基于xPC的三轴仿真转台模型辨识方法研究  

Modeling of Three Axis Simulator Based on xPC Target

作　　者：赵斌[1] 周军[1] 卢晓东[1] 

机构地区：[1]西北工业大学精确制导与控制研究所,西安710072

出　　处：《系统仿真学报》2011年第2期284-287,315,共5页Journal of System Simulation

基　　金：航天科工支撑基金(2009CASIC0304)

摘　　要：从实验设计,输入信号分析以及模型验证三个方面全面进行三轴仿真转台模型辨识研究。基于xPC实时系统和反射内存实时网络设计转台模型辨识试验,用谱分析方法研究输入信号特性,采用AIC准则和广义最小二乘法实现对转台模型的辨识,最后采用统计方法和最大熵谱估计方法对所得模型进行验证。结果表明,所辨识的转台内环控制系统模型可信度较高,可以用于半实物仿真的误差评估。To satisfy the requirement of error evaluation in Hardware-In-Loop Simulation of missile,the modeling of three axis simulator was studied.First,experiment environment based xPC target and fiber-optic reflective memory was designed,second,the excitation signal was analyzed and selected by spectrum analysis,third,the generalized least square method was used to identify model of the three axis simulator,in the end,the model was verified by MESA.The result proves the model identified is trustworthy and can be used in the inaccuracy analysis in Hardware-In-Loop Simulation.

关 键 词：XPC 反射内存 三轴转台 最大熵谱估计 AIC准则 广义最小二乘法 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]