柔性变胞机构动力学建模及仿真研究  

Research on dynamic model and simulation of flexible metamorphic mechanism

作　　者：金国光[1,2] 贠今天[1,2] 杨世明[1,2] 李东福[1] 

机构地区：[1]天津工业大学机械电子学院,天津300160 [2]天津市现代机电装备技术重点实验室,天津300160

出　　处：《华中科技大学学报（自然科学版）》2008年第11期76-79,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50675154);教育部科学技术研究重点资助项目(205012)

摘　　要：基于柔性变胞机构由于特殊的结构和运动形式,其动力学方程是非线性的,基于第一类拉格朗日方程,推导出柔性变胞机构任意构态柔性体的质量矩阵、刚度矩阵及广义主动力矩阵,建立柔性变胞机构任意构态的动力学控制方程,为实现对柔性变胞机构的精确控制打下基础;另外,根据杆件增加和减少两种情况下的构态变换矩阵推导出全构态柔性变胞机构的动力学模型.以4构态的柔性变胞机构为例,建立动力学方程并仿真验证所建立的全构态动力学模型的正确性和有效性.Because of special structure and dynamic behavior, the dynamic equations of flexible metamorphic mechanism （FMM） are nonlinear. Based on the first Lagrangian equations, the mass matrix, stiffness matrix and general force matrix of flexible member that are used for arbitrary configuration of FMM are educed. Dynamic equations of arbitrary configuration of FMM are established and this is the foundation to realize the precise controlling. According to the configuration changing matrixes of member increased and member decreased, the configuration-complete dynamic modeling of FMM is finally obtained. Dynamic equations of four configurations FMM are given to validate dynamic modeling of FMM.

关 键 词：柔性变胞机构 全构态 动力学模型 仿真 构态变换矩阵 非线性 

分 类 号：TH112[机械工程—机械设计及理论]