哈尔滨工程大学学报Issue(12)：1578-1583,6.DOI:10.11990/jheu.201407077
基于力状态映射法的航天器非线性铰链参数辨识
Parameter identification of nonlinear joints in spacecraft by force-state mapping
摘要
Abstract
For dynamics modeling of complex nonlinear joints in spacecraft deployable mechanisms, multiple linear and nonlinear dynamic parameters of the joints at the root of solar arrays, and between solar arrays in spacecraft, are identified with the force-state mapping method.Both joint types have complex nonlinear dynamic properties.The differential equations describing the nonlinear dynamic models of such joints are derived.Based on the real force state of joints, a test system is developed to investigate the vibration response of complex nonlinear joints of space-craft so as to acquire necessary test data.The relationship between moment and bending angle, under various fre-quencies and excitation forces, is obtained for joints at the root of solar arrays and between solar arrays in real spacecraft.The parameters identified in this paper reflect the nonlinear stiffness, friction and damping characteris-tics of real joints.The dynamic models established by these parameters can describe multiple linear and nonlinear dynamic properties of joints, and it can be used to entire system modeling and control of spacecraft.The parameters identified in this paper reflect the nonlinear stiffness, friction and damping characteristics of real joints.The dynam-ic models established by these parameter scan describe multiple linear and nonlinear dynamic properties of joints, and it can be applied to entire system modeling and control of spacecraft.关键词
航天器/铰链/力状态映射法/参数辨识/非线性动力学Key words
spacecraft/joints/force-state mapping/parameter identification/nonlinear dynamics分类
通用工业技术引用本文复制引用
吴爽,赵寿根,吴大方,罗敏..基于力状态映射法的航天器非线性铰链参数辨识[J].哈尔滨工程大学学报,2015,(12):1578-1583,6.基金项目
国家自然科学基金资助项目（11172026）；高等学校博士学科点专项科研基金资助项目（20131102110014）． （）
