惯性导航系统水平阻尼网络的自适应控制

Adaptive Control of INS Level Damp Network

当海况变化较大时,惯性导航系统(INS)的误差振荡幅度较大.为了减小系统误差的振荡幅度,提出了一种新的设计思想,采用自适应控制方法,根据实际的海况变化情况,实时校正阻尼参数,使由舰船的机动性造成的系统误差最小. 结果表明,与传统方法相比,水平误差角振荡幅度减小了约 5000,速度误差振荡幅度减小了约 3000,经度、纬度和航向误差振荡幅度也有明显改善;水平阻尼网络的自适应控制有效地改善了INS的动态性能.

The inertial navigation system(INS)error caused by sea current and log error greatly oscillates.To restrain the oscillation,an adaptive control method is presented in this paper.The damp parameter is adjusted real time with the change of sea current.The simulation results show that the proposed method can decrease about(50~0_0) of level angle error oscillation,and about 30~0_0 of velocity error oscillation, compared with traditional method.In a word,this method is effective on improving the INS dynamic performance.