Lower bounds are given on the attainable mean-square performance in causally tracking the phase and frequency of a subcarrier that modulates an optical carrier in a direct-detection opticalcommunication system.
Lower bounds are given on the attainable mean-square performance in causally tracking the phase and frequency of a subcarrier that modulates an optical carrier in a direct-detection opticalcommunication system.
A bound is derived on the accuracy in causally estimating a Gaussian process from nonlinear observations. Both additive Gaussian noise and Poisson observations are included. The bound is used to study the control of a...
A bound is derived on the accuracy in causally estimating a Gaussian process from nonlinear observations. Both additive Gaussian noise and Poisson observations are included. The bound is used to study the control of a stochastic linear dynamical system with nonlinear observations of either type and an average quadratic cost. An asymptotic Separation Theorem is established showing that a linear feedback control law, involving a state estimate, is asymptotically optimum as the accuracy of the state estimate approaches the bound. On dérive une limite sur la précision dans l'estimation causale d'un processus gaussien à partir d'observations non-linéaires. Le bruit additif Gaussien aussi bien que les observations de Poisson sont incluses. La limite est utilisée pour étudier le contrôle d'un système dynamique stochastique linéaire avec observations non-linéaires d'un genre ou d'un autre, et un coût moyen quadratique. Un Théorême de Séparation asymptotique est établi montrant qu'une loi de contrôle de rétroaction linéaire impliquant une estimation d'état, est asymptotiquement optimum à mesure que la précision de l'estimation d'état approche la limite. Abgeleitet wird eine Schranke für die Genauigkeit bei der kausalen Schätzung eines Gauß'schen Prozesses aus nichtlinearen Beobachtungen. Sowohl additives Gauß'sches Rauschen als auch Poisson'sche Beobachtungen sind eingeschlossen. Die Schranke wird benutzt, um die Steuerung eines linearen stochastischen dynamischen systems mit nichtlinearen Beobachtungen beider Typen und durchschnittlichen quadratischen Kosten zu studieren. Ein asymptotisches Separationstheorem wird eingeführt, das zeigt, daß ein eine Zustandsschätzung einschließendes lineares Regelungsgesetz asymptotisch optimal ist, so wie sich die Genauigkeit der Zustandsschätzung der Schranke nähert. Бывeдeнa гpaницa тoчнocти пyтeм кayзaльнoй oцeнки гayccoвcкoгo пpoцecca нa ocнoвe нeлинeйныч нaблюдeний. Бключeны aддитивныe вeличины яayccoвcкoгo шyмa и нaблюдeний Пyaccoнa.
作者：
RAWLING, AGJOHNSON, NLArnold George Rawlings was born 20 December 1921 in Luke
Maryland. He received both a Bachelor's degree in Chemical Engineering and a Master's degree in Applied Mathematics from the University of Maryland. He served overseas as an LST officer in the Amphibious Forces of the United Navy participating in the Pacific campaigns of World War II. His professional experience includes theoretical mechanics at the Naval Ordnance Laboratory at White Oak (1949-52) digital computer design and large scale air defense system engineering at MIT (1952-54) Navy interceptor missile guidance and control system design at the Johns Hopkins Applied Physics Laboratory (1954-60) flight dynamics and currently submarine simulation as a consulting engineer with the General Electric Company. He is a member of the AIAA and Sigma Xi and is author of the papers “Automation and the Scientific Laboratory from a Systems Viewpoint” “Passive Determination of Homing Time” and “On Non-Zero Miss Distance.” Norman L. Johnson was born on 3 December 1937 in Three Falls
Michigan. He received a Bachelor's degree in Engineering Physics (1959) from Michigan Technological University and is currently studying towards a Master's degree. His professional experience at the General Electric Company includes analog and hybrid simulation engineering applications up to 1967. Since then he has held the post of Supervisory Engineer in the same area. Problems investigated during the past nine years include the body dynamics and control system design for interceptor missiles re-entry vehicles satellites and for the last two years submarines. He is co-author of the publication “Temperature Generated by the Flow of Liquids in Pipes.”
In designing the man-multiloop control system for a small submersible, many different types of terminal equipment for manual intervention can interface with the human operator, including handlebars, wheels, joysticks ...
In designing the man-multiloop control system for a small submersible, many different types of terminal equipment for manual intervention can interface with the human operator, including handlebars, wheels, joysticks and pedals. The proper choice of the means to control the boat in attitude and steering, as well as the actual implementation, constitute a major human factors design problem. This paper discusses a particularly promising concept of manual control that has shown superiority over several alternatives, and decribes the real-time simulation employed in verifying its advantages.
a model avionics system is presented showing how a doubly redundant, moderate speed digital computer subsystem can be made to solve the requirements of SST Navigation and control. This paper also considers that triple...
a model avionics system is presented showing how a doubly redundant, moderate speed digital computer subsystem can be made to solve the requirements of SST Navigation and control. This paper also considers that triple redundancy is feasible in terms of cost, performance, and reliability in the concept of functional modularity for SST application. The modular avionics systems presumes that the digital computer subsystem will be held to a sufficient minimum and that all the decision making will be made at the prerogative of the pilot. A brief elaboration of this philosophy suggests that the flight profile will be programmed for standard conditions and only deviations from standard will be computed and shown to the pilot etc., etc., etc. 1964 Institute of Navigation
This book reflects the considerable current industrial interest and investment in process controlsystems. The use of computersystems in process control can provide great benefits, and it is estimated that efficiency...
详细信息
ISBN:
(数字)9789401131162
ISBN:
(纸本)9780412395307;9789401053808
This book reflects the considerable current industrial interest and investment in process controlsystems. The use of computersystems in process control can provide great benefits, and it is estimated that efficiency can be increased by up to 30%. It is not surprising, therefore, that there have been considerable efforts by system designers and users to introduce and use such systems. Process hardware is integrated into a complete production system through data processing. It is for this purpose that technical specialists (e. g. electrical, mechanical, electronics, communication and process engineers and program mers) are involved in data processing. The scope of this book is therefore to assist in the selection of computer hardware and software that match the functional specification of the data processing component of a particular system. The principal points covered in this book are set out below. Part One: Production process hardware for a standard process is outlined and the information processing hardware is described. Large mechanical process hardware and process information devices (e. g. sensors and control elements involved in the process) create a coherent production unit, or system, which can be the control unit (i. e. the basic process unit). The hardware processes are described and the mathematics explained. This enables the application of control laws in order to linearize the process about its working point, as well as a stratification of process control tasks.
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