三轴平台快速自标定与自对准方法探讨

为了提高地地导弹的作战效能,探讨了适应机动发射导弹快速发射要求的三轴平台快速自标定与自对准技术。误差标定及补偿是提高惯性系统使用精度的重要手段,但标定的完善性与快速性之间存在矛盾。误差标定及方位对准采用导弹水平状态七位置一体化方案,在约13.6分钟内能自主对准并标定出平台二十一项系数。导弹水平状态标定与对准可以基本消除阵风干扰的影响,且陀螺仪标度因数与漂移的估计采用有参考力矩的零力矩法,保证了标定、对准的快速性与准确性。经仿真验证,测量时间为1分钟时,漂移率估计误差在0.003°/h以内,测量时间为2分钟时估计误差在0.001°/h以内。

Research on Rapid Auto-Calibration and Auto-Alignment Method for Three-Axis Platform

To improve the operation effectiveness of ground-to-ground missile,the rapid auto-calibration and auto-alignment method for three-axis platform is presented to satisfy the fast launching demand for mobile missile.Error calibration and compensation is an important means for increasing the practical precision of inertial systems.But there existed a contradiction between perfection and rapidity to solve.An integral scheme with 7 positions when the missile is in horizontality is adopted to calibrate the errors and align,which can auto-align and calibrate 21 errors within about 13.6 minutes.The effect of gust disturbance can be mostly canceled when the missile is in horizontality,and the zero torque method with reference torque is adopted to calibrate the scale factors and drift rates of level gyros,which can ensure the rapidity and the precision.The drift rates estimating error is within(0.003/h) when the measure time is 1 minute and is within 0.001/h when the measure time is 2 minutes by simulation.