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A unified approach to output synchronization of heterogeneous multi-agent systems via L2-gain design

Control Theory and Technology 2017年第4期15卷 340-353页

作者： Shan Zuo Yongduan Song Hamidreza Modares Frank L. Lewis ali davoudi School of Automation Engineering University of Electronic Science and Technology of China Chengdu Sichuan China The University of Texas at Arlington Research Institute Fort Worth U.S.A.

In this paper, a unified design procedure is given for output synchronization of heterogeneous multi-agent systems （MAS） on communication graph topologies, using relative output measurements from neighbors. Three different control protocols, namely, full-state feedback, static output-feedback, and dynamic output-feedback, are designed for output synchronization. It is seen that a unified design procedure for heterogeneous MAS can be given by formulation and solution of a suitable local L2-gain design problem. Sufficient conditions are developed in terms of stabilizing the local agents＇ dynamics, satisfying a certain small-gain criterion, and solving the output regulator equations. Local design procedures are presented for each agent to guarantee that these sufficient conditions are satisfied. The proposed control protocols require only one copy of the leader＇s dynamics in the compensator, regardless of the dimensions of the outputs. This results in lower-dimensional compensators for systems with high-order outputs, compared to the p-copy internal model approach. All three proposed control protocols are verified using numerical simulations.

关键词： Heterogeneous systems output-feedback output synchronization small-gain theorem

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Road traffic crashes in rural setting： an experience of a middle-income country

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Chinese Journal of Traumatology 2014年第6期17卷 327-330页

作者： ali davoudi-Kiakalayeh Reza Mohammadi Shahrokh Yousefzade-Chabok Sohiel Saadat Division of Social Medicine Department of Public Health Sciences Karolinska Institutet Tomtebodavagen 18A SE-17176 Stockholm Sweden Guilan Road Trauma Research Center Guilan University of Medical Science Rasht Iran Sina Trauma and Surgery Research Center Tehran University of Medical Sciences Iran

Objective： To date, there has been little information published on the death of rural road accident deaths. This study uses burden of injury method to explore a more accurate estimate of years of life lost due to road traffic crashes occurring over a four-year period in Guilan province, northern Iran. Methods： Rural road accident deaths from 2009 to 2013 were extracted from Iran＇s Forensic Medicine System, Death Registry System and Road Trauma Research center database. Results： During the study period, the average years of life lost due to motor vehicle crashes was 13.8 per 1 000 persons, ranging from 11.9 during March 2011- 2012 to 15.8 per 1 000 persons during March 2012-2013. Conclusion： Road accident deaths in 2013 remained at the same high level as in 2009. The information obtained from this study provides a new perspective on fatal road traffic crash victims in rural settings and show us that more attention is needed in this area.

关键词： Accidents, traffic Iran Mortality

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Optimal DG Placement in Distribution Networks Using Intelligent Systems

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Energy and Power Engineering 2012年第2期4卷 92-98页

作者： ali Aref Mohsen davoudi Farzad Razavi Majid Davoodi Department of Electrical Engineering Hidaj Branch Islamic Azad University Hidaj Iran Department of Electrical Engineering Qazvin Branch Islamic Azad University Qazvin Iran Department of Electrical Engineering Takestan Branch Islamic Azad University Takestan Iran

Distributed Generation (DG) unlike centralized electrical generation aims to generate electrical energy on small scale as near as possible to the load centers, interchanging electric power with the network. Moreover, DGs influence distribution system parameters such as reliability, loss reduction and efficiency while they are highly dependent on their situation in the distribution network. This paper focuses on optimal placement and estimation of DG capacity for installation and takes more number of significant parameters into account compare to the previous studies which consider just a few parameters for their optimization algorithms. Using a proposed optimal Genetic Algorithm, a destination function that includes the cost parameters (such as loss reduction, fuel price, etc.) has been optimized. This method is also capable of changing the weights of each cost parameter in the destination function of the Genetic Algorithm and the matrix of coefficients in the DIGSILENT environment. It has been applied and simulated on a sample IEEE 13-bus network. The obtained results show that any change in the weight of each parameter in the destination function of the Genetic Algorithm and in the matrix of coefficients leads to a meaningful change in the location and capacity of the prospective DG in the distribution network.

关键词： Distributed Generation (DG) Distribution Network Optimization Genetic Algorithm

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Mitochondrial DNA sequence diversity in three ethnic populations from the South-west Iran:a preliminary study

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Frontiers in Biology 2011年第5期6卷 422-432页

作者： Elham davoudi-DEHAGHANI ali Mohammad FOROUGHMAND Babak SAFFARI Massoud HOUSHMAND Hamid GALEHDARI Mehdi SHAFA SHARIAT PANAHI Majid YAVARIAN Mohammad Hossein SANATI Somayeh TORFI Department of Genetics Shahid Chamran UniversityAhvaz 61357-43337Iran Medical Genetics Department Tehran University of Medical SciencesTehran 14155-6447Iran Human Genetic Research Group Iranian Academic Center for EducationCulture&Research(ACECR)Fars Province BranchShiraz 71347Iran National Institute for Genetic Engineering and Biotechnology Tehran 14155-6343Iran Hematology Research Center School of MedicineShiraz University of Medical SciencesShiraz 71937Iran

To investigate the genetic structure of human populations in the South-west region of Iran,mitochondrial first hypervariable DNA sequences were obtained from 50 individuals representing three different ethnic groups from Khuzestan *** groups were Shushtari Persians and Chahar Lang Bakhtiyaries from Indo-Europeanspeaking populations and Bani Torof Arabs from Semitic-speaking linguistic *** analysis of mtDNA data showed high similarity of Chahar Lang Bakhtiyaries with other Iranian Indo-European-speaking populations while Shushtaries and Bani Torofs had a closer affinity with Semitic-speaking groups rather than to other Iranian *** relationship of Chahar Lang Bakhtiyaries and Bani Torof Arabs with their neighbor populations can be explained by linguistic and geographic ***,the greater similarity of Shushtari Persians with West Asian Arabs is probably according to high gene flow between *** article represents a preliminary study of three major ethnic groups of South-west Iran which investigates the potential genetic substructure of the region.

关键词： diversity mitochondrial DNA first hypervariable sequence Iran genetic structure population

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Optimal DG Placement in Distribution Networks Using Intelligent Systems

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Energy and Power Engineering（能源与动力工程） 2012年第2期

作者： ali Aref Mohsen davoudi Farzad Razavi Majid Davoodi

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