The objective of the proposed research is to use MEMS technology to develop low profile power inductors with minimized eddy current losses to be used in high power density compact switching converters. Eddy currents arise in high-flux density metallic cores as increased switching frequencies of DC-DC converters cause the skin depth to be small compared with the core thickness. Laminations can reduce the eddy current losses but converters operating with switching frequencies in the MHz regime may require submicron laminations. Previous research has been done to fabricate inductors with micron-scale laminated cores for high frequency switching converters. To optimize the previous fabrication technique, an automated electroplating system was developed for the fabrication of thick magnetic cores comprising large number of submicron laminations without human intervention. Inductors with higher inductance, quality factor and power handling capacity have been realized compared to previously developed inductors. The inductors are characterized in terms of saturation behavior and power handling capability. A miniaturized DC-DC converter with power conversion capacity of 10 Watts has been demonstrated using the fabricated inductor.

The exhausting fossil fuels have stimulated heating researches on alternative renewable energy, as well as energy friendly studies. In a country like Taiwan, with high density on population and buildings, fresh cold air are supplied by either fan-coil units or air-condition units. However, with the lack of intelligent control and poor justification on thermal comfort, these machines failed to provide optimal thermal comfort, a situation that always leads to "excessive control" and energy waste as a consequence. Optimal thermal comfort is pursued by using PMV fuzzy control theory, along with thermal comfort monitoring system derived from LabView icon-control software. Thermal Comfort indices such as Predicted Mean Vote (PMV) and Predicted Percent of Dissatisfied (PPD) according to the ISO 7730 are used as indicators of thermal comfort.Sensors, conscious of variations in humidity and temperatures, can figure out PMV and PPD via LabView Online Real Time calculation, and then we can control the environment comfort around PMV=1 next by using fuzzy control theory as well as energy efficient equipment such as AC stepless fans and AC stepless heaters. Many comfort simulation cases, comfort simulation with random humidity and temperatures, and a 12-hour automatic control, were presented as three testing items to check whether PMV FUZZY algorithm is competitive in fixing the environment thermal comfort around PMV=1. The confirmation of this question can be proved by this empirical study.

In this thesis, the effects of Harmonics on the Top Oil and Hot Spot Temperatures of Power Transformers used in Turkish Electricity Transmission System have been investigated. Due to the solid state equipment, the harmonic levels increase. This effect raises the losses and temperatures in the transformer windings. None of the power transformers currently used in Turkey has measuring equipment suitable for measuring the Hot-Spot temperatures. In this study, a computer program is written in LABVIEW which measures the harmonics and calculates the temperatures in accordance with the methods recommended in IEEE Standards C57.110-1998 and C57.91-1995. Also for sample transformers the work has been verified by measuring the Top-Oil temperatures of the transformers and then comparing with the calculated results.

<p>The purpose of this thesis is to design a motion simulator for a rallycross racing environment. The focus on the design is how to mechanically create the G-forces and to model them. After that is done the visually seen motion has to be electronically implemented into the motion simulator, creating as realistic as possible an experience for the driver. A program called Aprot is written in National Instruments Labview to handle the communication between the software simulator and hardware signals. Alot of focus is paid on how to represent the much larger G-forces that are experienced on a real track in the limited capacity that a motion simulator allows. For this purpose several formulas are proposed, all of which have their benefits. The simulation environment used is Racer, a well documented racing simulation that is still in development by the creator Ruud van Gaal. Aprot continuously reads specific data from a file in Racer and uses the formulas to form them into reference values for mechanics. Aprot also has a PID-controller, so that the piston positioning can be optimized.</p><p>The original plan of this master thesis was to use Aprot on a full-scale pneumatic or hydraulic prototype. However, due to time and money constraints, this was not done, leaving this work as a theoretical base on which to build upon.</p>

<p>Vi fick i uppdrag av Swepart Transmission AB att med lämpliga metoder beräkna vindlaster på en godtycklig parabolantenn samt att konstruera en växellåda för att positionera den. Vi insåg i ett tidigt skede att vi var tvungna att ta fram vindlastfaktorerna laborativt. Och på grund av den begränsade tiden var vi tvungna att fokusera endast på vindlasterna på en parabolform.</p><p>Först uppskattade vi de maximala vindlaster som kunde uppkomma för att kunna dimensionera vår mätram. Sedan beräknade vi lastcellerna och konstruerade erforderlig elektronik. För att simulera vind monterades parabolen och dess mätram på ett fordon, mätningarna utfördes sedan på Uråsa flygfält. Efter mätningen kunde vi fastslå de sökta vindlastfaktorerna och deras ekvationer</p>

<p>Arbetet handlar om hur man med hjälp av LabVIEW 8.0 kan lösa olika uppgifter. Uppgifterna löses med hjälp av ett DAQ-kort. DAQ-kortet gör det möjligt att mata in signaler, som sedan behandlas efter behov i programmet och därefter skickas ut genom DAQ- kortet till olika komponenter som man vill styra. DAQ-kortet klarar att behandla både analoga och digitala signaler. LabVIEW 8.0 och dess historia, DAQ-kortet samt de olika processerna/uppgifter beskrivs mer utförligt i arbetet.</p>

A mass manufacturable impedance based, palladium doped porous silicon sensor, was fabricated for hydrogen detection. The sensor was built using electrochemical etching to produce mesoporous silicon. Four nanometers of palladium was defused directly into the porous silicon and another four nanometers of Pd was deposited on the defused surface to enhance sensing. The sensor was tested in a sealed chamber in which the impedance was measured while hydrogen in nitrogen was ranged from 0-2 percent. Unlike conventional hydrogen sensors this sensor responded at room temperature to changes in hydrogen concentration. The electrical impedance response due to adsorption and desorption of hydrogen reacted relatively quickly due to the nanoparticle nature of palladium diffusion in and Pd evaporation on porous silicon.

The purpose of this thesis is to design a motion simulator for a rallycross racing environment. The focus on the design is how to mechanically create the G-forces and to model them. After that is done the visually seen motion has to be electronically implemented into the motion simulator, creating as realistic as possible an experience for the driver. A program called Aprot is written in National Instruments Labview to handle the communication between the software simulator and hardware signals. Alot of focus is paid on how to represent the much larger G-forces that are experienced on a real track in the limited capacity that a motion simulator allows. For this purpose several formulas are proposed, all of which have their benefits. The simulation environment used is Racer, a well documented racing simulation that is still in development by the creator Ruud van Gaal. Aprot continuously reads specific data from a file in Racer and uses the formulas to form them into reference values for mechanics. Aprot also has a PID-controller, so that the piston positioning can be optimized. The original plan of this master thesis was to use Aprot on a full-scale pneumatic or hydraulic prototype. However, due to time and money constraints, this was not done, leaving this work as a theoretical base on which to build upon.

Data acquisition and image reconstruction tasks of METU Magnetic Resonance Imaging (MRI) System are used to be performed by a 15 year-old technology. This system is incapable of transmitting control signals simultaneously and has memory limitations. Control software is written mostly in assembly language, which is hard to modify, with very limited user interface functionality, and time consuming. In order to improve the system, a LabVIEW based data acquisition system consisting of a NI-6713 D/A card (to generate RF envelope, gradients, etc.) and a NI-6110E A/D card (to digitize echo signals) from National Instruments is programmed and integrated to the system, and a pulse sequence design, data acquisition and image reconstruction front-end is designed and implemented. Apart from that, a new method that can be used in Magnetic Resonance Current Density Imaging (MRCDI) experiments is proposed. In this method the readily built gradient coil of the MRI scanner is utilized to induce current in the imaging volume. Magnetic fields created by induced currents are measured for various amplitude levels, and it is proved that inducing current with this method is possible.

Στην παρούσα διπλωματική εργασία παρουσιάζεται τμήμα ενός αυτοματισμού μιας βιομηχανικής διεργασίας. Πιο συγκεκριμένα, αφορά το γέμισμα φιαλών και την εποπτεία τους. Για τον έλεγχο του αυτοματισμού χρησιμοποιείται ένας προγραμματιζόμενος λογικός ελεγκτής (PLC) της σειράς SIMATIC S7 300 της Siemens, ενώ η εποπτεία θα γίνεται μέσω Ηλεκτρονικού Υπολογιστή και της εφαρμογής LABVIEW 2009 με την χρήση του NI OPC Servers της National Instruments. Για να ξεκινήσει η κάθε παρτίδα παραγωγής, ο χειριστής οφείλει να εκτελέσει τις εξής ενέργειες : 1) Να ελέγξει αν έχει στάθμη το tank. 2) Να τοποθετήσει φιάλες στο αστέρι. 3) Πιέζει το reset (μπλε μπουτόν), το μηχάνημα είναι έτοιμο και βρίσκεται σε κατάσταση standby. 4) Πιέζει το start (πράσινο μπουτόν), το μηχάνημα είναι ενεργοποιημένο και αρχίζει το γέμισμα. Στο πρώτο μέρος της γραπτής εργασίας, κεφάλαιο 1, κεφάλαιο 2, γίνεται μία εισαγωγή στα PLCs όσον αφορά την εγκατάσταση, διαμόρφωση, δομή, τον προγραμματισμό και τη λειτουργία τους. Οι βασικές αρχές που αναφέρονται ισχύουν σε γενικές γραμμές για όλα τα PLCs, αλλά οι αναφορές είναι στοχευμένες στη σειρά S7-300 της Siemens μια και αυτός είναι ο τύπος του PLC με το οποίο έχει υλοποιηθεί το πρακτικό μέρος της ειδικής επιστημονικής εργασίας. Στο δεύτερο μέρος, κεφάλαιο 3, κεφάλαιο 4, κεφάλαιο 5 γίνεται αναφορά στον προγραμματισμό και τη διαμόρφωση του PLC, μέσω του λογισμικού πακέτου STEP-7 – Simatic Manager. Στο τρίτο μέρος, κεφάλαιο 6, κεφάλαιο 7, κεφάλαιο 8 γίνεται αναφορά στον προγραμματισμό και τη διαμόρφωση του HMI, μέσω του λογισμικού πακέτου LABVIEW 2009 και την χρήση του NI OPC Servers της National Instruments. / In this thesis it is presented a part of an automatism of industrial process. More specifically it has to do with the filling of bottles and their supervision. For the test of the automatism it is used a programming logic control (PLC) of the series SIMATIC S7-300 of Siemens while the check will be done via both a PC and the application of Labview 2009 by the use of NI OPC servers of National Instrument. In order to begin every part of production , the operator has to carry out the following actions: 1) To check if the tank has the right level. 2) To put the bottles to the star. 3) To press the reset (the blue button) the machine is ready and is placed in the standby situation. 4) To press the start (green button), the machine is in function and the filling is starting. In the first part of this thesis, in unit 1, unit 2, is made an introduction for PLC as far as the installation is concerned, the formation, the structure the programming and their functions. The basic principles which are being referred are in force generally for the all PLC, but the references are aimed in the series S7-300 of Siemens, as this is the main type of PLC by which the practical part of this thesis has been created. In the second part, in unit 3, unit 4, unit 5, is made a mention the programming and the formation of PLC, through the software Step 7 Simatic Manager. In the third part, unit 6, unit 7, unit 8 is made a mention on the programming and the formation of HMI, through the software Labview 2009 and the use of NI OPC Servers of National Instruments.