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design algorithm of an Aircraft Power Generation System

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS 2019年第6期55卷 2899-2910页

作者： Ismagilov, Flur Rashitovich Kiselev, Mikhail Anatolyevich Vavilov, Viacheslav Evgenievich Gusakov, Denis Valerievich Ufa State Aviat Tech Univ Ufa Russia State Res Inst Aviat Syst Moscow 125319 Russia

The paper deals with the design and testing of a power generation system for the future and existing aircrafts. A new design algorithm of the power generation components is presented. The proposed design algorithm was tested on a prototype: a full-size starter-generator and transformer-rectifier unit prototype was created with a transformer magnetic core made up of an amorphous magnetic material. Its stand tests were carried out both for each element and for the entire system. The proposed algorithm can be used to create power supply systems for aircraft with different voltage levels, including 270 Vdc and 200 Vac. The developed power generation system turned out to be 25-40% better than serial solutions by mass and efficiency.

关键词： Aircraft Optimization Windings Aerospace electronics Power generation Standards Rectifiers design algorithm permanent magnet (PM) machines power generation pulse transformers

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design algorithm for Optimum Capacity of ESS Connected With PVs Under the RPS Program

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IEEE ACCESS 2018年 6卷 45899-45906页

作者： Lee, Hyun Gu Kim, Gyu-Gwang Bhang, Byeong Gwan Kim, David Kwangsoon Park, Neungsoo Ahn, Hyung-Keun Konkuk Univ Dept Elect Engn Seoul 05029 South Korea Jungin Engn Co Ltd Energy Business Div Seoul 08506 South Korea Konkuk Univ Dept Comp Sci & Engn Seoul 05029 South Korea

A distributed power generation system uses an intermittent power source that provides low power. Furthermore, it cannot be centrally controlled from the perspective of the system operator. The photovoltaic (PV) power generation system is installed with an energy storage system (ESS) to increase the power source quality compared to that possible with PV-only power generation. In this paper, an estimation algorithm is proposed for improving battery capacity to construct a suitable and economical system. In addition, an optimal algorithm is proposed that considers different factors. For example, the cost of constructing the battery and the amount of electric power sales reflecting the renewable energy certificate weighting factor of 5.0 are based on the cost of the battery construction, depth of battery discharge, charge/discharge cycle of the battery, cost of the energy conversion device, operation maintenance cost, and charge cycle of the battery. The optimized battery capacity is calculated by considering the correlation between PV power and meteorological parameters, construction cost, and the benefit of the amount of electricity sold, with an error rate of 5.75%.

关键词： design algorithm energy storage system (ESS) optimum ESS capacity renewable energy certificate (REC) weighting factor renewable portfolio standard (RPS)

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design algorithm for Vertically-Baffled Flocculators

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ENVIRONMENTAL ENGINEERING SCIENCE 2021年第7期38卷 592-606页

作者： Pennock, William H. Lion, Leonard W. Weber-Shirk, Monroe L. New Jersey Inst Technol John A Reif Jr Dept Civil & Environm Engn Newark NJ 07102 USA Cornell Univ Sch Civil & Environm Engn Ithaca NY 14853 USA AguaClara Reach Ithaca NY USA AEESP Washington DC 20036 USA

To date, design guidance for hydraulic flocculators has been limited, with several articles focusing on the design of horizontally-baffled flocculators. In this article, a design algorithm for vertically-baffled flocculators is introduced based on physical principles governing baffled hydraulic flocculator performance. Vertically-baffled flocculators are more compact than their horizontally-baffled counterparts for design flow rates less than about 170 L/s (4 MGD). To accommodate narrow baffle spacings at the lowest flow rates, this work introduces the concept of obstacles, which are placed on baffles to enhance mixing to maintain the same mixing efficiency attainable in larger flocculators. Well-designed hydraulic flocculators have more uniform velocity gradients than conventional mechanical flocculators;approach plug-flow behavior, which has faster flocculation kinetics and less short-circuiting;and are less expensive to operate and maintain. design algorithms based on theoretical and practical considerations are developed, after which two illustrative design examples are given. Afterward, a discussion of the range of applicability for vertically-baffled and horizontally-baffled flocculators is presented. Cost comparisons with horizontally-baffled flocculators and mechanical flocculators are then made and turbidity performance data are provided. This vertically-baffled flocculator design approach has been proven in Central America, where it has been used to design 17 flocculators that are currently in use and have demonstrated dependable performance and low-cost operation and maintenance.

关键词： design algorithm development engineering hydraulic flocculator over-under vertically baffled

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A New Radar Waveform design algorithm With Improved Feasibility for Spectral Coexistence

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IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS 2015年第2期51卷 1029-1038页

作者： Aubry, A. De Maio, A. Huang, Y. Piezzo, M. Farina, A. Univ Naples Federico II Dept Elect Engn & Informat Technol I-80125 Naples Italy Hong Kong Baptist Univ Dept Math Kowloon Hong Kong Peoples R China Elettronica SpA I-00131 Rome Italy Selex ES I-00131 Rome Italy

Radar signal design in a spectrally crowded environment is currently a challenge due to the increasing requests for spectrum from both military sensing applications and civilian wireless services. The goal of this paper is to improve a previously devised algorithm for the synthesis of optimized radar waveforms fulfilling spectral compatibility with overlaid licensed radiators. The new technique achieves an enhanced spectral coexistence with the surrounding electromagnetic environment through a suitable modulation of the transmitted waveform energy, which was kept fixed at the maximum level in the previously devised algorithm. At the analysis stage, the waveform performance is studied in terms of trade-off among the achievable Signal to Interference Plus Noise Ratio (SINR), spectral shape, and the resulting Autocorrelation Function (ACF), also in situations where the previous technique cannot be applied.

关键词： Wireless services design algorithm radar Terms of trade waveforms Coexistence

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A new design algorithm for the PMHS motor considering the combination ratio

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TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES 2021年第3期29卷 1582-1597页

作者： Behniafar, Ali Darabi, Ahmad Gonbad Kavous Univ Dept Elect & Elect Engn Fac Engn Gonbad Kavous Iran Shahrood Univ Technol Fac Elect & Robot Engn Dept Elect & Elect Engn Shahrood Iran

Recently, the hysteresis motors have a special significance in the nuclear industries. This is because these motors have some advantages such as low noise, high mechanical strength and group feeding ability. They also have some disadvantages that make some limitations for related industries. These disadvantages include low synchronization torque, low power factor, low efficiency, and hunting. One solution to reduce these disadvantages is to combine the hysteresis motor with the PM motor. This however requires a correct and flexible design procedure as well as an appropriate choice of the machine structure. Accordingly, this paper aims to present a new design algorithm for a disc-type permanent magnet hysteresis synchronous (PMHS) hybrid motor. The proposed design algorithm not only tries to retain the positive features of the both motors in the resulted hybrid motor, but it also gives the user the option of determining the percentage of the combination of the two motors. In other words, the user can determine the contribution of each motor to the output power of the resulted motor. The proposed algorithm is finally validated through fabricating a prototype disc-type PMHS motor and evaluating its performance by simulation and experiment.

关键词： PMHS motor hysteresis motor PM motor design algorithm

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design algorithm for N-bit Input Parallel Counters in Application to dSiPM Readout 17

Design Algorithm for N-bit Input Parallel Counters in Applic...

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17th Conference on Ph.D Research in Microelectronics and Electronics (PRIME)

作者： Giroletti, Simone Ratti, Lodovico Vacchi, Carla Univ Pavia Pavia Italy INFN Pavia Pavia Italy

ISBN: (纸本)9781665467001

This work is concerned with the definition of an algorithm for the design of fast parallel counters suitable for counting 1's in large arrays of binary signal sources. One example of such systems is the silicon photomultiplier (SiPM), consisting of an array of SPADs (single photon avalanche diodes) each one providing a high output level when hit by a photon. The paper, besides describing the algorithm, will present and discuss a set of computational tools for estimating the design parameters of interest, such as area, power and delay, as a function of the number of cells to read out.

关键词： Parallel Counter design algorithm dSiPM

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An evolutionary design algorithm for ring-based SDH optical core networks

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BT TECHNOLOGY JOURNAL 2004年第1期22卷 135-144页

作者： He, L Botham, CP O'Shea, CD BT Exact Secure Syst Res Grp Adastral Pk England BT Exact Broadband Network Engn Unit Adastral Pk England BT Exact Network Engn Unit Adastral Pk England

This paper presents a ring-based SDH optical core network design problem with multiple constraints. A novel evolutionary algorithm (EA) is developed to successfully find near-optimal solutions for a realistic case study. Compared to a genetic algorithm, this EA is demonstrated to be more efficient and effective by experimental simulation results, and shows promise for tackling ring-based network design problems.

关键词： design algorithm optical core network Case studies network design problem design by evolution Simulation results optimal solution

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Station collocation design algorithm for multiple geostationary satellites operation

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JOURNAL OF SPACECRAFT AND ROCKETS 2003年第6期40卷 889-893页

作者： Park, BK Tahk, MJ Bang, HC Choi, SB Korea Adv Inst Sci & Technol Commun Satellite Syst Dept Taejon 305701 South Korea Korea Aerosp Res Inst Commun Ocean & Meteorol Program Off Taejon 305333 South Korea

This Note presented a new station collocation parameter design techniquebased on a virtual dynamic model. The new methodology is applicable to collision-free operation ofmultiple geostationary satellites collocated at the same longitudinal slot. A minimum set ofparameters was used as input, which automatically produces the optimal position of the eccentricitycontrol circles by using the virtual dynamics. Simulation results illustrate that the proposedstrategy properly calculates the positions of the eccentricity control circle for any number ofsatellites with guaranteed maximum separation distance. The advantage of the proposed technique isthat the collocation of any number of satellites can be treated with natural extension of thecurrent methodology.

关键词： design algorithm geostationary satellite Circles Surgery collocation ECCENTRIC satellites Eccentricity

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A novel performance-driven topology design algorithm 07

A novel performance-driven topology design algorithm

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12th Asia and South Pacific design Automation Conference

作者： Pan, Min Chu, Chris Patra, Priyadarshan Iowa State Univ Dept Elect & Comp Engn Ames IA 50011 USA Intel Corp Hillsboro OR 97124 USA

ISBN: (纸本)9781424406296

This paper presents a very efficient algorithm for performance-driven topology design for interconnects. Given a net, it first generates A-tree(1) topology using table lookup and net-breaking. Then a performance-driven post-processing heuristic not restricting to A-tree topology improves the obtained topology by considering the sink positions, required time and load capacitance to achieve better timing. Experimental results show that our new technique can produce topologies with better timing and is hundreds of times faster than traditional approach.

关键词： topology load capacitance Table lookup Tree Topology design algorithm efficient algorithm new technique Nets

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Automatic design algorithm of a Robotic End-Effector for a set of Sheet-Metal Parts 7

Automatic Design Algorithm of a Robotic End-Effector for a s...

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Proceedings of the 2015 7th IEEE International Conference on Cybernetics and Intelligent Systems (CIS) And Robotics, Automation and Mechatronics (RAM)

作者： Sintov, Avishai Shapiro, Amir Ben Gurion Univ Negev Dept Mech Engn IL-84105 Beer Sheva Israel

ISBN: (纸本)9781467373388

Robotic end-effectors in automated production lines are specially designed and built for a unique task and for a particular part. An end-effector capable of grasping different parts with different geometries will expand its benefit and reduce costs. This work focuses on the grasp of sheet metal parts for the automotive industry. In order to maximize the use of a single end-effector, this paper proposes a search algorithm for a simple common grasp configuration. Such configuration imply for an end-effector design capable of grasping a set of sheet metal parts. The algorithm maps possible grasps which are candidate to be common. We define a novel quality measure estimating the distribution of the contacts across the sheet metal part. Candidate grasps which have a sufficient quality are mapped into high-dimensional feature vectors. These feature vectors parameterize the geometry of the polyhedron formed by the contacts locations and the direction of the surface normals relative to the polyhedron. Thereby, they describe the design of the end-effector compatible to the grasp. A database is generated for all possible grasps for each part in the feature vector space. A similarity join based on nearest-neighbor search and classification algorithm are used for intersecting all possible feature vectors over all sheet metal parts and finding common ones. Simulations of a 3-finger grasp on four meshed sheet metal parts resulted in a common grasp. Results of the simulations validate the feasibility of the proposed algorithm.

关键词： Sheet metal components Grasp Eigenvector end effectors polyhedrons Nearest neighbor query surface normal SEARCHING algorithm Computer-Aided design design algorithm metal parts Sorting algorithm

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