摘要
旋转火箭弹高速自旋的特点限制了传统惯性导航系统在旋转弹上的应用,针对此问题研究了一种具有横滚隔离功能的捷联惯性导航系统。通过引入一个与自旋轴平行的隔离环可避免横滚轴向陀螺输出饱和,同时可极大的减少陀螺刻度系数误差及安装偏差引起的测量误差。着重研究了隔离环稳定回路的一种校正方案,通过采用超前滞后网络对横滚隔离光纤捷联惯导稳定回路进行校正。仿真结果表明稳定回路可有效跟踪阶跃信号,系统超调量小于30%,调节时间小于0.15s;在2N·m常值干扰力矩作用下,平台稳态偏差角为0.67′。该方案具有一定的工程实用价值。
It is difficult to apply a traditional inertial navigation system to spinning projectile because of high spin rate A new pattern of inertial navigation system was introduced which was called roll-isolated strap-down inertial navigation system （RISINS） and used in spinning projectile. Roll-isolation is accomplished by supporting the inertial instrument cluster （gyros and accelerometers） on a single gimbal, the axis of which is parallel to the projectile＇s spin axis. Roll-isolation prevents the saturation of the roll gyro by high spin rate, and this greatly reduces the measurement errors arising from gyro scale factor and alignment uncertainties. The correction scheme for stabilization loop was provided. The approach is called lead and lag correction which has been adopted to correct the stabilization loop of roll-isolated fiber optical gyro strap-down inertial navigation system （RIFOGSINS）. The simulation results show that the system can eliminate the disturbance effectively, and precisely follow the step reference angle velocity. Thus, it is an excellent method for RIFOGSINS stabilization loop.
出处
《中国惯性技术学报》
EI
CSCD
北大核心
2009年第4期383-387,共5页
Journal of Chinese Inertial Technology
基金
国防科技预研项目(51309060401)
关键词
旋转弹
横滚隔离
光纤捷联惯导
稳定回路
校正网络
spinning projectile
roll-isolated
FOGSINS
stabilization loop
correction network
