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加值矩阵对平面含复铰运动链描述与同构判定 被引量:4
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作者 周豪 孔建益 +1 位作者 孙亮波 肖曲 《机械科学与技术》 CSCD 北大核心 2018年第5期657-662,共6页
针对机构综合和优化的同构判定问题,分析含复合铰链的运动链的构成元素,提出一种区分运动链元素的加值矩阵的方法,从而有效描述运动链中的复铰和构件等信息。结果表明:加值矩阵对单铰和复铰的运动链有着相同的构建思路,相较于传统的顶... 针对机构综合和优化的同构判定问题,分析含复合铰链的运动链的构成元素,提出一种区分运动链元素的加值矩阵的方法,从而有效描述运动链中的复铰和构件等信息。结果表明:加值矩阵对单铰和复铰的运动链有着相同的构建思路,相较于传统的顶点邻接矩阵和转化邻接矩阵有着信息多和简易构建等特点;利用计算机计算加值矩阵的特征值及特征向量就可以进行运动链的同构判定,这种方法具有准确简单的特点;加值矩阵为描述各种类型的运动链提供了一种快速高效的途径。 展开更多
关键词 运动链 加值矩阵 复合铰链 同构判定
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Simultaneous (M,N) Singular Value Decomposition of Matrices
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作者 刘晓冀 《Northeastern Mathematical Journal》 CSCD 2007年第6期471-478,共8页
A necessary and sufficient condition for the existence of simultaneous (M,N)singular value decomposition of matrices is given.Some properties about the weighted partial ordering are discussed with the help of the deco... A necessary and sufficient condition for the existence of simultaneous (M,N)singular value decomposition of matrices is given.Some properties about the weighted partial ordering are discussed with the help of the decomposition. 展开更多
关键词 simultaneous (M N) singular value decomposition weighted general-ized inverse weighted star-partial ordering
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On Stabilization of It Stochastic Time-Varying Systems 被引量:1
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作者 GAO Rong ZHANG Huanshui 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2017年第4期818-827,共10页
The stabilization with receding horizon control (RHC) of It5 stochastic time-varying systems is studied in this paper. Based on monotonically non-increasing of optimal cost and stochastic Lyapunov stability theory, ... The stabilization with receding horizon control (RHC) of It5 stochastic time-varying systems is studied in this paper. Based on monotonically non-increasing of optimal cost and stochastic Lyapunov stability theory, a necessary and sufficient stabilization condition on the terminal weighting matrix is proposed, which guarantees the mean-square stability of the closed-loop system. The explicit receding horizon controller is obtained by employing stochastic maximum principle. Simulations demonstrate the effectiveness of the proposed method. 展开更多
关键词 Mean-square stability receding horizon control stochastic time-varying system.
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