摘要
五轴转台误差对半实物仿真精度具有直接影响。分析五轴转台误差及对半实物仿真的影响机理,提出五轴转台误差的评价参数。基于五轴转台的拓扑结构,采用特征矩阵描述转台误差传递,建立了五轴转台误差模型。基于所建立的模型分析了误差对评价参数的影响,结果表明指向误差主要受垂直度、倾角回转误差及转角的影响;位置误差受各误差的综合影响,其中相交度和位移回转误差影响最大;目标误差受相交度和同轴度影响较显著。误差模型和分析结果可用于转台设计误差分配和半实物仿真系统误差分析。
Errors are considered as important factors in design and manufacture of five-axis turntable, which also cause accuracy reduction in hardware-in-loop simulation. The components of errors were analyzed, and the mechanism of impact of errors on simulation were studied. In order to express relations between errors and simulation, three parameters were proposed. Base on the analysis of five-axis turntable＇ s structure, the errors＇ transfer relations and topological structure of five-axis turntable were described used lower-numbered arrays, resorted to muhi-body theory. The influences on hardware-in-loop simulation system by five-axis turntable＇ s errors were described by error eignmatrix. The impacts of five-axis turntable＇ s errors on angles and positions of seeker fixed on turntable, also the errors of simulated target were built. The errors model has been built can be used to distribute errors reasonably, also can be used to analyze errors of hard-in-loop simulation system of image guidance.
出处
《机电工程技术》
2017年第11期44-48,84,共6页
Mechanical & Electrical Engineering Technology
关键词
五轴转台
多体系统理论
误差建模
半实物仿真
five-axis turntable
multi-body system theory
errors modeling
hardware-in-loop simulation
