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The effect of axial stiffness of mooring lines on the horizontal motion of FDPSO

Science China(Physics,Mechanics & Astronomy) 2011年第1期54卷 10-15页

作者： WEI YueFeng YANG JianMin CHEN Gang HU ZhiQiang State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai 200240 China

FDPSO is a multifunction floating platform,which has the integral function of drilling,production,storage and offloading.A spread mooring system is adopted to position the *** coupled analysis in time domain for FDPSO system is conducted in the present paper,using the code *** effect of axial stiffness of the mooring line on the horizontal motion of FDPSO is studied by employing five types of different axial stiffness in the calculation of the motion response of FDPSO ***,the results of a model test conducted in the State Key Laboratory of Ocean Engineering in Shanghai Jiao Tong University are used to investigate the feasibility of the numerical method.

关键词： FDPSO motion performance mooring lines axial stiffness

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Analysis of the performance of Rolling Screw Transform Mechanism

Analysis of the Performance of Rolling Screw Transform Mecha...

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2012年计算机应用与系统建模国际会议

作者： Zheng Bo Liu Yuanyong Qu Qingwen Shandong Provincial Key Laboratory of Precision Manufacturing and Non-traditional Machining Shandong University of Technology

According to the basic principle of the Screw-driven, a new mechanism named rolling screw transform mechanism is designed in this paper, which is input straight reciprocating motion and output rotation. The motion performance and of the mechanism is analyzed, the motion equations, such as displacement, velocity, acceleration, are established. Simulation is present with numerical method, the changing laws of displacement, velocity, acceleration are found based on the simulation curve. The surface numerical model is established, the transmission performance is obtained by analysis.

关键词： Screw-driven Rolling screw transform mechanism motion performance Transmission performanc

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Multi-Agent Formation Adjustment under Flocking Control Algorithms with Expected Topological Matrices

Multi-Agent Formation Adjustment under Flocking Control Algo...

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第40届中国控制会议

作者： Debin Zeng Jun Zhou Xibiao Lu Huimin Qian School of Energy and Electrical Engineering Hohai University

In this technical note, we briefly explain a multi-agent flocking control algorithm, which can be used to configure multi-agent position/motion/trajectory features in a multi-agent system with second-order particles by adjusting what we call the expected matrices. More specifically, by extending the Olfati-Saber’s flocking algorithm additionally with the expected position/motion/trajectory matrices, some topological features and control performances can be adjusted to certain degree while flocking is achieved in the multi-agent system. The suggested algorithm possesses the following advantages: forming more general quasi-lattice（rather than merely equitable lattices）, configuring network topology during flocking, and adjusting motion performances. Numerical simulations clearly demonstrate the effectiveness of the proposed algorithm.

关键词： multi-agent flocking position topology motion performance potential function expected matrix

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