Simulation-Based Design Process of Smart Machines
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Hardware-In-The-Loop Simulation of Aircraft Actuator
Hardware-in-the-Loop Simulation of Aircraft Actuator Robert Braun Fluid and Mechanical Engineering Systems Degree Project Department of Management and Engineering LIU-IEI-TEK-A{08/00674{SE Master Thesis LinkÄoping,September 3, 2009 Department of Management and Engineering Division of Fluid and Mechanical Engineering Systems Supervisor: Professor Petter Krus Front page picture: http://www.flickr.com/photos/thomasbecker/2747758112 Abstract Advanced computer simulations will play a more and more important role in future aircraft development and aeronautic research. Hardware-in-the-loop simulations enable examination of single components without the need of a full-scale model of the system. This project investigates the possibility of conducting hardware-in-the-loop simulations using a hydraulic test rig utilizing modern computer equipment. Controllers and models have been built in Simulink and Hopsan. Most hydraulic and mechanical components used in Hopsan have also been translated from Fortran to C and compiled into shared libraries (.dll). This provides an easy way of importing Hopsan models in LabVIEW, which is used to control the test rig. The results have been compared between Hopsan and LabVIEW, and no major di®erences in the results could be found. Importing Hopsan components to LabVIEW can potentially enable powerful features not available in Hopsan, such as hardware-in-the-loop simulations, multi-core processing and advanced plot- ting tools. It does however require fast computer systems to achieve real- time speed. The results of this project can provide interesting starting points in the development of the next generation of Hopsan. Preface This thesis work has been written at the Division of Fluid and Mechanical Engineering Systems (FluMeS), part of the Department of Management and Engineering (IEI) at LinkÄopingUniversity (LiU). -
Aircraft System Simulation for Preliminary Design
28TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES AIRCRAFT SYSTEM SIMULATION FOR PRELIMINARY DESIGN Petter Krus, Robert Braun, Peter Nordin, and Björn Eriksson Linköping University, SE-58183 Linköping, Sweden [email protected] Keywords: aircraft conceptual design, system modeling, mission simulation Abstract subsystem as early in preliminary design as possible, and then use this model to develop the Developments in computational hardware and design further. In this way the simulation model simulation software have come to a point where becomes a point of convergence for the aircraft it is possible to use whole mission simulation in conceptual design as well as the conceptual a framework for conceptual/preliminary design. design of the subsystem as well as a tool for This paper is about the implementation of full further development in preliminary design. system simulation software for Using simulation performance conceptual/preliminary aircraft design. It is characteristics at the whole aircraft level can be based on the new Hopsan NG simulation evaluated very straightforwardly, and things like package, developed at the Linköping University. trim drag are accounted for as a byproduct. The Hopsan NG software is implemented in Furthermore, as the design progress into sub C++. Hopsan NG is the first simulation system design, systems such as actuation software that has support for multi-core systems, fuel systems etc, can also be included simulation for high speed simulation of multi and verified together in the actual flight profile. domain systems. Using simulation models of whole aircraft with In this paper this is demonstrated on a subsystems, it is then possible to do design flight simulation model with subsystems, such as analysis, e.g. -
Postdoctoral Fellow and Research Engineer Positions
Postdoctoral Fellow and Research Engineer Positions National University of Singapore Principal Investigator: Dr. Yang Liu Email: [email protected]; [email protected]; Homepage:https://www.eng.nus.edu.sg/cee/staff/liu-yang/ 1. Postdoctoral Fellow - 00CUR Description The research project is funded under Artificial Intelligent–Enterprise Digital Platform (AI-EDP) Programme in the areas of Smart City and Smart MRO. The postdoctoral researcher will work in ST Engineering & NUS Joint Lab and collaborate with the Transportation Group in the Department of Civil and Environmental Engineering, the Decision Analysis Group in the Department of Industrial System Engineering and Management, the AI Research group in the Department of Electrical and Computer Engineering at NUS and ST Engineering. The research project aims to develop a methodology framework to generate intelligent traffic diffusion plans and information dissemination strategies by analyzing historical traffic data. It is expected to deliver intelligent tools to access traffic accident impact and to generate traffic diffusion strategies by machine/deep learning, simulation, and optimization techniques. The postdoctoral researcher will lead the research project, supervise research students, and write research proposals and reports. This is a full-time position, and the duration of the first contract is one year. There is an opportunity to extend the position to multiple years, depending on the performance in the first year and the availability of funding. Qualifications • Ph.D. degree -
Compiling Maplesim C Code for Simulation in Vissim
Compiling MapleSim C Code for Simulation in VisSim 1 Introduction MapleSim generates ANSI C code from any model. The code contains the differential equations that describe the model dynamics, and a solver. Moreover, the code is royalty-free, and can be used in any simulation tool (or development project) that accepts external code. VisSim is a signal-flow simulation tool with strength in embedded systems programming, real-time data acquisition and OPC. This document will describe the steps required to • Generate C code from a MapleSim model of a DC Motor. The C code will contain a solver. • Implement the C code in a simulation DLL for VisSim. VisSim provides a DLL Wizard that sets up a Visual Studio C project for a simulation DLL. MapleSim code will be copied into this project. After a few modifications, the project will be compiled to a DLL. The DLL can then be used as a block in a VisSim simulation. The techniques demonstrated in this document can used to implement MapleSim code in any other environment. MapleSim’s royalty -free C code can be implemented in other modeling environment s, such as VisSim MapleSim’s C code can also be used in Mathcad 2 API for the Maplesim Code The C code generated by MapleSim contains four significant functions. • SolverSetup(t0, *ic, *u, *p, *y, h, *S) • SolverStep(*u, *S) where SolverStep is EulerStep, RK2Step, RK3Step or RK4Step • SolverUpdate(*u, *p, first, internal, *S) • SolverOutputs(*y, *S) u are the inputs, p are subsystem parameters (i.e. variables defined in a subsystem mask), ic are the initial conditions, y are the outputs, t0 is the initial time, and h is the time step. -
Filename Extensions
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A Comparison of Software Engines for Simulation of Closed-Loop Control Systems
New Jersey Institute of Technology Digital Commons @ NJIT Theses Electronic Theses and Dissertations Spring 5-31-2010 A comparison of software engines for simulation of closed-loop control systems Sanket D. Nikam New Jersey Institute of Technology Follow this and additional works at: https://digitalcommons.njit.edu/theses Part of the Electrical and Electronics Commons Recommended Citation Nikam, Sanket D., "A comparison of software engines for simulation of closed-loop control systems" (2010). Theses. 68. https://digitalcommons.njit.edu/theses/68 This Thesis is brought to you for free and open access by the Electronic Theses and Dissertations at Digital Commons @ NJIT. It has been accepted for inclusion in Theses by an authorized administrator of Digital Commons @ NJIT. For more information, please contact [email protected]. Cprht Wrnn & trtn h prht l f th Untd Stt (tl , Untd Stt Cd vrn th n f phtp r thr rprdtn f prhtd trl. Undr rtn ndtn pfd n th l, lbrr nd rhv r thrzd t frnh phtp r thr rprdtn. On f th pfd ndtn tht th phtp r rprdtn nt t b “d fr n prp thr thn prvt td, hlrhp, r rrh. If , r rt fr, r ltr , phtp r rprdtn fr prp n x f “fr tht r b lbl fr prht nfrnnt, h ntttn rrv th rht t rf t pt pn rdr f, n t jdnt, flfllnt f th rdr ld nvlv vltn f prht l. l t: h thr rtn th prht hl th r Inttt f hnl rrv th rht t dtrbt th th r drttn rntn nt: If d nt h t prnt th p, thn lt “ fr: frt p t: lt p n th prnt dl rn h n tn lbrr h rvd f th prnl nfrtn nd ll ntr fr th pprvl p nd brphl th f th nd drttn n rdr t prtt th dntt f I rdt nd flt. -
Methods and Software Tools for Estuary Behavioural System Simulation DRAFT V1.5
FD2117 EstSim Project Report 3 Methods and software tools for estuary behavioural system simulation DRAFT v1.5 Methods and software tools for estuary behavioural system simulation Defra/Environment Agency Flood and Coastal defence R&D Programme-FD 2117 Project Report 4 Jon French Helene Burningham DRAFT August 2006 University College London 1 FD2117 EstSim Project Report 3 Methods and software tools for estuary behavioural system simulation DRAFT v1.5 CONTENTS 1. Introduction 2. Qualitative modelling of estuary system behaviour 3. Computational basis of qualitative behavioural system models 3.1 General issues 3.2 Boolean network formulation 4. Software platforms for behavioural estuary system modelling 4.1 Specialised system simulation packages 4.2 Numerical analysis and visualisation packages 5. Alternative architectures for an EstSim software tool 6. Boolean network based estuary behavioural system modelling 6.1 System diagram definition and specification of Boolean functions 6.2 Further development of Boolean network model 6.3 Simulation of generic estuary types 6.4 Statistical properties of generic estuary systems 6.5 EstSim Boolean model applied to historic change in the Ribble estuary 6.6 Towards the development of a GUI-based tool 7. Conclusions and recommendations References Appendix 1: GUI based dynamics system simulation software product overview Appendix 2: Numerical computation and visualisation software product overview Appendix 3: Geomorphological understanding incorporated into Boolean functions Appendix 4: Main morphological components for EstSim generic estuary types Appendix 5: Example of steering file format for prototype simulator 2 FD2117 EstSim Project Report 3 Methods and software tools for estuary behavioural system simulation DRAFT v1.5 1. -
Arquitectura Para La Interoperabilidad De Unidades De Simulacion´ Basadas En Fmu
ARQUITECTURA PARA LA INTEROPERABILIDAD DE UNIDADES DE SIMULACION´ BASADAS EN FMU Proyecto Fin de Carrera Ingenier´ıaInform´atica 16/02/2015 Autora: Tutores: S´anchez Medrano, Mar´ıadel Carmen Hern´andezCabrera, Jos´eJuan Evora´ G´omez,Jos´e Hern´andezTejera, Francisco M. Escuela de Ingenier´ıaInform´atica.Universidad de Las Palmas de G.C. Proyecto fin de carrera Proyecto fin de carrera de la Escuela de Ingenier´ıaInform´atica de la Universidad de Las Palmas de Gran Canaria presentado por la alumna: Apellidos y nombre de la alumna: S´anchez Medrano, Mar´ıadel Carmen T´ıtulo: Arquitectura para la interoperabilidad de unidades de simulaci´onbasadas en FMU Fecha: Febrero de 2015 Tutores: Hern´andezCabrera, Jos´eJuan Evora´ G´omez,Jos´e Hern´andezTejera, Francisco M. Escuela de Ingenier´ıaInform´atica.Universidad de Las Palmas de G.C. Dedicatoria A MI MADRE Y A MI PADRE Escuela de Ingenier´ıaInform´atica.Universidad de Las Palmas de G.C. Agradecimientos A mis tutores. A Jos´eJuan Hern´andezCabrera por su direcci´ony orientaci´onen este proyecto. Por ser un excelente mentor que ha permitido iniciarme en la l´ıneade investi- gadora y en el aprendizaje de otras filosof´ıasde programaci´on.A Jos´e Evora´ G´omezpor sus explicaciones y ayuda incondicional durante todo el desarrollo. A Francisco Mario Hern´andezpor darme la oportunidad de integrarme en este excelente equipo. A todo el grupo de profesores que me han instruido durante todos estos a~nosper- miti´endomeconseguir el objetivo deseado: ser ingeniera inform´atica. A todos mis compa~neros y amigos de carrera, en especial a Alberto y Dani. -
Diplomarbeit Simulation Von Flugzeugsystemen Mit HOPSAN
Diplomarbeit Department Fahrzeugtechnik und Flugzeugbau Simulation von Flugzeugsystemen mit HOPSAN Johannes Meier 10. August 2007 2 Hochschule für Angewandte Wissenschaften Hamburg Department Fahrzeugtechnik und Flugzeugbau Berliner Tor 9 20099 Hamburg Verfasser: Johannes Meier Abgabedatum: 10.08.2007 1. Prüfer: Prof. Dr.-Ing. Dieter Scholz, MS 2. Prüfer: Prof. Dr. Schulze Betreuer: Dr. Christian Müller Christian Matalla 3 Kurzreferat In dieser Arbeit wird das Simulationsprogramm Hopsan untersucht. Es ist ein Programm, das für die Simulation von hydraulischen Systemen entworfen wurde. Entwickelt wird es an der Universität von Linköping in Schweden seit 1977 und es ist für jedermann zugänglich. Ziel ist es die Eignung von Hopsan für die Simulation von verschiedenartigen Flugzeugsystemen zu überprüfen. Dabei wird auch auf die Theorie und die Handhabung eingegangen. Diese Arbeit ist in Teilen wie eine Bedienungsanleitung aufgebaut und soll den Einstieg in das Programm erleichtern. Mit Hilfe von Beispielen werden die Möglichkeiten von Hopsan aufgezeigt. Die Beispiele lehnen sich an hydraulische Flugzeugsysteme, Pneumatiksysteme und das Fahrwerk an. Zum Teil werden Ergebnisse von Simulationen mit denen von anderen Simulationspro- grammen verglichen. Die Arbeit mit diesem Programm hat gezeigt, dass die Bedienung ein- fach und schnell von statten geht. Der Vergleich von hydraulischen Systemen mit anderen Programmen ergab sehr ähnliche Ergebnisse. Weiterhin hat die Untersuchung gezeigt, dass Hopsan nur unter bestimmten Voraussetzungen für Pneumatiksysteme geeignete ist. 1 DEPARTMENT FAHRZEUGTECHNIK UND FLUGZEUGBAU Simulation von Flugzeugsystemen mit HOPSAN Aufgabenstellung zur Diplomarbeit gemäß Prüfungsordnung Hintergrund HOPSAN ist eine integrierte Umgebung zur Simulation von strömungsmechanischen Syste- men zur Leistungsübertragung. Ein System oder eine Komponente können vor dem Bau und der Inbetriebnahme getestet und analysiert werden. -
A Novel Fmi and Tlm-Based Desktop Simulator for Detailed Studies of Thermal Pilot Comfort
A NOVEL FMI AND TLM-BASED DESKTOP SIMULATOR FOR DETAILED STUDIES OF THERMAL PILOT COMFORT *Robert Hällqvist , **Jörg Schminder , *Magnus Eek , ***Robert Braun , **Roland Gårdhagen , ***Petter Krus *Systems Simulation and Concept Design, Saab Aeronautics, Linköping, Sweden **Applied Thermodynamics and Fluid Mechanics, Linköping University, Linköping, Sweden ***Fluid and Mechatronic Systems, Linköping University, Linköping, Sweden Keywords: OMSimulator, FMI, TLM, Pilot Thermal Comfort, Modelling and Simulation Abstract can be shifted to earlier design phases if detailed simulations of large portions of a complete Modelling and Simulation is key in aircraft sys- aircraft are feasible. However, in order to further tem development. This paper presents a novel, increase the use of M&S, and expand the scope multi-purpose, desktop simulator that can be of analysis using models, simulation of coupled used for detailed studies of the overall perfor- models developed in a wide variety of different mance of coupled sub-systems, preliminary con- tools need to be made available on the engineers’ trol design, and multidisciplinary optimization. and researchers’ desktop computers. Also, Here, interoperability between industrially rel- risks associated with tool-vendor lock-in and evant tools for model development and simu- licensing costs need to be kept at a minimum lation is established via the Functional Mock- if the benefits of M&S are to be further exploited. up Interface (FMI) and System Structure and Parametrization (SSP) standards. Robust and The ITEA3 financed research project Open distributed simulation is enabled via the Trans- Cyber Physical System Model-Driven Certified mission Line element Method (TLM). The ad- Development (OpenCPS) [1] aims to address the vantages of the presented simulator are demon- challenges identified by academia and industry strated via an industrially relevant use-case where in terms of efficient model integration and simulations of pilot thermal comfort are coupled simulation. -
Optimisation of the Simulated Interaction Between Pedestrians and Vehicles
Optimisation of the simulated interaction between pedestrians and vehicles A comparative study between using conflict areas and priority rule in Vissim Master’s thesis in the Master´s Programme Infrastructure and Environmental Engineering LINA DAHLBERG MATILDA SEGERNÄS Department of Civil and Environmental Engineering Division of GeoEngineering Research group Road and Traffic CHALMERS UNIVERSITY OF TECHNOLOGY Master´s Thesis BOMX02-17-5 Gothenburg, Sweden 2017 MASTER’S THESIS BOMX02-17-5 Optimisation of the simulated interaction between pedestrians and vehicles A comparative study between using conflict areas and priority rule in Vissim Master’s thesis in the Master´s Programme Infrastructure and Environmental Engineering LINA DAHLBERG MATILDA SEGERNÄS Department of Civil and Environmental Engineering Division of GeoEngineering Research Group Road and Traffic CHALMERS UNIVERSITY OF TECHNOLOGY Gothenburg, Sweden 2017 Optimisation of the simulated interaction between pedestrians and vehicles A comparative study between using conflict areas and priority rule in Vissim Master’s Thesis in the Master´s Programme Infrastructure and Environmental Engineering LINA DAHLBERG MATILDA SEGERNÄS © LINA DAHLBERG & MATILDA SEGERNÄS, 2017 Examensarbete BOMX02-17-5/ Institutionen för bygg- och miljöteknik, Chalmers tekniska högskola 2017 Department of Civil and Environmental Engineering Division of GeoEngineering Research Group Road and Traffic Chalmers University of Technology SE-412 96 Göteborg Sweden Telephone + 46 (0)31-772 1000 Department of Civil -
BTS Technology Standards Directory
BTS Technology Standards Directory Technology Standards Directory City of Portland, Oregon Bureau of Technology Services Summer 2021 Adopted September 14, 2021 Updated September 20, 2021 BTS Infrastructure Board Page 1 Summer 2021 Adopted 9/14/2021 V1.1 9/20/2021 BTS Technology Standards Directory Table of Contents 37. Operational Support Tools .................... 47 Introduction .............................................. 4 38. Project Management Tools ................... 49 Standards ...................................................... 4 39. Radio / Ham Radio ................................ 50 Security .......................................................... 4 40. Server Base Software ........................... 50 Exception to Standards.................................. 5 41. Source Code Control System ............... 51 Standard Classification .................................. 5 42. Telecommunications ............................. 51 Support Model ............................................... 6 43. Web Tools ............................................. 52 Energy Efficiency ........................................... 8 44. Workstation Software ............................ 53 BTS Standard Owner ..................................... 8 BTS Standards Setting Process .................... 9 Security Technology Standards ............56 ADA Assistive Technologies ........................ 10 45. Authentication ....................................... 56 46. Encryption ............................................. 56 Hardware Standards