摘要
三轴转台用于惯导设备的测试,工作精度是其关键性能指标之一,为提高三轴转台标定的工作精度要求,分析了三轴转台各项误差项对其精度的影响程度。基于多体系统理论以及坐标系变换理论,结合三轴转台的运动特点以及拓扑结构图,建立了三轴转台误差传递的数学模型。在此基础上,利用函数全微分理论提出了三轴转台误差灵敏度的分析方法,建立了三轴转台误差灵敏度分析模型,通过软件计算分析,得到了影响三轴转台精度的关键性误差源,为三轴转台的误差设计以及误差分配奠定了理论基础。
Three-axis turntable can be used to test inertial measurement equipment and working precision is one of the key performance indicators.In order to improve working precision of three-axis turntable, influence degree of error source on precision of three-axis turntable is analysed. Based on multi-system theory and coordinate system transformation theory, mathematical model of error propagation is set up combining movement characteristics and topological structure of three-axis turntable. On this foundation, error sensitivity analysis model of three-axis turntable is set up on the base of complete differential-coefficient theory. Error source can be obtained which has a larger influence to precision of three-axis turntable through calculation and analysis with software. This aims at establishing the theoretical foundation for the error designing and distribution.
作者
童鹏飞
岳义
韦宝琛
赵现朝
TONG Pengfei;YUE Yi;WEI Baochen;ZHAO Xianchao(State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Aerospace Equipment Manufacturer Co.Ltd,Shanghai 201100,China)
出处
《机械设计与研究》
CSCD
北大核心
2020年第4期108-112,117,共6页
Machine Design And Research
基金
国家自然科学基金项目(51905337)
“十三五”装备预研共用技术(41417080301)。
关键词
三轴转台
多体系统理论
误差建模
灵敏度分析
three-axis turntable
multi-system theory
error modelling
sensitivity analysis
