基于Simulink的高精度重力仪稳定平台水平误差仿真  

Simulation of horizontal error of Simulink-based gravimeter stable platform

作　　者：赵立业[1] 李宏生[1] 周百令[1] 李坤宇[1] 

机构地区：[1]东南大学仪器科学与工程学院,南京210096

出　　处：《中国惯性技术学报》2007年第2期147-150,共4页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金项目(60575010)资助

摘　　要：给出陀螺稳定平台水平误差的数学模型,然后介绍了Simulink的稳定平台水平误差建模方法,并建立了系统的Simulink仿真图形模型,对稳定平台水平误差及其引起的重力仪测量误差进行了仿真,并对仿真结果进行了分析。该仿真方法避免了求拉氏变换和拉氏反变换所带来的大量运算,不仅能保证误差分析的精度,而且使系统的误差分析过程变得容易、直观、迅捷。Simulink仿真表明,稳定平台不水平引起的重力仪测量误差为2.12mGal,远大于重力仪的设计误差0.5mGal。因此,必须补偿水平加速度引起的重力仪测量误差。The mathematic model of the horizontal error of gravimeter stable platform was described. The design of the simulation model with Simulink, and the Simulink graphic model for the horizontal error of gravimeter stable platform were created. The simulation result was given and analyzed. The method can overcome such disadvantages as the properties of complexity and the difficulty in traditional method of Laplace transform and Laplace inverse transform. By using this method, the error analysis of system becomes easy, visual and quick. The simulation results show that the gravimeter error caused by the horizontal error of platform is 2.12 mGal, which is much larger than the desizn error 0. 5 toga 1.

关 键 词：重力仪 陀螺稳定平台 系统误差 建模 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]