The Experts below are selected from a list of 2979 Experts worldwide ranked by ideXlab platform
L I Gangqiang - One of the best experts on this subject based on the ideXlab platform.
-
Warship formation air defense weapon target assignment based on gacr algorithm
Computer Simulation, 2009Co-Authors: L I GangqiangAbstract:Improving the efficiency of air defense weapon-target assignment of Warship formation is an urgent mission.Classical methods for solving NP hard problems usually result in exponential complexities,while some intelligent algorithms usually result in local optimum.For resolving the problem of Warship formation,a genetic ant algorithm based on crowding replacement is proposed.The genetic algorithm phase adopts crowding technique and changeable mutation operator to maintain multiple populations.So,the ant colony optimization phase can avoid getting into local optimization.An intensive study of how to use this algorithm in Warship weapon-target assignment is made.Results demonstrate that the improved algorithm achieves better efficiency than some classical optimization algorithms.
Norbert Doerry - One of the best experts on this subject based on the ideXlab platform.
-
history and the status of electric ship propulsion integrated power systems and future trends in the u s navy
Proceedings of the IEEE, 2015Co-Authors: Norbert Doerry, John V Amy, Cy KrolickAbstract:While electric propulsion for Warships has existed for nearly a century, it has only been since the end of the Cold War that modern integrated power systems have been developed and implemented on U.S. Navy Warships. The principal enablers have been the products of research and development for rotating machines (generators and propulsion motors), power electronics (power conversion and motor drives), energy storage, and controls. The U.S. Navy has implemented this advanced technology incrementally. Notably, DDG 1000 with its integrated propulsion system and CVN 78 with its electromagnetic aircraft launch system will soon join the fleet and mark another important advance to the electric Warship. In the future, the integration of electric weapons such as railguns, high power radars, and lasers will result in the final achievement of the electric Warship.
-
Specifications and standards for the electric Warship
2013 IEEE Electric Ship Technologies Symposium (ESTS), 2013Co-Authors: Norbert Doerry, K. MoniriAbstract:The U.S. Navy has invested considerable funds in the research and development of electrical power technologies for future electric Warships. One aspect of institutionalizing these technologies is the creation or modification of standards and specifications to incorporate the new technologies. This paper assesses the current state of standards and specifications in support of the design and construction of an all-electric naval Warship. These technical documents will be evaluated in terms of the different power systems architectures to include low voltage ac generation, medium voltage ac generation, medium voltage dc generation, and zonal power distribution. Ongoing standards activity, both in industry and in the Navy, are discussed. Finally, the paper presents recommendations for updating existing specifications and standards and the creation of new specifications to cover technical areas where standards do not currently exist.
-
sizing power generation and fuel capacity of the all electric Warship
Electric Ship Technologies Symposium, 2007Co-Authors: Norbert DoerryAbstract:Current sizing algorithms for Warship power generation and fuel tank capacity were developed over forty five years ago when ship service loads were a small fraction of the overall power demand. Electric load growth, particularly with the introduction of high power mission systems, results in ship service maximum margined loads being nearly the same as the maximum propulsion load. In many operating conditions, ship service power demands exceed propulsion demands. This paper proposes new sizing methods for all-electric Warships that are tied to operational effectiveness. These sizing methods are based on mobility mission tactical situations such as high speed transit, economical speed transit, and on station time. Additionally, the methods are sensitive to drag reduction efforts, temperature, and the ability to maintain speed in higher sea states. The goal is to optimize shipboard power and propulsion system life cycle cost while meeting operational requirements.
-
Institutionalizing the Electric Warship
Naval Engineers Journal, 2006Co-Authors: Norbert DoerryAbstract:The Navy has invested a considerable amount of resources in developing Electric Warship technology in the past twenty years. We have witnessed a number of early technology demonstrations as well as incorporation of Integrated Power System (IPS) technology into ship programs such as LHD 8, T-AKE, DD(X), and CVN 21. Although these early adopters have paved the way for establishing the practice of electric Warship design, we are now at a critical point in time for institutionalizing the electric Warship. A technology is institutionalized when the following activities have occurred: ▪ Establish a common architecture and interfaces. ▪ Establish a common design processes. ▪ Incorporate the architecture and design processes into design tools. ▪ Codify the practice in government or industry specifications, standards, and guides. ▪ Teach the architecture and design process as part of a typical engineering school curriculum. This article reviews the progress in electric Warship technology, describes progress (including ongoing efforts) in institutionalization, and highlights critical near term shortcomings. Some of the shortcomings in design processes and tools include: ▪ Undefined (in authoritative documentation) concepts such as zonal survivability and quality of service. ▪ Obsolete requirement terms such as “sustained speed” and “endurance speed/range” ▪ Conflicting design practices for propulsion and ship service prime mover sizing. ▪ Customized system protection strategies for different classes of ships. ▪ Ambiguous methods for the sizing of zonal distribution system components. ▪ Lack of integration of IPS design algorithms into ship concept tools such as ASSET. ▪ Lack of knowledge as to how to effectively use modeling and simulation to make electric plant design decisions for each stage of ship design. Additionally, the article details progress in updating standards and specifications, such as the Naval Vessel Rules and DOD-STD-1399. Finally, efforts to incorporate Electric Warship design into the curriculum at [RA1] traditional Naval Architecture are described.
Zhang Yuzhi - One of the best experts on this subject based on the ideXlab platform.
-
research of air defense target assignment for Warship formation based on mas
IEEE International Conference on Adaptive Science & Technology, 2011Co-Authors: Wang Lei, Wang Wei, Liu Zhengguo, Qiu Chuchu, Zhang YuzhiAbstract:On the background of air defense war for Warship formation with the modern information environment, a Multi-agent System(MAS) model of air defense target assignment for Warship formation is proposed by means of the MAS theory and method. An optimization algorithm based on Genetic Algorithm(GA) is used to solve this model, therefore provide a new way for the decision of air defense target assignment for Warship formation.
-
research on weapon target assignment for surface Warship formation with cooperative engagement capability
Fire Control and Command Control, 2009Co-Authors: Zhang YuzhiAbstract:On the base of analyzing the mode of weapon target assignment for surface Warship formation with cooperative engagement capability,a MAS model of the weapon target assignment for Warship formation is proposed by means of the MAS theory and method,it is described which includes all kinds of physical or logical resource by the Agent,many agent subsystem is connected into a integrated system through network and communication protocols of the Agent.The Agent structure of a mapping entity functions has been designed,therefore provide a new way for the decision of the weapon target assignment for Warship formation.
Zhan Shi - One of the best experts on this subject based on the ideXlab platform.
-
research on c2 structure and target assignment model of intelligent Warship formation
International Conference on Software Engineering, 2018Co-Authors: Yayun Tan, Feng Chen, Xiefei Yan, Zhan ShiAbstract:Intelligent combat is the inevitable trend of future war development. Aiming at the command control and target assignment of unmanned Warship formation in the course of combat, a limited central control hierarchy command and control structure for unmanned Warship formation was designed, and the advantages of the system relative to the typical command and control structure were analyzed. A target assignation model for cooperative combat of unmanned Warship formation was established. The operational reward and cost functions were derived, and the model constraints were obtained. The research results provided reference for designing the command and control system of unmanned Warship formation.
Zhu Ji - One of the best experts on this subject based on the ideXlab platform.
-
research on air defense target assignment mathematical models for surface Warship formation
Computer and Digital Engineering, 2013Co-Authors: Zhu JiAbstract:Hypothesis of coordinated air defense target assignment issues for surface Warship formation are summarized.Major factors affecting target assignment are discussed.Then mathematical models of target assignment are emphatically researched.The typical objective functions and constraint functions of damage efficiency maximization,synergistic effect maximization and target missing minimization are given.At last,target assignment principles are discussed.The achievement of this paper offers a reference for study of surface Warship formation coordinated air defense target assignment.
-
air defense target assignment mathematical models for surface Warship formation
Computer and Digital Engineering, 2013Co-Authors: Zhu JiAbstract:Hypothesis of coordinated air defense target assignment issues for surface Warship formation are summarized.Major factors affecting target assignment are discussed.Then mathematical Models of target assignment are emphatically researched.The typical objective functions and constraint functions of damage efficiency maximization,synergistic effect maximization and target missing minimization are given.At last,target assignment principles are discussed.The achievement of this paper offered a reference for study of Surface Warship Formation coordinated air defense target assignment.
