AC 2007-2319: DATA ACQUISITION AND COMPUTER SIMULATIONINTEGRATED EXPERIMENT FOR AN UNDERGRADUATE MACHINEDYNAMICS LABORATORYPetru-Aurelian Simionescu, University of Tulsa Petru-Aurelian Simionescu is currently an Assistant Professor of Mechanical Engineering at The University of Tulsa. His teaching and research interests are in the areas of Dynamics, Vibrations, Optimal design of mechanical systems, Mechanisms and Robotics, CAD and Computer Graphics. He is on leave to the University of Alabama at Birmingham.Jeremy S. Daily, University of Tulsa Jeremy S. Daily is an Assistant Professor of Mechanical Engineering at The University of Tulsa. His teaching and research interests are in the areas of
' s Figure 2: Single phase equivalent circuit model of a 3-phase induction motor. Page 12.921.4 Proceedings of the 2007 American Society for Engineering Education Annual Conference & Exposition Copyright ø 2007, American Society for Engineering EducationEach of the variables is defined as follows:‚ Va 5 Line-to-neutral voltage ‚ Rs 5 stator resistance‚ I 5 Line current ‚ Lls 5 stator leakage inductance a‚ Ea 5 Magnetizing voltage ‚ RC 5
12.895.5velocity, Ujet, of 1 m/s. Jet details: Jet Qjet = 3.33x10-5 m3/s H Ujet = 1 m/s Reynolds number = 6612 Measurement field (a) Flow field region under analysis. 0 0.1 m/s
time (s) time (s) time (s) 300 300 320 295 295 p init = 307 kPa 2.71 mm d t = 1 mm 290 290
multipledepartments. Currently, the author is working to include a final project for the course.Students will be given a final project in the middle of the semester to model a mechatronicsystem and develop a controller to meet several performance specifications. The designs will beimplemented in Simulink with MATLAB’s Real Time Workshop. The final project will betaught as a competition between student teams with an incentive for the winning design team.The students will write a project report and present their final group design to the class.References[1] P. Antsaklis, T. Basar, R. Decarlo, N.H. McClamroch, M. Spong, and S. Yurkovich, “ Report on the NSF/CSS Workshop on New Directions in Control Engineering Education,” IEEE Control Syst. Mag., vol. 19
the reactor dataacquisition system and the remote user.References1. J. R. WHITE, A. JIRAPONGMED and L. M. BOBEK, “A Web-Based System for Access to Real-Time and Archival Research Reactor Data”, Trans. Am. Nuc. Soc. (June 2004).2. P. JAIN, S. MARKIDIS, B. G. JONES, RIZWAN-UDDIN, J. R. WHITE, and L. M. BOBEK, “Web-casting of Nuclear Reactor Experiments”, Trans. Am. Nuc. Soc. (Nov. 2006).3. J. R. WHITE and L. M. BOBEK, “Reactor Operations Training via Web-Based Access to the UMass-Lowell Research Reactor,” Proceedings of Conference on Nuclear Training and Education, Jacksonville, Florida (Feb. 2007).4. The Nuclear101 website and UMLRR Online prototype, www.nuclear101.com/.5. InduSoft Web Studio, www.indusoft.com/.6. Centra Live for e
@stevens.eduAcknowledgmentsThis work was supported by NSF Grant No. 0326309. This support is gratefully acknowledged.The collaborative efforts and discussions with Mr. Chenghung Chang are very much appreciated.References[1] Gustavsson, I. (2002). A remote laboratory for electrical experiments. Proceedings of the 2002 ASEE Annual Conference & Exposition, Montreal, Canada, June 16-19, 2002.[2] Esche, S. K. (2005). On the integration of remote experimentation into undergraduate laboratories - pedagogical approach. International Journal of Instructional Media, Vol. 32, No. 4, 2005.[3] Esche, S. K. et al. (2003). An architecture for multi-user remote laboratories, World Transactions on Engineering and Technology Education. Vol. 2, No. 1, pp. 7
Companies, a professional services firmspecializing in risk and insurance services. Based on reviews of the fire literature,andunderstanding of the use of the space, and a survey of office plans, students selected an officeload of 52 kg/m2 as a representative fuel load. Realizing that flames were still observed at thecollapse time of 102 min, students estimated a burn time for the 96th floor of WTC1 of 120 min.Finally, students used the estimated office load, total floor area of 2873 m2, and estimated burntime to approximate an overall burning rate of 21 kg/s. Scale analysis was then used in order todesign a small scale office load producing similar dimensionless local and overall burning ratesand burn times. The students designed 150 mm x 150 mm x
, Issue 6, pp. 501-507.6. Ahn, S. H., Bharadwaj, B., Khalid, H., Liou, S. Y. and Wright, P. K., “Web-BasedDesign and Manufacturing Systems for Automobile Components: Architectures andUsability Studies,” International Journal of Computer Integrated Manufacturing, 15,pp.555–563, 2002.7. Feng, J., “Internet-Based Reverse Engineering,” International Journal of AdvancedManufacturing Technology, January, 2002.8. Hu, H., Yu, L., Tsui, P. W. and Zhou, Q, “Internet Based Robotic System forTeleoperation, Assembly, and Automation,” International Journal of AssemblyAutomation, Vol.21, No.2, pp.143-151, 2001. Page 12.952.159. Huang, G. Q. and Mak, K. L., “Web-integrated
27 29 29Modal score(s) 23 (6) 27, 30, 31 (3) 29, 31 (3) 27 (5) 27 (5) 32 (5)Midrange 29 27 28 31 28.5 28Between the pre-test and the post-test, the mean score for 2005 increased by 1.8 points (or 3.6%),compared to 3.6 points (7.2%) for the 2004 cohort. The median score increased by 1 point,compared to 2 points in 2004. The modal score was lower than two of the 2004 modal scores.Overall, the pre-test and post-test scores were higher in 2005 than in 2004, but they showed lessimprovement.Considering individual students’ changes in test scores, fifteen of the twenty-four students (or62.5%) in 2005 improved their scores on the
that the process of adhesionof cells from a liquid suspension onto solid substrates may be related to the free energy ofthe adhesion [2] (∆Gadh). ∆Gadh = γ cs − γ cl − γ sl (2)In Equation 2, the symbol γ represents the surface interfacial free energy and thesubscripts, c, s, and l refer to cell, solid, and liquid, respectively. Compare Equations 2and 1 – how are they similar? For net negative free energies (high γs), the conditions arefavorable for cellular adhesion, whereas, for a net positive free energy (low γs), theconditions are unfavorable (Figure 3).The cell-solid interfacial energy is dependent on the cell type and solid substrate, but itcan be calculated as [2] 2
removed from the toaster. The difference incooling behavior of the two metal toast samples is because the black toast is a better emitter ofradiation and when the power is cut off, the black toast is much warmer than the inner walls ofthe toaster, and air inside the toaster. The toast experiment presented here is a good in-class demonstration to motivate discussionof radiation heat transfer. After students attend lecture(s) on radiation, they return to thelaboratory for more extensive experimental investigation. Measurements in the follow-upexperiment include (1) comparison of additional surface properties, (2) use of thermocoupleswith radiation shields to measure the air temperature inside the toaster, (3) investigation ofcooling in different
sectionregion, provide the means to map the axial pressure distribution within the entire wind tunnel.This allows direct identification of the location(s) of significant mechanical energy losses,through comparison with ideal inviscid stream tube analysis associated with fluid mechanicsprinciples. In particular, the losses associated with the diffuser section become very apparent, incontrast with the inlet convergent section. Pressure recovery in the diffuser section is modeled ina very simple manner and compared directly with wind tunnel measurements. Fan powerrequirements associated with wind tunnel design are also included as part of the experimentation.The connection between diffuser loss behavior and boundary layer separation phenomenaassociated
electrophysiologyrelated simulations since it is possible to simulate hybrid circuits with both biological andsynthetic electronic components.Bibliography1. N. K. Sinha, Control Systems, New York: Holt, Rinehart and Winston, 1988.2. R. S. Tucker “Large-signal circuit model for simulation of injection-laser modulation dynamics,” IEE Proceedings, Part I, vol. 128, no. 5, pp. 180-184, 1981.3. B. Bunow, I. Segev, and J. Fleshman, “Modeling the electrical behavior of anatomically complex neurons using a network analysis program: excitable membrane,” Biol. Cybern., vol. 53, pp. 41-56, 1985.4. R. B. Szlavik, A. K. Bhuiyan, A. Carver, and F. Jenkins, “Neural-electronic inhibition simulated with a neuron model implemented in SPICE,” IEEE Transactions
large base of users of these systems could transfer text, dataand e-mail over phone-lines by a variety of services. 2. Early Web Browser. Mosaic, later named Netscape, was introduced in the early1990’s and Netscape (the company) went public in 1995. Netscape was free toindividuals and schools and was low-cost to business users. It brought graphics, images,music and video to PCs over telephone lines. Netscape also allowed experiments andsimulations to be viewed or controlled over the web in real time or near real-time.One of the earliest applications of this real-time use of browsers was a camera thatwatched a coffee pot at Cambridge University2. Some of the earliest controlledexperiments were introduced in 1994 at UC San Diego, in
semiconductor manufacturers.CAN is the basis of several sensor buses such as Devicenet, CANopen, J1939, and SmartDistributed System.CAN uses a twisted pair cable to communicate up to 40m at speeds 1Mbit/s without repeaters,and up to 1 km at 20 kbps speed. It can support up to 40 devices. CAN uses CSMA busarbitration. The CAN protocol, which corresponds to the data link and physical layers in theISO/OSI reference model [1], meets the real-time requirements of automotive applications.CAN data packets are 8 bytes long and use 11-bit packet identifier. A second version of CANcan support 29 bit identifier.Each CAN data frame consists of seven different bit fields shown in Figure 1. A data framebegins with the start-of-frame (SOF) bit. It is followed by an
distribution in non-prismatic beams and comparison of their Strength to Weight Ratio with the prismatic beams,2. To create an opportunity for collaborative research and design efforts between undergraduate Page 12.385.2 engineering student(s) and faculty, Proceedings of the 2007 American Society for Engineering Education Annual Conference & Exposition Copyright © 2007, American Society for Engineering Education3. To design and produce a cost-effective, reproducible apparatus with outstanding features.4. To incorporate (optional) use of ANSYS for comparison of the measured and calculated results,5. To make all
experiments, so that KCL and KVL are illustrated by thefirst one, given in the third laboratory session, and the transient part will be reserved for a laterlab, when more appropriate to the course material.Summary and conclusionThis experiment was a great success, in that it did produce the desired understanding in thestudents. It had the flavor of a 1960’s “happening”. The present plan is to continue using it, with Page 12.51.10some of the modifications suggested. We are presently considering an addition to illustrateKirchhoff’s voltage law, which we plan to combine with the current law part of the presentexperiment. The RC transient part will then
transferring in the year 2005-06. As of fall ’06, 84.4% of ASU students that had transferred to Georgia Tech since thebeginning of the program in mid-80’s, have either graduated from or are currently enrolled inone of the 5 different engineering majors. The range of the comparable figure denoting thesuccess rate for transfer engineering programs of all other institutions in Georgia is 72% to 92%,which validates the quality of our program. The students complete the core courses inhumanities, mathematics and science as well as some freshman and sophomore level engineeringcourses in order to have a seamless transfer to the junior level at Georgia Tech. As is customaryin most if not all undergraduate engineering programs, ASU also conducts an introductory
) that responded neutral. This might have influenced the students not to work with MOSFETs in their projects.ConclusionsThe traditional pre-defined diode labs are achieving their goal of providing a greater learningexperience of diodes and their applications, as opposed to the pre-defined transistor-circuit labswhich simply provide the basic foundation. The results of the survey suggest that the learningprocess is greatly enhanced by real life applications such as the student’s projects. Page 12.1081.8The predefined MOSFET labs must be revised to provide a greater learning experience of theconcepts and applications of MOSFET s. Having the
., “Retention 101: Where Robots Go … Students Follow,” Journal of Engineering Education, vol. 92, No. 1, January 2003, pp.85-90.2. http://www.darpa.mil/grandchallenge/index.asp, accessed 16 January 2007.3. McCarthy, B., The 4MAT System: Teaching to Learning Styles With Right/Left Mode Techniques: EXCEL, Inc., 1987.4. Kolb, D. A., Experiential Learning: Experience as the Source of Learning and Development, Prentice Hall, 1984.5. Harb, J. N., Durant, S. O., and Terry, R. E., “Use of the Kolb learning cycle and the 4MAT system in engineering education,” Journal of Engineering Education, vol. 82, No. 2, April 1993, pp. 70-77.6. Hotaling, L., Sheryll, R., and Stolking, R., “Discovery based learning in the engineering
duration) and fuel mixture (air-to-fuel ratio).The TTU vehicle uses a MotoTron ECU555-80 electronic control unit. The ECUcommunicates with the VCS using the CAN bus.Communications between most subsystems in the vehicle is over a CAN (controller areanetwork) bus. This communication is at two separate frequencies, 250Kb/s for the fuelcell, and 500Kb/s for the rest of the vehicle. A National Instruments PXI system is usedto monitor and adjust the various components of the communications system. A blockdiagram of the overall system is shown in Figure 2. Page 12.1079.5 4
distance education classes onwireless network configuration and security.References1. Mark Ciampa “ Security + Guide to Network Security Fundamentals, Second Edition” ISBN 0-619-21566-6 ©20052. Michael T. Simpson “ Hands-on Ethical Hacking and Network Defense” ISBN 0-619-21708-13. Allied Telesis Company. Available: http://www.alliedtelesyn.co.uk/site/files/documents/datasheet/MC1X_G.PDF downloaded January 17, 2007.4. Raza, I, “Containing emissions from a microprocessor module”, IEEE International Symposium on Electromagnetic Compatibility, Volume 2, 21-25 Aug. 2000 Page(s):871 – 876 vol.2.5. Phil Lunsford, Lee Toderick, "Firewalls for Remote Computer Labs", presented at the 2003 Convention of the National Association of Industrial
, the students were expected to install, configureand use intrusion detection systems and other network monitoring tools. For example, thestudents were required to practice the whole process of deploying and using the Snort intrusiondetection system (IDS), including downloading the Snort source code, compiling and installingthe program with gcc, configuring snort.conf, setting up rules, running Snort as packet logger,running Snort as network-based intrusion system and analyzing network traffic from trace files. Figure 1. Typical virtual machine(s) inside a Windows XP host operating system.A typical virtual machine setup7 for the students’ host OS is shown in Figure 1. A single FedoraLinux virtual machine ran on the student’s personal
. Page 12.1421.12Figure 9: The Centrifugal Pump used to demonstrate pump performance mapping Pump Performance Curve (at 2000 rpm) and System Resistance System Pump Perf. 12.00 10.00 8.00 Head (m) 6.00 4.00 2.00 0.00 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 Flow Rate (liters/s) Page 12.1421.13 Figure 10: Pump head and system resistance versus flow rateFan LawsEducational
AC 2007-232: COST-EFFECTIVE PROCESS CONTROL LAB SETUPPaul Villeneuve, University of Maine Paul L. Villeneuve, P.E. is an Assistant Professor in the School of Engineering Technology at the University of Maine. Page 12.410.1© American Society for Engineering Education, 2007AbstractMany four-year engineering technology programs require or offer course(s) thatemphasize examining the transient behavior of systems. The systems can be mechanical,electrical, chemical, or any other engineering discipline. These courses are generallyclassified as classes covering control system theory. Unfortunately, examining thetransient