{"title":"Online estimation of engine Driveline dynamic response","authors":"M. Madamedon, F. Gu, A. Aburass, A. Ball","doi":"10.1109/ICSAE.2016.7810216","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810216","url":null,"abstract":"Based on the key structures of the engine Driveline system a torsional vibration model is developed, to pinpoint important dynamics of the system.By implementing an Operational Modal Analysis (OMA) technique, using a parametric technique (Stochastic Subspace Identification (SSI)) algorithm on the Instantaneous Angular Speed (lAS) signal during engine's transient shutdown operation, key Driveline modal parameters were identified. Both simulation studies and experimental evaluation shows a good degree of reliability. Two flexible frequency mode around 4.197Hz and 13Hz and their respective damping ratio were estimated.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130531492","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":"Design, fabrication and testing of a hybrid micro-motion XY stage driven by voice coil actuators","authors":"Xavier Herpe, R. Walker, M. Dunnigan, X. Kong","doi":"10.1109/ICSAE.2016.7810179","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810179","url":null,"abstract":"Compliant micro-positioning stages offer high precision and repeatability. However, high accuracy typically involves a trade-off with workspace area and cost. This paper presents a compliant XY micro-motion stage, where hybrid manipulation has been implemented in an effort to maintain the workspace area and increase the positioning accuracy. The method presented in this work employs the use of a large range/low resolution linear encoders to measure the position of the stage (coarse positioning), before using short range/high resolution capacitive sensors to correct the positioning error (fine positioning). This solution achieves a positioning accuracy of greater than 3.28μm within a 6×6mm workspace. The compliant stage has been abrasive jet machined from Nylon-66 as its reduced Young's modulus is known to improve workspace area over conventional aluminium stages currently reported in literature.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131648995","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":"Adaptive OFDM subcarrier design for SAR Cross-Range Profile Reconstruction","authors":"M. Buhari, G. Tian, R. Tiwari, A. Muqaibel","doi":"10.1109/ICSAE.2016.7810159","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810159","url":null,"abstract":"In this paper, we investigate an adaptive Orthogonal Frequency Division Multiplexing (OFDM) subcarrier design for a Synthetic Aperture Radar (SAR) system that can be used in Through-the-Wall radar Imaging (TWI), detection of hidden object and pipelines inspection. At first, an OFDM SAR model is developed for a single target detection. The target is reconstructed via match filtering of the estimated phase history with a reference function. The phase history is estimated using Least Square Estimate (LSE) and parameters such as Root Mean Square Error (RMSE), cumulative side lobe levels and the main lobe width are used to test and compare the accuracy of the reconstruction process. Simulation results shows that increasing the number of subcarriers results in an improvement in the target reconstruction but at the cost of having a wider main lobe. The results are also compared with the Single Frequency (SF) case. Initial results shows that OFDM SAR method is a promising technique in SAR reconstruction process as compared with SF case such as Frequency Modulated Continuous Wave (FMCW). The technique is later extended to the detection of multiple targets scene.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130849091","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}
O. Popoola, W. Popoola, R. Ramirez-Iniguez, S. Sinanović
{"title":"Optimization of duty cycles for LED based indoor positioning system","authors":"O. Popoola, W. Popoola, R. Ramirez-Iniguez, S. Sinanović","doi":"10.1109/ICSAE.2016.7810219","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810219","url":null,"abstract":"In this paper, an optimal duty cycle, which increases packet delivery ratio (PDR) and reduces probability of collision is designed for packet transmission in an indoor positioning system based on a multiple LED estimation model (MLEM). MLEM improves positioning accuracy by identifying positions of overlap regions where light footprints from multiple LEDs. In MLEM, asynchronous LED transmitters send positional information at the same frequency, amplitude, and wavelength. Consequently, in an LED overlap region, transmitted packets collide and therefore are lost. Methods to avoid packet collision in this region are considered and based on keeping the hardware simple, packet-based pulse duration multiplexing is optimized to provide a time based pseudo-orthogonality between packets. Initial experiments showed a PDR of 0.5 in the overlap region. However, by defining the boundary conditions for non-persistent packet collisions, an exhaustive search for the optimal packet transmission configuration is carried out in this work. Results show that the optimum points occur at 0.09 and 0.1 duty cycles. The use of this optimal duty cycles improved PDR to 0.9 for transmission in the overlap region.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115753792","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":"Assessment of the effects of residual stresses on fatigue life of real rough surfaces in lubricated contact","authors":"M. Al-Mayali, H. P. Evans, K. Sharif","doi":"10.1109/ICSAE.2016.7810173","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810173","url":null,"abstract":"This paper explores the possible effects of residual stress fields resulting from plastic deformation of real rough surface asperities on subsequent fatigue. A finite element model for the elastic-plastic contact of rough surfaces using profiles taken from the surfaces of unrun test disks is used to obtain the residual stress fields. These residual stresses are then added to the elastic stress distribution obtained from an elastohydrodynamic analysis to see the effects on fatigue damage and fatigue life at the scale of the surface roughness asperities. For the current paper, Micro-EHL simulations were carried out using the modelling techniques described in detail in reference and a strain-life model was used for predicting multiaxial fatigue life. The results show the accumulated damage due to residual stress effects is concentrated near the surface of particular asperity features.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130240021","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":"Dual-band bandpass filter using coaxial Stepped Impedance Resonators","authors":"Yahui Wu, R. Gajaweera, J. Everard","doi":"10.1109/ICSAE.2016.7810184","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810184","url":null,"abstract":"This paper presents the theory of Stepped Impedance Resonator (SIR) and modifies traditional coaxial lines into coaxial SIRs for dual-band bandpass filter design. A simple feeding structure and an inter-resonator coupling structure have been demonstrated, which simplifies fabrication as well as providing flexibility of tuning. Two Chebyshev dual-band bandpass filters working in the GSM band (900/1750 MHz) were designed and simulated. The 2nd order dual-band bandpass filter has been fabricated and tested, realizing 1.23% and 1.07% fractional bandwidth at 906.5 MHz and 1772.5 MHz, respectively.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130288023","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":"Control system design for fuel to air ratio in an internal combustion engine with unknown time-delay and fuel fraction impinging manifold's wall","authors":"A. Al-Zughaibi, Najah F. Jasim","doi":"10.1109/ICSAE.2016.7810176","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810176","url":null,"abstract":"On account of increasingly strict needs on engine efficiency and emission control, the fuel to air ratio (FAR) control arrangements for internal combustion engines (ICEs) are still incessantly developed. The effects of time delay limit the FAR controller gains and degrade the system performance. This paper addresses a control system design for FAR in ICEs that suffer from unknown time-delay induced due to several reasons such as unknown evaporation time, unknown fuel quantity injected into the combustion process, and an imperfection in the model used to describe FAR and its relation to the surrounding factors that affect the combustion process. A new theorem is proposed in this context depending on Routh-Hurwitz technique and manipulating poles cancellation control method to achieve the required control action. A mathematical proof is introduced for the proposed theorem and a numerical simulation is performed to illustrate the validity of the control scheme.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130549174","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":"Analyzing fixed roof storage tanks using FE principles to investigate the stress relief degree caused by live loads against wind loads","authors":"Nawfal Hsaine, F. Franklin","doi":"10.1109/ICSAE.2016.7810170","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810170","url":null,"abstract":"Recent studies have focused on impact of environmental loads on large scale structures including storage facilities. In particular reference to severe gust wind conditions that impinge on storage tanks farms1, present paper sets the starting point for discovering feasible solutions to prevent or reduce the catastrophic failure due to occurrence of such events. Therefore, this work searches through the detectable potentialities of live and snow loads in reducing and relieving the severity of wind-induced critical stresses and other structural responses that generated at particular regions within domed roof storage tank structure. As practical model, a typical mid-sized 10000 cubic metres capacity, cylindrical walls, self-supporting dome roof fuel storage tank is studied in this article with different environmental and operational loading conditions. A numerical technique utilizing Finite Element (FE) principles has been implemented to model the structural components of the storage tank and Computational Fluid Dynamics (CFD) is used to model the wind field. To cover the investigation aspects comprehensively, four models were selected to idealize the aforementioned storage tank: low and high aspect ratios, each with shallow and deep dome roof degrees. Moreover, four different load cases were selected for use in the structural analysis: full and empty tank cases, each with wind load only, or with combined wind, snow and live loads.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130562876","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}
M. Rafiq, Kai Yi, Chengrong Li, Y. Lv, M. Numan, Usman Nasir
{"title":"Effect of Fe3O4 nanoparticle size on impulse breakdown strength of mineral oil-based nanofluids","authors":"M. Rafiq, Kai Yi, Chengrong Li, Y. Lv, M. Numan, Usman Nasir","doi":"10.1109/ICSAE.2016.7810185","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810185","url":null,"abstract":"Insulating oil modified by nanoparticles (NPs), which is often referred as nanofluids (NFs), has the potential to evolve into substitute of conventional transformer oil for their excellent electrical and thermal characteristics. They have attracted huge attention recently, particularly concerning the improvement of electrical breakdown. This paper develops a relationship that how sizes of NPs affect the positive and negative breakdown voltage. To be more specific, three sized monodisperse Fe3O4 nanoparticles i.e. 10nm, 20nm and 40nm were prepared and subsequently dispersed into insulating mineral oil to develop NFs with 40% W/V concentration. The lightening impulse breakdown strengths of oil samples with and without suspension of NPs were measured in accordance to IEC standard methods. The positive impulse breakdown strength manifested that breakdown strength is first increased up to a maximum value at certain size and then decreased. The results of negative impulse breakdown indicated that breakdown voltage of NFs with different sizes were less than the breakdown voltages of pure transformer oil. Possible modification mechanism of Fe3O4 nanoparticles on insulating properties of transformer oil is also discussed in this paper.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"89 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120971029","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":"New rules for deriving formal models from text","authors":"Muss A. Moahmed Omer, David Wilson","doi":"10.1109/ICSAE.2016.7810212","DOIUrl":"https://doi.org/10.1109/ICSAE.2016.7810212","url":null,"abstract":"Automatically converting text into formal models such as Enhanced Entity Relationship Diagrams, Class Diagrams and Relational Database Schemas is a time and effort saving process, but it is not a trivial process. There are a good number of rules required to convert Natural Language text into formal models. The purpose of this paper is to review existing rules, explain their limitations, and derive new rules for tackling those limitations and thereby helping to obtain an accurate conversion. The rules are divided into three groups: rules to define entities/classes/tables; rules to define relationship between entities/classes/tables and rules to define attributes of entities/classes/tables.","PeriodicalId":214121,"journal":{"name":"2016 International Conference for Students on Applied Engineering (ICSAE)","volume":"318 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126420990","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}