Dissertations / Theses on the topic 'Fields of Research – 290000 Engineering and Technology – 290900 Electrical and Electronic Engineering'
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McGillan, Glen. "The design of an electric fence fault-finder : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering in Computer Systems Engineering at Massey University, Albany, New Zealand." Massey University, 2009. http://hdl.handle.net/10179/1161.
Full textSowden, Bradley Claude. "The performance of DS-CDMA cellular systems with variable-bit-rate traffic." Thesis, University of Auckland, 2009. http://hdl.handle.net/2292/5211.
Full textZhang, Heng. "Otahuhu B Power Station condenser in-leakage analysis and condensate monitoring system : a thesis presented in partial fulfilment of the requirements for the degree of Master of Engineering in Electronics Engineering at Massey University, Wellington, New Zealand." Massey University, 2008. http://hdl.handle.net/10179/950.
Full textWang, Kevin I.-Kai. "Multi-agent based ambient intelligence platform." Thesis, University of Auckland, 2009. http://hdl.handle.net/2292/5212.
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Sen, Gupta Gourab. "Autonomous agents in a dynamic collaborative environment : a thesis presented in partial fulfilment of the requirements for the degree of PhD in Engineering at Massey University, Palmerston North, New Zealand." Massey University, 2008. http://hdl.handle.net/10179/811.
Full textNoble, Frazer K. "Wireless vehicle presence detection using self-harvested energy : a thesis in partial fulfilment of the requirements for the degree of Master of Engineering in Mechatronics, Massey University, Albany, New Zealand." Massey University, 2009. http://hdl.handle.net/10179/1078.
Full textThrimawithana, Duleepa J. "A novel electric fence energizer : design and analysis." Thesis, University of Auckland, 2008. http://hdl.handle.net/2292/4264.
Full textBerber, Stevan M. 1950. "Methods and techniques for parameter and distribution function estimation in cascaded digital channels with and without memory." 2001. http://hdl.handle.net/2292/1958.
Full textFuture telecommunication networks will employ digital transmission techniques. Such networks will provide a number of benefits including the ability to integrate voice and non-voice messages. The transmission channel of this network can be represented by a cascaded channel composed of a number of elementary channels connected in series. Therefore the modelling of such a channel is of particular interest. The influence of noise and other impairments in the cascaded binary channel cause errors which may be represented by a binary signal called the error sequence. Consequently, an important step in digital channel modelling is estimation of parameters and distribution functions which characterise the statistical properties of error sequences in the channel. Thus, the development of efficient methods for this estimation is a problem of long term interest which should be properly solved. This thesis presents methods and techniques for parameter (primarily the probability of error) and distribution function (primarily the error gap complementary distribution function) estimation using the error sequences obtained by measurement or simulation in elementary or cascaded channels. Theoretical analysis and testing confirm that it is possible to control the accuracy and reliability of estimation. Two principal and practical methods for the probability of error estimation are developed: the modified Monte Carlo method (MMC); and the method based on Chebyshev inequality (MCI). In contrast to the traditional Monte Carlo method based on classical statistics, the methods developed in this thesis aim to specify the sample size required to achieve the desired accuracy. The methods developed are based on the dependence of the sample size on the estimated value of a parameter being estimated. Hence the sample size is a random variable and the confidence limits factor (which specifies the width of confidence interval in respect to the estimated value) is a constant. Based on these methods, this thesis proposes and demonstrates two techniques for parameter estimation. The traditional Monte Carlo method has been primarily used for the probability of error estimation in channels without memory. In this thesis the capabilities of this method are extended to the case of estimating the probability of error in channels with memory and cascaded channels. However, even with this extension, this method is not practical due to its complexity and limitations on the qualification and quantification of the accuracy and reliability of estimation. Also, the extended method is unable to satisfactorily estimate the probability of error in cascaded channels with memory; nor could it improve the speed of the estimation process. Two methods and two techniques for distribution function estimation are developed in this thesis. They are demonstrated by estimating the error gap complementary functions of simulated data. For this purpose, simulators of binary channels with and without memory have been developed. The methods and techniques are characterised by their simplicity in application; ability to quantify the accuracy and reliability; time efficiency; and real time capability. The wider application of the methods and techniques developed in this thesis are demonstrated on three examples: a distribution function estimation using data obtained by indoor wideband radio propagation measurement; BER characteristics measurement; and measurement of the residual probability of error in transmission systems using error correcting codes. From the results obtained in the thesis some recommendations for future work in the field of digital channel modelling and simulation are discussed.
Smith, Russell L. "Intelligent motion control with an artificial cerebellum." 1998. http://hdl.handle.net/2292/2130.
Full textGarnett, M. T. "Development and prototyping of a solid state lighting product for architectural and accent applications : a thesis presented in fulfilment of the requirements for the degree of Master of Product Development in Technology at Massey University, School of Engineering & Technology, Albany campus, New Zealand." 2009. http://hdl.handle.net/10179/1411.
Full textEdney, Daniel B. L. "Control and optimisation of coagulant dosing in drinking water treatment." 2005. http://hdl.handle.net/2292/1948.
Full textCorrect coagulant dosage is necessary for the efficient operation of conventional drinking water treatment plants, yet no accurate or automated way of determining this exists. Streaming current (SC) is a measurement of charge on particles in water and is useful in feedback control of coagulant dosage. Analysis of the movement of change within a SC sensor can provide some explanation of its slow response, while signal processing utilising Fourier analysis improves the instrument's bandwidth. Presently inaccurate manual jar tests are the only way determine the SC required for best coagulation. An online automated jar tester is presented to improve on this. It uses an automatic sampling system that takes a sample from the process stream. An optimisation algorithm makes repeated step adjustments to the SC set point and gradually moves it in the direction of improving jar test results. The system was evaluated on both a small-scale model and a full-scale plant. Noise in the test measurements means the optimal set point cannot be located accurately enough, but the results indicate that this is possible. Greater accuracy would allow optimisation of turbidity and costs for multiple chemicals. A representative neural network model can be made of the dynamic relationship between coagulant dosage and streaming current in a scale model, with an alkali dosed to simulate a disturbance. In a rapid mixer, the measured response is significantly slower than the true response. Several common types of linear controller are designed and their performance at set point tracking and disturbance rejection is compared on this system. Model predictive control with a Kalman filter performs best in these tests, while the self-tuning regulator has benefits when the rate of set point change is slower. A non-linear feed-forward radial basis function network that adapts to the system's steady-state inverse can effectively augment a linear controller for this system. Adaptation rules based on vector eligibility are derived from dynamic back-propagation and extended to the general dynamic non-linear case. This can result in a useful and efficient feed-forward neural controller for dosing systems that can be represented by a Wiener model.
Handley, P. G. "Spread spectrum switching: a low noise modulation technique for PWM inverter drives." 1990. http://hdl.handle.net/2292/2230.
Full textHiggie, G. R. "Analysis of the families of variable length self synchronising codes called T-codes." 1991. http://hdl.handle.net/2292/2232.
Full textSowerby, K. W. (Kevin W. ). "Outage probability in mobile radio systems." 1989. http://hdl.handle.net/2292/2516.
Full textKnowles, David John. "A separate texture/edge image coding system." 1990. http://hdl.handle.net/2292/2515.
Full textHuang, Dan 1980. "Robust control for uncertain networked control systems with random delays." 2008. http://hdl.handle.net/2292/3372.
Full textMurray, Phillip Edward. "Designing sustainable distributed generation systems for rural communities : an application of optimisation modelling and decision analysis to include sustainability concepts and uncertainty into design optimality : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Agricultural Engineering (Renewable Energy) at Massey University, Palmerston North, New Zealand." 2005. http://hdl.handle.net/10179/1566.
Full textJeong, Jinsoo. "A kepstrum approach to real-time speech enhancement : thesis for the degree of Doctor of Philosophy, Information Engineering, Institute of Technology and Engineering, Massey University at Albany." 2007. http://hdl.handle.net/10179/1738.
Full textThis research is mainly concerned with a robust method for an improved performance of a real-time speech enhancement and noise cancellation in a real reverberant environment. Therefore, the thesis titled, "A Kepstrum Approach to Real-Time Speech Enhancement" presents an application technique of a kepstrum method to a speech enhancement method. The kepstrum approach is based on a fundamental theory of kepstrum analysis, which gives a mathematical construct to the application of a speech enhancement. kepstrum analysis is applied to the system identification application of unknown acoustic transfer functions between two microphones. This kepstrum method provides a mathematical representation with FFT based processing and is independent of acoustic path model order. The front-end application of the kepstrum method to speech enhancement methods provides an improved performance in speech enhancement and noise cancellation with several favourable effects.
Sudol, Peter. "Modelling and analysis of hydrogen-based wind energy transmission and storage systems : HyLink system at Totara Valley : a thesis presented in partial fulfilment of the requirements for the degree of Master of Technology in Energy Management at Massey University, Palmerston North, New Zealand." 2009. http://hdl.handle.net/10179/786.
Full textCheng, Octavian. "Embedded speech recognition systems." 2008. http://hdl.handle.net/2292/3279.
Full textBridger, Andrew B. "Increasing the spectral efficiency of contunous phase modulation applied to digital microwave radio : a resource efficient FPGA receiver implementation : [a thesis presented in partial fulfilment of the requirements for the degree of Master of Engineering in Electronics and Computer Systems Engineering at Massey University, Palmerston North, New Zealand ] EMBARGED UNTIL 1 JUNE 2012." 2009. http://hdl.handle.net/10179/1366.
Full textJiang, Tianyang Ted. "The development of a pulse RF high power amplifier for a portable NMR spectrometer : a thesis presented in partial fulfillment of the requirement for the degree of Master of Engineering at Massey University." 2008. http://hdl.handle.net/10179/707.
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