Simul. Notes Eur.最新文献

{"title":"Interactive Modelling and Simulation of Micromirror MEMS Devices","authors":"Sarbast M. Rasheed","doi":"10.11128/SNE.28.SN.10438","DOIUrl":"https://doi.org/10.11128/SNE.28.SN.10438","url":null,"abstract":"This paper presents an interactive software package for the modelling and simulation of microelectromechanical system (MEMS) devices utilizing the MATLAB high-level programming language and its interactive environment. The package provides a dynamic analysis and frequency responses of a 1-D torsional micromirror electrostatically actuated with staggered vertical comb-drives. Applying a frequency sweep to the micromirror equation, the torsional mode natural frequency may be estimated. The developed package consists of several graphical user interfaces used for modeling MEMS devices. The software package is useful for computing the forces and torques for different micromirror geometries.","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133145968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimation of Discontinuities from Point Cloud Based on Variable-Box Segmentation Method","authors":"Shun Matsukawa, K. Itakura, Yukinori Suzuki, A. Hayano","doi":"10.11128/sne.28.sn.10433","DOIUrl":"https://doi.org/10.11128/sne.28.sn.10433","url":null,"abstract":"For estimating discontinuities of a rock mass from point cloud (LiDAR) data, an algorithm called DiAnahas been used. It obtains a fracture plane from the valid point cloud inside a cubic bounding box. In DiAna, to extract the valid point cloud from the cubic bounding box, DiAna has to determine the threshold value to remove noises. It seems that this manual operation is hard work for long tunnels. To improve this manual operation, we developed Variable-Box Segmentation (VBS) method for LiDAR data recorded from tunnel. VBS has three processes, i.e., first segmentation, second segmentation, and combining. During first segmentation, the point cloud is segmented into large bounding boxes and noise is removed. During second segmentation, each box is divided into nine sub-boxies. Planes are estimated from point cloud data inside each sub-box. During combining, sub-boxies containing similar planes are joined. VBS was examined using LiDAR data including three sets of major discontinuities. Estimation results from VBS was compared with the reference planes decided from geological sketch. Results showed that similarity between reference planes and planes determined by VBS algorithm seems to be enough to find discontinuities from fractured planes.","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122147832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Falsification by Modelling and Simulation for Investigations in Hallstatt Archaeology","authors":"J. Tanzler, N. Popper, G. Wurzer, A. Bacher, K. Kowarik, H. Reschreiter, F. Breitenecker","doi":"10.11128/SNE.28.SN.10436","DOIUrl":"https://doi.org/10.11128/SNE.28.SN.10436","url":null,"abstract":"The prehistoric salt mines of Hallstatt in Austria are subject of great interest for archaeologists. Salt mining activities are dated to 1458-1245 B.C. in the Bronze Age. Modelling and simulation as virtual computational experimental archaeology’ can contribute important insights into different areas of archaeology as an addition to traditional experimental methods. In a cooperative project between the Natural History Museum Vienna and the TU Wien, questions regarding prehistoric mining processes, logistic processes, and population growth in the agricultural environment are analysed by modelling and simulation. This contribution presents simulation studies, which allow to study short-term mining processes and long-term population dynamics and agricultural working processes. Moreover, essentially, the simulation studies allow also excluding cases for these working processes. This fact underlines a special property of simulation in the area of archaeology: while classical modelling and simulation aims for verification of a certain assumptions, modelling and simulation in archaeology partly aims for falsification of assumptions of working processes or other historic events. Introduction Figure 1: Schematic reconstruction of the mining halls and shaft structure with rope pull systems (© D. Gröbner, H. Reschreiter, NHM Vienna). Tanzler et al. Falsification by Modelling and Simulation for Hallstatt Archaeology 130 SNE 28(3) – 9/2018 SN 1 Short-time Mining Processes Use of Bronze Picks Figure 2. Bronze pick for salt mining: archaeological reconstruction (left; © A. Rausch, NHM Vienna), pick rigid body model (midst), and supposed trajectories for use of the pick (right). Use of Rope Pull Systems. Tanzler et al. Falsification by Modelling and Simulation for Hallstatt Archaeology SNE 28(3) – 9/2018 131 SN Figure 3. Different design options for the rope pull system with closed rope (left) or open rope (right). Woodchip, Lighting and Air Consumption. Figure 5. Simulation results for air consumption depending on number of woodchips, burning time and workers . 2 Long-time Working Processes and Supply of Population Figure 5: Map of Hallstatt area: at left hill with mining area and mining village, at right valley with agricultural area (lake blue, garden -red, field brown, grass light green, wood dark green, rock –grey). Possible Stable Population. Tanzler et al. Falsification by Modelling and Simulation for Hallstatt Archaeology 132 SNE 28(3) – 9/2018 SN Figure 6. Simulation results with variation of food composition (green: available/used meat, red: available/used beans, blue: available/used grain) Overall Working Processes","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125234053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fault Tolerant Control for a Rotary Wing Aircraft","authors":"Gulay Unal, Emre Emre","doi":"10.11128/sne.28.sn.10424","DOIUrl":"https://doi.org/10.11128/sne.28.sn.10424","url":null,"abstract":"","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126974743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Actuator Fault Tolerant Control for a Rotary Wing Aircraft","authors":"E. Kiyak, A. Ermeydan","doi":"10.11128/sne.28.sn.10422","DOIUrl":"https://doi.org/10.11128/sne.28.sn.10422","url":null,"abstract":". Quadrotor is the one of the most popular rotary wing aircraft in control problems. There may be some problems in this system. In this case, quadrotor will not fly and do its duty effectively. In this study, a fault tolerant control strategy for a quadrotor is proposed in the presence of actuator faults. A linear mathematical model which is derived from a nonlinear model. The observer based state estimation approach is widely used in fault tolerant area. Here, this approach is used to detect and isolate faults in a quadrotor system. Generalized Observer Scheme (GOS) based Unknown Input Ob-server (UIO) is used for the isolation. Simulation results are presented to demonstrate the performance of the proposed fault tolerant control strategy. (cid:3)","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125242759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Monitoring and Control in Mining","authors":"A. Koistinen","doi":"10.11128/SNE.28.SN.10421","DOIUrl":"https://doi.org/10.11128/SNE.28.SN.10421","url":null,"abstract":"","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128383361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mean-Field Approximation of a Microscopic Population Model for Austria","authors":"M. Bicher, N. Popper","doi":"10.11128/SNE.28.SN.10432","DOIUrl":"https://doi.org/10.11128/SNE.28.SN.10432","url":null,"abstract":". Verification and validation of large agent bases models is a complicated process - to check for full functionality, the simulation has to be executed var-ious times, which takes both time and computational resources. In this discussion-paper we present an approach that could generally improve this process, applied on an agent-based population model for Austria. A so-called mean-field model in this case a partial differential equation (PDE) is used for this aim. Execution of the PDE simulation only takes a very short time, hence the mean-field model can provide a fast prospect on results, behaviour and sensitivity of the agent-based model used.","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122688460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SolarTherm: A New Modelica Library and Simulation Platform for Concentrating Solar Thermal Power Systems","authors":"A. Calle, J. Hinkley, P. Scott, John Pye","doi":"10.11128/SNE.28.SN.10427","DOIUrl":"https://doi.org/10.11128/SNE.28.SN.10427","url":null,"abstract":"SolarTherm is a new CST technology simulation platform. Based on the Modelica language, it offers an easy and high-flexible alternative to the conventional CST simulation tools. SolarTherm is composed by a Modelica library of components and systems fulleditable and runnable with the main Modelica environments and Python-based tools and scripts that provides a simulation framework.","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113991200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plant Disease Outbreak - Prediction by Advanced Data Analysis","authors":"Outi Mäyrä, M. Ruusunen, M. Jalli, L. Jauhiainen, K. Leiviskä","doi":"10.11128/SNE.28.SN.10431","DOIUrl":"https://doi.org/10.11128/SNE.28.SN.10431","url":null,"abstract":"In crop farming, pests and plant diseases cause losses for both grain yield and quality. The fungicides are used for yield protection. With the accurate plant disease prediction system, the farmers could optimize the chemical spraying and save money and environment. The plant disease modelling is challenging and widely discussed topic in modern agriculture. This short paper introduces the novel point of view for the net blotch prediction. In this approach, the weather measurements are combined with the historical net blotch observations and the data based prediction system is introduced. The estimation scheme is demonstrated with the example of the selected observation field data.","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121557549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Possibilities in State Event Modelling of Hybrid Systems","authors":"A. Körner, S. Winkler, F. Breitenecker","doi":"10.11128/SNE.28.SN.10429","DOIUrl":"https://doi.org/10.11128/SNE.28.SN.10429","url":null,"abstract":"This work-in-progress paper illustrates the idea of the conceptional separation between a mathematical model and a simulation model for state event models of dynamic hybrid systems. The traditional modelling and simulation process starts with a mathematical model, followed by an implementation of the model in a certain simulation environment and ends with the parametrisation of the numerical attributes followed by the simulation run. Current trends in simulation environments tends to go in the direction of graphical oriented modelling descriptions neglecting needs of conceptional (mathematical) models at the beginning of the process. This limits the modelling process and restricts efficiency. For comparison or benchmarking simulation environments as well as modelling languages, approaches and optimization for hybrid models, a conceptional model offers a framework to review these aspects.","PeriodicalId":262785,"journal":{"name":"Simul. Notes Eur.","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121932813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}