对象,分析了环境温度与其测量精度的关系.为抑制外界温度对IMU的干扰,提出了一种实用的IMU温度控制方法,即根据IMU的热分析与仿真,优化温度控制方案和控制算法,并依此方法为IMU设计了基于模糊PID(Proportion Integration Differentiation)算法的数字式温控系统,研究了有温控和无温控对陀螺和加速度计测量精度的影响.试验表明,对IMU进行精密温控,改善了惯性器件的热环境,有助于提高IMU的综合性能.
Referring to the object of tactical FOG （fiber-optic gyro） IMU （inertial measurement unit）, the relationship between the environmental temperature and its measurement accuracy was analyzed. An applied temperature control method was put forward to bate the interference of external temperature on IMU. It optimizes temperature control scheme and control algorithm, which are based on thermal analysis and simulation. And according to it, a digital temperature control system based on fuzzy PID （proportion integration differentiation） algorithm was designed for IMU. Influence to the precision of gyros and accelerometers when without temperature control and with temperature control was respectively studied. The results of experimentation indicate precision temperature control to ameliorate inertial parts＇ thermal condition could favor to improve the performance of IMU.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2007年第6期694-697,共4页
Journal of Beijing University of Aeronautics and Astronautics
关键词
惯性
导航系统
光纤
陀螺仪
热仿真
温度控制
模糊PID
inertial
navigation systems
fiber optic
gyro
thermal simulation
temperature control
fuzzy PID
