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In this paper, a second-order sliding mode control (2-SMC) scheme, called twisting algorithm, is applied to control an electrostatically actuated 2D torsional MEMS micromirror. The proposed twisting algorithm is able to improve the transient and positioning performance of the controlled 2D micromirror including robustness against model uncertainties and external disturbances. The main advantages of...
Using Cluster four spacecraft data, we have made a statistical research on the motion properties of the magnetotail current sheets of the year 2004 and 2005 with various methods. We find that most of the current sheets are propagating from the midnight tail region to dawn and dusk flanks which is consistent with previous studies. Most of the current sheets are propagating with the velocities smaller...
In this work, we propose a two-dimensional model of opinion dynamics, in which two agents are neighbors if one of their opinion values is within a confident level. We present elementary consensus analysis that reveals the basic characteristics. The consensus threshold under uniform probability distribution is analyzed by means of numerical simulations. Comparison is made between the model and the...
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