The decentralized stochastic control of a linear dynamic system consisting of several subsystems is considered. A two-level approach is used by the introduction of a coordinator who collects measurements from the loca...
The decentralized stochastic control of a linear dynamic system consisting of several subsystems is considered. A two-level approach is used by the introduction of a coordinator who collects measurements from the local controllers periodically and in return transmits coordinating parameters. Two types of coordination are considered: open-loop feedback and closed loop. The resulting control laws are found to be intuitively attractive.
We consider a class of stochastic linear systems that are subject to jumps of unknown magnitudes in the state variables occurring at unknown times. This model can be used when considering such problems as the estimati...
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We consider a class of stochastic linear systems that are subject to jumps of unknown magnitudes in the state variables occurring at unknown times. This model can be used when considering such problems as the estimation of systems subject to possible component failures and the tracking of vehicles capable of abrupt maneuvers. Using Kalman-Bucy filtering and generalized likelihood ratio techniques, we devise an adaptive filtering system for state estimation and the detection of the jumps. An example that illustrates the dynamical properties of our filtering scheme is discussed in detail.
The first part of this two-part paper presents a general theory of dissipative dynamical systems. The mathematical model used is a state space model and dissipativeness is defined in terms of an inequality involving t...
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The first part of this two-part paper presents a general theory of dissipative dynamical systems. The mathematical model used is a state space model and dissipativeness is defined in terms of an inequality involving the storage function and the supply function. It is shown that the storage function satisfies an a priori inequality: it is bounded from below by the available storage and from above by the required supply. The available storage is the amount of internal storage which may be recovered from the system and the required supply is the amount of supply which has to be delivered to the system in order to transfer it from the state of minimum storage to a given state. These functions are themselves possible storage functions, i.e., they satisfy the dissipation inequality. Moreover, since the class of possible storage functions forms a convex set, there is thus a continuum of possible storage functions ranging from its lower bound, the available storage, to its upper bound, the required supply. The paper then considers interconnected systems. It is shown that dissipative systems which are interconnected via a neutral interconnection constraint define a new dissipative dynamical system and that the sum of the storage functions of the individual subsystems is a storage function for the interconnected system. The stability of dissipative systems is then investigated and it is shown that a point in the state space where the storage function attains a local minimum defines a stable equilibrium and that the storage function is a Lyapunov function for this equilibrium. These results are then applied to several examples. These concepts and results will be applied to linear dynamical systems with quadratic supply rates in the second part of this paper.
This paper presents the theory of dissipative systems in the context of finite dimensional stationary linear systems with quadratic supply rates. A necessary and sufficient frequency domain condition for dissipativene...
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This paper presents the theory of dissipative systems in the context of finite dimensional stationary linear systems with quadratic supply rates. A necessary and sufficient frequency domain condition for dissipativeness is derived. This is followed by the evaluation of the available storage and the required supply and of a time-domain criterion for dissipativeness involving certain matrix inequalities. The quadratic storage functions and the dissipation functions are then examined. The discussion then turns to reciprocal systems and it is shown that external reciprocity and dissipativeness imply the existence of a state space realization which is also internally reciprocal and dissipative. The paper proceeds with an examination of reversible systems and of relaxation systems. In particular, it is shown how a unique internal storage function may be defined for relaxation systems. These results are applied to the synthesis of electrical networks and the theory of linear viscoelastic materials.
作者：
Birnbaum, L.S.Bukzin, E.A.Saroyan, J.R.Leon S. Birnbaum holds a B.S. degree in Chemistry from City College of New York. He has completed graduate work in Chemistry at the University of Maryland and Temple University
and in Technology and Management at American University. He has been with the Navy Department Washington since 1949 and is currently Head of the Coatings and Chemistry Branch of the Materials Development and Application Office of the Naval Ship Engineering Center. Responsibilities of this Branch include such items as coatings corrosion control techniques insulation chemical cleaning water treatment toxicology and detection and decontamination of biological and chemical warfare agents. Prior to this Mr. Birnbaum was employed in the Industrial Test Laboratory Philadelphia Naval Shipyard from 1938 to 1949. Work during this period included supervision of a section which inspected paints and allied materials and petroleum products to determine their suitability for Naval use and direction of research in fire retardant treatments. He is a member of the American Chemical Society
Washington Paint Technical Group. National Association of Corrosion Engineers and the American Society of Naval Engineers. Mr. Bukzin is a research and development program manager in the Naval Ship Systems Command of the Department of the Navy in the fields of non-metallic materials
fuels lubricants cold weather operations and several other areas. He is a graduate chemical engineer from New York University with additional training in naval architecture and management which culminated in his participation in the Senior Development Program at Cornell University during the summer of 1960. He has been employed by the Command and its predecessor for the past 2b years and has been in his present position of R&D planning and programming for the past six years. Prior to that his major technical responsibilities were in the field of elastomers and their applications. He received several awards and published a number of papers during those years. Mr. Bukzin is a me
Report on paints used on surface ships and submarines for protection against corrosion and prevention of fouling, and on work connected with development and evaluation of such coatings;experiences with "hot plast...
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Report on paints used on surface ships and submarines for protection against corrosion and prevention of fouling, and on work connected with development and evaluation of such coatings;experiences with "hot plastic", "cold plastic" and vinyl paints;hazards in use of vinyl paints and safety precautions;test techniques;new toxics (which are only kind so far satisfactory antifouling formulations) under test.
The Preisach distribution function in electrical steel at different magnetizing frequencies has been studied by the combination of the experimental measurements in an Epstein frame and the numerical identification by ...
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作者：
FERRIS, LAWRENCE W.FREY, RICHARD A.MILLS, JAMES L.Laurence W. Ferris graduated from the University of California in 1916. After working at shipyards on the West Coast
came to the Bureau of Construction and Repair in 1925 and has contributed to the design of a wide variety of ships. For several years was head of a section dealing with structural design of turrets ammunition handling and allied subjects. More recently has been a Project Coordinator in the Bureau of Ships. Retired in June 1962. Author of the following papers: “The Effect of an Added Weight on Longitudinal Strength” SNA & ME 1940 “The Proportions and Form of Icebreakers”
SNA & ME 1959 “Developable Surfaces”
ASNE 1961. Richard A. Frey entered the Bureau of Ships upon graduation from Manhattan College
N. Y. in 1951. From 1951 through early 1957 he was on the Destroyer Type Desk and was primarily involved in the hull electronic and ordnance aspects of all destroyer type ships. From 1957 through 1962 Mr. Frey headed up the Surface-to-Surface Missile ASW Conventional Armament and Auxiliary Section of the Bureau of Ships Weapons Branch. His duties entailed all aspects relative to the installation of such weapon systems as REGULUS ASROC SUBROC torpedoes conventional guns and similar ordnance in various surface and sub-surface craft. Mr. Frey has been recently detailed to the Bureau's new SEAHAWK Program Management Office. James L. Mills
Jr. holds a bachelor's degree in Naval Architecture and Marine Engineering from the Webb Institute of Naval Architecture. Following his graduation in 1944 he was ordered to the USNR Midshipman's School at Cornell the Navy Fire Fighting and Damage Control School in Philadelphia and then to duty in the Construction and Repair Department aboard the USS PENNSYLVANIA. He subsequently served as the Assistant First Lieutenant and Damage Control Officer in that ship. After release from active duty Mr. Mills did naval architectural work at the David Taylor Model Basin the Naval Engineering Division of the U. S. Coast Guard and Bethlehem Steel's Staten Island
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