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EXACT SENSITIVITY ANALYSIS FOR OPTIMIZATION OF MULTI-COUPLED CAVITY FILTERS

INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS 1986年第1期14卷 63-77页

作者： BANDLER, JW CHEN, SH DAIJAVAD, S Simulation Optimization Systems Research Laboratory and the Department of Electrical and Computer Engineering McMaster University Hamilton Ontario Canada L8S 4L7

This paper describes an efficient approach to the simulation and exact sensitivity evaluation of multi-coupled cavity filters. The approach uses sensitivity formulae for such responses as input or output reflectron coefficient, return loss, insertion loss, transducer loss, gain slope and group delay, which are derived for a two-port equivalent of a general network described by its symmetrical impedance matrix. The formulae are specialized to the case of multi-coupled cavity filters, using a filter model which takes into account many non-ideal factors such as losses, frequency dependent coupling parameters and stray couplings. The formulation also treats synchronously or asynchronously tuned structures in a unified manner. Explicit tables of first- and second-order sensitivities w.r.t. all variables of interest, including frequency, are presented. Three problems of significant practical value in manufacturing of multi-cavity filters are solved with the direct application of our formulae. A 10th-order filter is considered for all three cases. The first case is simultaneous optimization of the amplitude and delay responses to obtain a self-equalized filter. The second case is accurate prediction of the responses for a lossy filter by simulating a lossless filter. The third case involves parameter identification of the filter from simulated measurements on its responses.

关键词： MATHEMATICAL TECHNIQUES

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Large Scale Minimax Optimization of Microwave Multiplexers 16

Large Scale Minimax Optimization of Microwave Multiplexers

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1986 16th European Microwave Conference, EUMA 1986

作者： Bandler, J.W. Chen, S.H. Daijavad, S. Kellermann, W. Renault, M. Zhang, Q.J. Simulation Optimization Systems Research Laboratory Department of Electrical and Computer Engineering McMaster University HamiltonL8S 4L7 Canada Optimization Systems Associates 163 Watson's Lane DundasONL9H 6L1 Canada

A new technique for contiguous-band multiplexer design involving an arbitrarily large number of channels and design parameters is described. The technique, based on network decomposition and sensitivity measures of practical microwave multiplexer structures, employs a sequence of relatively small optimization problems which correspond to growing a multiplexer by adding one or more channels at a time to the structure. The approach is illustrated by a 16-channel, 12 GHz multiplexer design involving 240 nonlinear design variables. © 1986 IEEE.

关键词： Multiplexing equipment

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SENSITIVITY EVALUATION OF PHASE-SHIFTING TRANSFORMERS USING THE COMPLEX LAGRANGIAN METHOD

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INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS 1986年第1期14卷 83-87页

作者： BANDLER, JW ELKADY, MA GREWAL, HK Simulation Optimization Systems Research Laboratory and the Department of Electrical and Computer Engineering McMaster University Hamilton Canada L8S 4L7 Ontario Hydro Toronto Canada.

Bandler and El-Kady have presented previously the complex Lagrangian method, which exploits the Jacobian matrix of the load flow solution in conjunction with a compact conjugate notation. The first-order changes of general network functions have been elaborately investigated to yield generalized sensitivity expressions for practical control parameters pertaining to various two-terminal power system components. The purpose of this letter is to present an extension of the previous work to cover the domain of non-reciprocal two-port transmission elements. We consider a class of phase-shifting transformers which are modeled as an ideal transformer (having complex turns ratio) in series with an equivalent impedance. The y-matrix description of this model involves the complex turns ratio and the transformer impedance, and is investigated as a fragment of the bus admittance matrix. Exact first-order sensitivity formulae for the transformer control parameters are derived in an elegant manner. Numerical results for IEEE 118-bus system are also provided.

关键词： MATHEMATICAL TECHNIQUES

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OPPORTUNITIES FOR PACIFIC FLEET FF-1052 CLASS SHIPS TO SAVE ENERGY

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NAVAL ENGINEERS JOURNAL 1985年第4期97卷 315-321页

作者： PEHLIVAN, H KENYON, CW Hasan Pehlivan:received his BS in marine engineering from the Merchant Marine Academy (Turkey) in 1971 and his MS degree from Old Dominion University (Norfolk) in 1975. He was employed by D.B. Cargo Line (Turkey) as an engineering officer on ocean-going cargo vessels from 1971 to 1973. After receiving his masters degree in power engineering in 1975 he was employed by J.J. Henry Co. Inc. in Washington DC where he was involved in supporting the DTNSRDC Shipboard Energy Conservation Program which included the development of the steam system simulation (STMSYS) heat balance computer program for FF-1052/1078 class frigates. In addition he was cognizant engineer for various fluid systems designs for PCG and CSGN. In 1978 he joined M. Rosenblatt & Sons Inc. where he was cognizant engineer for various fluid systems designs for CVV DDG-51 and ARS-50. He was also leading engineer in support of DTNSRDC for the development of innovative machinery options for the baseline DD-963. In 1980 he joined NKF Engineering Inc. where he directs and performs DTNSRDC ship energy conservation analyses for frigates cruisers destroyers and aircraft carriers. He has been assisting the NAVSEA energy office in directing and performing Ship Energy Conservation Assist Team (SECAT) surveys aboard Navy ships since 1982. Mr. Pehlivan is currently manager of ship auxiliary systems in charge of the design and development of fluid systems pollution abatement distilling plants etc. He is a member of ASNE. Clarence W. Kenyon:graduated from the State University of New York Maritime College in 1960 and sailed on a third assistant engineer's license with Isbrandtsen Steamship Company before accepting an engineering position with the Long Beach Naval Shipyard in 1961 where he worked in the Steam Propulsion and Auxiliaries Section and the Mechanical and Hydraulic Section. He also taught a course in engineering fundamentals to engineering technicians in the evenings. In 1963 he accepted a position with the Space Division of North American Avia

The shipboard energy conservation assist team (SECAT) program was introduced to the US Pacific Surface Fleet (SURFPAC) in 1983 following one year testing in the US Atlantic Surface Fleet (SURFLANT). Experiences aboard SURFLANT ships had provided the basis for improvements which could also be applied to SURFPAC ships. Chief among these improvements were simple fuel measurement, fuel curve development methods, an energy survey checklist, and an equipment status board which identifies economic machinery alignments. The first SURFPAC ship to receive a SECAT visit was a FF-1052 class ship. Fuel consumption was significantly higher on this ship than the six FF-1052/1078 class SURFLANT ships previously visited. SECAT immediately looked for reasons for this increase in fuel consumption. Three significant changes received by this ship and not received by the six SURFLANT ships were identified. They were a new design economizer, Navjet vice Wallsend burners, and removal of overload control valves on the forced draft blowers. Another SURFPAC frigate with the same three changes was visited to validate the results obtained from the first ship. This paper discusses recent improvements to the SECAT program. It also examines the differences in fuel consumption observed between SURFLANT and SURFPAC FF-1052/1078 class ships. The economics of potential solutions to the higher fuel consumption problem aboard SURFPAC ships is analyzed with special emphasis on alternative burner designs and forced draft blower changes. Recommendations are made to reduce fuel consumption both by equipment changes and expanded energy initiatives.

关键词： NAVAL VESSELS

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ISIM - A simulation LANGUAGE FOR MICROPROCESSORS

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simulation 1984年第3期43卷 133-136页

作者： HAY, JL CROSBIE, RE [o_1]Computer Simulation Centre Department of Electronic and Electrical Engineering University of Salford Salford M5 4WT England [o_2]Department of Computer Science California State University Chico Chico California 95929

ISIM is a new simulation language for both 8- and 16-bit micro computers. It is derived from the interactive simulation language ISIS, which has been installed on a variety of minicomputers and mainframes over the past few years. ISIM can run on a small 8-bit microcomputer with the CP/M operating system, 48K bytes of memory and floppy discs. It also runs on the larger 16-bit com puters operating under CP/M 86 or MS-DOS, and on the IBM PC operating under PC-DOS. Its interactive graphics capability is best exploited using a graphics terminal or the microcomputer's integral graphics display (e.g., IBM PC Graphics Adapter). The language features interactive 'command' and 'program' modes and incorporates a simple editor and a file handling facility which is fully compatible with the operating system. ISIM provides a comprehensive, highly interactive, simulation environment which allows the user full control of the simulation. These features allow the simulation to be interrupted to enable the user to display or modify values of all user variables, change in tegration control variables, or perform post-mortem plots before proceeding with the execution of the run.

关键词： graphics interactive ISIM ISIS language micro computer simulation special-purpose languages

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Case Study in Passive Circuit CAD

Case Study in Passive Circuit CAD

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European Conference on Microwave

作者： J.W. Bandler S.H. Chen S. Daijavad M. Renault Simulation Optimization Systems Research Laboratory Department of Electrical and Computer Engineering McMaster University Hamilton Canada

This tutorial paper reviews some fundamental principles in applying modern optimization techniques to passive microwave circuit design. Nonlinear minimax optimization is stressed, the exploitation of exact partial derivatives of circuit models is used and justified and a suitable case study is presented. The case study is the design of coupled-cavity, narrow-band filters, the results for which are obtained by a powerful interactive optimization package.

关键词： Passive circuits Design optimization Design automation Microwave theory and techniques Circuit synthesis Minimax techniques Coupling circuits Narrowband Microwave filters Packaging

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Optimal Design of Multi-Cavity Filters and Contiguous-Band Multiplexers

Optimal Design of Multi-Cavity Filters and Contiguous-Band M...

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European Conference on Microwave

作者： J.W. Bandler S.H. Chen S. Daijavad W. Kellermann Simulation Optimization Systems Research Laboratory Department of Electrical and Computer Engineering McMaster University Hamilton Canada

A general contiguous-band multiplexer optimization procedure exploiting exact network sensitivities is described. The structure under consideration consists of synchronously and asynchronously tuned multi-cavity filters distributed along a waveguide manifold. All design parameters, e.g., waveguide spacings (section lengths), input-output and filter coupling parameters, can be directly optimized using a powerful gradient-based minimax algorithm. Nonideal effects such as junction susceptances, dissipation and dispersive effects are readily taken into account.

关键词： Filters Multiplexing Frequency Design optimization Minimax techniques Insertion loss Algorithm design and analysis Waveguide junctions Sensitivity analysis Dispersion

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A GENERALIZED, COMPLEX ADJOINT APPROACH TO POWER NETWORK SENSITIVITIES

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INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS 1984年第3期12卷 191-222页

作者： BANDLER, JW ELKADY, MA Simulation Optimization Systems Research Laboratory and the Department of Electrical and Computer Engineering McMaster University Hamilton Canada L8S 4L7

A unified study of the class of adjoint network approaches to power system sensitivity analysis which exploits the Jacobian matrix of the load flow solution is presented. Generalized sensitivity expressions which are easily derived, compactly described and effectively used for calculating first-order changes and gradients of functions of interest are obtained. These generalized sensitivity expressions are common to all modes of formulating the power flow equations, e.g. polar and Cartesian. the approach exploits a special complex notation and complex matrix manipulations to define the adjoint system and to derive the sensitivity formulae. the approach is applicable to both real and complex function sensitivities.

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EVALUATION OF FAULTY ELEMENTS WITHIN LINEAR SUBNETWORKS

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INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS 1984年第1期12卷 23-37页

作者： STARZYK, JA BIERNACKI, RM BANDLER, JW Institute of Electronics Fundamentals Technical University of Warsaw Warsaw Poland Simulation Optimizations Systems Research Laboratory and the Department of Electrical and Computer Engineering McMaster University Hamilton Canada L8S 4L7

This paper presents a topologically based theoretical background for designing tests for identification of faulty parameter values in linear subnetworks. Nodal voltages are assumed t o be obtainable either by measurements or, indirectly, as a result of a nodal fault analysis. A formulation of nodal fault analysis for subnetworks is presented. It is shown how this approach can be used to evaluate faulty elements within inaccessible faulty subnetworks. The objective of this work is the reduction of the number of required current excitations and, thereby, the number of voltage measurements. The Coates flow-graph representation of a network is used.

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A MINIMAX APPROACH TO THE BEST MECHANICAL ALIGNMENT PROBLEM

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JOURNAL OF MECHANISMS TRANSMISSIONS AND AUTOMATION IN DESIGN-TRANSACTIONS OF THE ASME 1984年第1期106卷 31-40页

作者： BANDLER, JW ELKADY, MA KELLERMANN, W ZUBEREK, WM J. W. Bandler M. A. El-Kady W. Kellermann W. M. Zuberek Simulation Optimization Systems Research Laboratory Department of Electrical and Computer Engineering McMaster University Hamilton Canada L8S 4L7

This paper provides an attempt to formulate and to solve the best mechanical alignment problem, which arises in many practical situations when a relatively expensive manufactured product does not meet design specifications and a decision is to be made for partial retreatment of the product. We define and use concepts of regular points, reference points, and referenced points for a mechanical design. These points represent important features which must be reproduced subject to tolerances, which are defined with respect to (w.r.t.) various coordinate systems. The algorithm proposed identifies candidates for reworking using minimax optimization. While the concepts introduced and the method presented resulted from a variety of approaches to solving mechanical problems in two dimensions, this class of problem can arise in other areas and further generalization is possible.

关键词： Dimensions Algorithms Design Design engineering Optimization

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