排序方式: 共有16条查询结果,搜索用时 593 毫秒
11.
Yong-Chao Liu Salah Laghrouche Daniel Depernet Abdoul N'Diaye Abdesslem Djerdir Maurizio Cirrincione 《Asian journal of control》2024,26(3):1089-1102
To address the robust speed control problem of the surface-mounted permanent-magnet synchronous motor (SPMSM) drive, a novel composite speed controller (CSC) is proposed, which consists of the modified super-twisting sliding-mode SC (STSM-SC) and the extended state observer (ESO). Regarding the motion dynamics of the SPMSM drive, the unmodeled dynamics, endogenous, and exogenous disturbances are lumped together as the total disturbance. The ESO-based feedforward compensation mechanism is used to deal with the total disturbance for the robustness improvement of the speed control achieved by the modified STSM-SC-based feedback regulation mechanism. On the basis of the field-oriented control strategy, performance comparisons of the standard STSM-SC, the ESO-based standard STSM-SC, the modified STSM-SC, and the proposed CSC are carried out on a suitably developed experimental setup. The experimental results are presented to validate the superiority of the proposed CSC. 相似文献
12.
Characterization of natural Yemeni zeolites as powder sorbents for ammonium valorization from domestic waste water streams using high rate activated sludge processes
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13.
Abdesslem F.B. Ziviani A. de Amorim M.D. Todorova P. 《Communications Letters, IEEE》2007,11(8):653-655
We propose a new budget-based clustering algorithm for self-organizing networks. The basic idea behind our solution is that nodes first sense the environment using inherent Hello packets before starting forming clusters. In contrast with previous solutions that blindly distribute the budget to nearby nodes, our potential-based clustering algorithm applies a proportional budget distribution based on the connectivity degree of the nodes. This approach matches the principle that nodes in real networks are not uniformly distributed. Our simulation results show that the proposed approach outperforms previous ones. 相似文献
14.
AbstractIn this paper, the capacitated location-routing problem (CLRP) is studied. CLRP is composed of two hard optimisation problems: the facility location problem and the vehicle routing problem. The objective of CLRP is to determine the best location of multiple depots with their vehicle routes such that the total cost of the solution is minimal. To solve this problem, we propose a greedy randomised adaptive search procedure. The proposed method is based on a new heuristic to construct a feasible CLRP solution, and then a local search-based simulated annealing is used as improvement phase. We have used a new technique to construct the clusters around the depots. To prove the effectiveness of our algorithm, several LRP instances are used. The results found are very encouraging. 相似文献
15.
Fodorean D. Djerdir A. Viorel I.-A. Miraoui A. 《Energy Conversion, IEEE Transaction on》2007,22(3):656-665
This paper presents the analytical, numerical, and experimental results obtained with a double excited synchronous machine (DESM) prototype designed and constructed for an electric vehicle traction system. To obtain a wide speed range, the flux-weakening technique is implemented. Analytical design, 2-D finite element method (FEM) analysis, thermal analysis, and prototype construction of the DESM are discussed, and the performances are assessed with experimental data. 相似文献
16.
Goncalves Rubinstein M. Abdesslem F.B. Dias De Amorim M. Rodrigues Cavalcanti S. Dos Santos Alves R. Maciel Kosmalski Costa L.H. Muniz Bandeira Duarte O.C. Mitre Campista M.E. 《Communications Magazine, IEEE》2009,47(11):128-136
A particular class of vehicular networks is the one that includes off-the-shelf end-user equipment (e.g., laptops and PDAs) running from the interior of vehicles: in-car nodes. They are subject to limited communication conditions when compared with nodes specifically designed to this context. Existing works either consider antennas installed on top of the vehicle roof or nodes that operate in infrastructure mode. In this article, we investigate through real experiments the characteristics of links formed by incar nodes running off-the-shelf wireless technologies such as IEEE 802.11(a/g) in ad hoc mode. We surprisingly observe that in-car nodes do show enough performance in terms of network capacity to be used in a number of applications, such as file transfer in peer-to-peer applications. Nonetheless, we identify some key performance issues and devise a number of configuration recommendations and future work directions. 相似文献