This work describes the design, construction, and testing of a digital-to-analog function generator and multiplier for analog computation and non-linear system simulation. The unit consists of two separate channels each of which is fed by a punched paper tape. Functions (of time) are represented on the tapes in binary code and are read into the machine photoelectrically. In one channel, voltage sources of constant value but of either polarity are switched into the parallel branches of a ladder network in accordance with the incoming digital information. As a result of the particular choice of resistor values in the ladder network the voltage at one end of the resistive network is proportional to the binary number signified by the polarity combination of the voltage sources. In the other channel the function represented on the tape controls the polarities of the voltage sources, and the magnitudes of the source voltages are changed according to a second function, which results in an output voltage proportional to the product of the two functions. This second function may be generated independently in the first channel, or it may be an external computer variable. One level on each tape is reserved for the generation of control pulses which can be used to de-energize the reset relay in the computer, i.e. to initiate the compute mode. The variable tape speed and gain controls greatly enhance the versatility of the device and render it very useful in analog computer simulation studies. Error analyses of two resistive decoding networks are outlined and their results are considered in the final choice of the decoding network. Complete circuit diagrams with short explanations of their operation are presented. Results of tests on accuracy, speed and general performance are summarized and illustrated. / Applied Science, Faculty of / Electrical and Computer Engineering, Department of / Graduate

Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1903. / The entire thesis text is included in file. Typescript. Illustrated by author. C. M. Daily determined to be Cornelius Mark Daily from "Forty-First Annual Catalogue. School of Mines and Metallurgy, University of Missouri". Title from title screen of thesis/dissertation PDF file (viewed January 29, 2009)

published_or_final_version / abstract / Electrical and Electronic Engineering / Doctoral / Doctor of Philosophy

Typescript, etc. / Digitized by Kansas Correctional Industries

Lee Ming Ho. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 78-80). / Abstracts in English and Chinese. / Chapter Chapter 1 --- Introduction --- p.1 / Chapter 1.1. --- Background on development of AA size micro power generator --- p.1 / Chapter 1.1.1. --- Brief introduction --- p.1 / Chapter 1.1.2. --- Proposed micro power generator for wireless applications --- p.2 / Chapter 1.2. --- Literature survey --- p.3 / Chapter 1.2.1. --- Comparison of other energy sources --- p.3 / Chapter 1.2.2. --- An overview of research on electromagnetic micro power generator --- p.5 / Chapter Chapter 2 --- Principle of Micro Power Generator --- p.7 / Chapter 2.1 --- Design objective ofAA size micro power generator --- p.7 / Chapter 2.2 --- Faraday ´ةs Law of induced current --- p.9 / Chapter 2.3 --- Modal for the micro power generator system --- p.10 / Chapter 2.4 --- Design of the micro power generator --- p.13 / Chapter 2.5 --- Integrated power cell --- p.20 / Chapter Chapter 3 --- MEMS Resonator --- p.23 / Chapter 3.1. --- Design of the micro resonator --- p.23 / Chapter 3.1.1. --- Introduction to micro resonator --- p.23 / Chapter 3.1.2. --- Selection of material --- p.24 / Chapter 3.1.3. --- Different modes of vibration --- p.25 / Chapter 3.2. --- Laser Micro-machining --- p.26 / Chapter 3.3. --- MEMS Fabricated Spring --- p.28 / Chapter 3.3.1. --- Introduction of SU-8 based electroplating technique --- p.28 / Chapter 3.3.2. --- Fabrication process --- p.31 / Chapter Chapter 4 --- Characteristic of AA Size Micro Power Generator --- p.33 / Chapter 4.1. --- Experiment on a single micro power transducer --- p.36 / Chapter 4.1.1. --- Testing a single transducer without loading --- p.37 / Chapter 4.1.2. --- Testing a single transducer connected with a power management circuit --- p.38 / Chapter 4.1.3. --- Testing a single transducer with power management circuit and a 100kΩ resistor --- p.39 / Chapter 4.1.4. --- Summary of experiments on the micro power transducer --- p.40 / Chapter 4.2. --- Experiment on finding a way to increase power output --- p.41 / Chapter 4.3. --- Experiment for connecting two micro power transducers --- p.43 / Chapter 4.3.1. --- Testing on two micro power transducers connected in series --- p.44 / Chapter 4.3.2. --- Testing on combined micro power transducers with power management circuit --- p.47 / Chapter 4.4. --- Experiment on the integrated AA size micro power generator --- p.49 / Chapter 4.4.1. --- Interaction of magnetic dipole between two micro power transducers --- p.50 / Chapter 4.4.2. --- AA size micro power generator under varying input vibration frequencies --- p.52 / Chapter Chapter 5 --- Simulation and Analysis --- p.55 / Chapter 5.1. --- FEA Modeling of the MEMS Resonators --- p.55 / Chapter 5.2. --- Micro power generator system modeling --- p.57 / Chapter 5.3. --- Optimization --- p.60 / Chapter Chapter 6 --- Applications --- p.63 / Chapter 6.1. --- Wireless Temperature Sensing System --- p.64 / Chapter 6.2. --- Measurement of car vibration for noval applications --- p.70 / Chapter 6.2.1. --- Measurement of car vibration in stationary condition --- p.71 / Chapter 6.2.2. --- Measurement of car vibration traveling in The Chinese University of Hong Kong (CUHK) --- p.72 / Chapter 6.2.3. --- Measurement of car vibration traveling in rough pattern road (Tai Po Road) --- p.73 / Chapter 6.3. --- Human motion analysis --- p.74 / Chapter Chapter 7 --- Conclusion --- p.76 / Reference --- p.78 / Appendix --- p.81

Thesis--M. Phil., University of Hong Kong, 1987.

published_or_final_version / Electrical Engineering / Master / Master of Philosophy

No description available.

Thesis (PhDInformationEngineering )--University of South Australia, 2002.

Thesis (MEng)--University of South Australia, 1997