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Global output‐feedback stabilization for a class of stochastic nonlinear systems via sampled‐data control 下载免费PDF全文
In this paper, the global sampled‐data output‐feedback stabilization problem is considered for a class of stochastic nonlinear systems. First, based on output‐feedback domination technique and emulation approach, a systematic design procedure for sampled‐data output‐feedback controller is proposed for a class of stochastic lower‐triangular nonlinear systems. It is proved that the proposed sampled‐data output‐feedback controller will stabilize the given stochastic nonlinear system in the sense of mean square exponential stability. Because of the domination nature of the proposed control approach, it is shown that the proposed control approach can also be used to handle the global sampled‐data output‐feedback stabilization problems for a more general class of stochastic non‐triangular nonlinear systems. Finally, simulation examples are given to demonstrate the effectiveness of the proposed method. Copyright © 2017 John Wiley & Sons, Ltd. 相似文献
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Park Jong Tae Nah Jae Wook Lee Wee Hyuk 《Dependable and Secure Computing, IEEE Transactions on》2008,5(3):143-154
Most previous research on MPLS/GMPLS recovery management has focused on efficient routing or signaling methods from single failures. However, multiple simultaneous failures may occur in large-scale complex virtual paths of MPLS/GMPLS networks. In this paper, we present a dynamic MPLS/GMPLS path management strategy in which the path recovery mechanism can rapidly find an optimal backup path which satisfies the resilience constraints under multiple link failure occurrences. We derived the conditions to test the existence of resilience-guaranteed backup path, and developed a decomposition theorem and backup path construction algorithm for the fast restoration of resilience-guaranteed backup paths, for the primary path with an arbitrary configuration. Finally, simulation results are presented to evaluate the performance of the proposed approach. 相似文献
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Kinematic Design of Modular Reconfigurable In-Parallel Robots 总被引:1,自引:0,他引:1
This paper describes the kinematic design issues of a modular reconfigurable parallel robot. Two types of robot modules, the fixed-dimension joint modules and the variable dimension link modules that can be custom-designed rapidly, are used to facilitate the complex design effort. Module selection and robot configuration enumeration are discussed. The kinematic analysis of modular parallel robots is based on a local frame representation of the Product-Of-Exponentials (POE) formula. Forward displacement analysis algorithms and a workspace visualization scheme are presented for a class of three-legged modular parallel robots. Two three-legged reconfigurable parallel robot configurations are actually built according to the proposed design procedure. 相似文献
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We propose an adaptive and energy-efficient TDMA-based MAC protocol that significantly reduces energy consumption in the network, while efficiently handling network traffic load variations and optimizing channel utilization through a timeslot stealing mechanism and a timeslot reassignment procedure. We have analytically derived the average delay performance of our MAC protocol, with and without the timeslot stealing mechanism. Our delay model, validated via simulations, shows that the timeslot stealing mechanism can substantially improve the protocol throughput in scenarios with varying and asymmetric traffic patterns. Evaluation results show that the timeslot reassignment procedure is efficient in handling the longer timescale changes in the traffic load, while the timeslot stealing mechanism is better in handling the shorter timescale changes in the traffic patterns. 相似文献
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B2O3对CaO基渣精炼的助熔作用和脱硫的影响 总被引:2,自引:2,他引:2
使用RTW-08熔体物性测定仪通过旋转粘度计法测定了熔渣的粘度.试验结果表明,B2O3和CaF2在46%CaO-10%BaO-11.2%SiO2-11.6%Al2O3基础渣系中的助熔效果相当;在CaO-SiO2-10%BaO-11.6%Al2O3-10%CaF2基渣的碱度(CaO+BaO)/(SiO2+B2O3)为2.5和2.8时,用B2O3替代1/4 SiO2后精炼渣高温熔化性能稳定,粘度值降低至0.3~0.5 Pa·s;碱度2.8时,含20.6%SiO2渣剂的脱硫率为85%(S含量由0.008%降至0.001 6%),而含10.3%SiO2-10.3%B2O3渣剂的脱硫率为91.3%(S含量由0.008%降至0.000 7%). 相似文献
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Satoshi Izumi Chan Wee Ping Shinsuke Sakai Atsushi Suzuki 《Engineering Fracture Mechanics》2005,72(17):2672-2685
Specimens and fracture test methods for strength analysis of MEMS micromirrors were proposed. Bending and combined loading tests were performed, and torsion strength was estimated from those results. Two-parameter Weibull distribution was used to evaluate the fracture stresses estimated from the FEM model. The resulting scale and shape parameters were 787 MPa and 7.77 for the bending test and 517 MPa and 5.28 for the combined loading test. There was a difference in strength between the results of the bending and combined loading tests. From the load factor analysis, it was found that both geometry and stress distribution have to be considered to estimate the strength of MEMS since flaws are non-uniformly distributed. It was also found that torsional strength can be estimated on the safe side using the results of the combined loading test. 相似文献