一种基于水平精对准的阻尼网络设计

摘要

研究惯性导航中惯性阻尼器优化设计,在惯导阻尼研究中,针对惯导系统传统阻尼系统存在阻尼网络设计复杂、振荡性误差收敛速度较慢及状态切换产生较大超调误差等问题,为改善阻尼网络效果,提出一种采用初始水平精对准网络的阻尼方案,通过合理设计可调参数进行仿真设计,仿真验证了研究提出的阻尼网络的可行性.仿真结果表明,改进网络能够有效抑制舒拉振荡误差的影响,收敛速度较传统阻尼方法有较大提升,并使网络设计大为简化.同时,改进方法通过引入前馈可调回路,能够快速而有效地抑制无阻尼状态向阻尼状态切换时的超调误差.%In order to address the problems of the complex design, slowly convergent speed and great overshoot errors for the traditional damping network, a damping network based on fine horizontal alignment was proposed, in which the acceleration information was used in the level correction loops for damping the Schuler oscillation errors with rational design of an adjustable parameter. Test results of simulation have verified the above—mentioned advantages. The result of simulating indicates that, compared with the traditional method, the proposed method can accelerate the convergent rate and simplify the network design. Moreover, the overshoot errors produced by state switch from non-damping to damping can be remarkably reduced through the introduction of a feed-forward adjustable loop with a proportion factor.