Research on North-Seeking Based on Dual FOGs and Virtual Inertial Instruments
North-seeking system based on dual FOGs and virtual inertial instrument is put forward in this paper. According to the practical engineering background,two dynamic restriction assumptions are satisfied nearly by means of analyzing and actual measurement.So the gyroscope and accelerometer of up direction in normal system can be replaced by virtual inertial instruments.Thereby the cost and the volume of system are reduced.In accordance with the dynamic restriction of vehicle,the equivalent output expression of virtual gyroscope and virtual accelerometer has been presented.Then a Kalman filter was designed for initial alignment in accordance with the error equation of initial alignment on static base. Ultimately,the experiment concerned on north-seeking at the real working condition is given.Experiment results show that,at the condition of vehicle dynamic restriction,fine north seeking result can be realized based on two horizontal gyroscopes and accelerometers by the way of adopting virtual up direction gyroscope and accelerometer.
North Seeking Virtual Inertial Instruments Fiber-Optic Gyroscope (FOG) Dynamic Restriction.
Juliang Cao Meiping Wu Wenqi Wu Jian Li
School of Mechatronics and Automation National University of Defense Technology Changsha Hunan,China 410073
国际会议
2008 IEEE International Conference on Onformation and Automation(IEEE 信息与自动化国际会议)
张家界
英文
859-862
2008-06-20（万方平台首次上网日期，不代表论文的发表时间）