The reluctance torque of switched reluctance motor could drive the rotor directly. Rotor doesn¡¦t need to be made from permanent magnet and the demagnetization and heat emission problems can be avoided. There are also a lot of advantages, such as the low cost, high efficiency, high stability and high hot emission, make it very attractive to the engineers and researchers. The dual-flange-pole rotor structure will induce non-linear magnetic filed in the air gap between armature and rotor, so the reluctance torque is not easy to handle. The switched reluctance motor is considered hard to control at the early stages of development. In recently years, with the rapid improvement of power electronic devices and microprocessor chips, the engineers and researchers pay more attentions to overcome the difficulties encountered in both the software and hardware step by step. It can now exert the motor¡¦s capability to contend with the inductor motor and the alternating current motor. Furthermore, it is more advantageous than others in the high energy density, high temperature and adverse circumstances. It has obviously caught caused the industry¡¦s attention and the academia's research interests. The work of this is to design and develop a drive system for the switched reluctance motor drive system by using the 32-bit floating point Digital Signal Processor, and operate it in coordination with the peripheral circuits. Finally, the study will integrate the graph control programming to design a monitoring and control system with Man-Machinery Interface (MMI) for monitoring voltage, current and speed of the switched reluctance motor drive system.

Due to the differences in batteries of a series-connected battery bank, the restored capacity in each battery may not be the same when being charged. In order to extend battery cycle life, the charger for the battery bank must have the capability of charging equalization. This thesis proposes a non-dissipative balance charging circuit based on buck-boost topology for a series-connected battery bank. Each battery in a battery bank is associated with a buck-boost converter. This topology can efficiently alleviate the unbalance of charge among batteries by taking off the charge from the affluently charged batteries and then allotting to those insufficient ones. To accomplish this complicated and accurate control, a digital signal processor (DSP) with sensors and interface circuits is adopted. It monitors the variations of battery voltages, activates the associated buck-boost converter, and adjusts the duty ratio of the converter to regulate the energy to be released. In virtue of the adoption of digital control kernel, the control circuit can be simple and the control flexibility can be favored. A battery bank with four series connected lead-acid batteries is used for illustrating the operating behavior and describing the operation modes of the balance charging circuit. The results of experiments convincingly advocate the applicability of the proposed approach.

The design of this thesis intends to present that 120¢X Communication and Flux-Weakening Control techniques can be successfully applied to a Digital Signal Processor (DSP) together with the hardware structure of an inverter. Experimental results are shown that utilizing IPM Motor as Drive Motor of Electric Vehicle, 120¢X Communication techniques can reduce ripple torque and maintain the stability of output torque. Furthermore, through Phase advanced control motor, it enables a higher output torque during the mid-lower speed. Using Flux-Weakening Control helps motor from higher output speed to the highest output speed. Moreover, the security of motor driver can be enhanced by designing circuit, which prevents over voltage. The function of motor driver will be better due to the decreased hardware size and increased accuracy that are the advantage of writing DSP scripts to analyze rotor speed.

This diploma thesis intends to describe some of identification methods applicable to the induction motor resulting in the profit of some of these parameters by means of mathematical analysis. Afterwards these methods are simulated in MATLAB/Simulink and in the final part algorithms of these methods are consequently implemented to the digital signal processor.

<p>Att ansluta en digital signalprocessor kräver ett omfattande arbete. Innehållet i denna rapport sammanfattar teoretiska metoder för att integrera den digitala signalprocessorn ADAU1701 i talförstärkaren MMT-4, utvecklad av företaget Xena Medical. Arbetet har till största delen bestått i att finna en lämplig DSP och studera dess datamanual för att anpassa den till talförstärkaren.</p><p>Mycket av rapporten sammanfattar beräkningar av komponentvärden och anpassning av ADAU1701 för MMT-4:s behov. ADAU1701 beskrivs utifrån det så kallade <em>selfboot-</em>läget där processorn kan arbeta som fristående processor.</p> / <p>This thesis describes how to integrate a digital signal processor (DSP) in the speech amplifier MMT-4. This is to improve the sound quality and prevent feedback. Much of the task consisted of selecting a suitable DSP design and components to get it work as a standalone processor in MMT-4. Following this report gives the reader an introduction how to design systems with a DSP and a full description of the DSP ADAU1701.</p>

Os medidores de energia elétrica estão deixando de ser simples instrumentos de aplicação dedicada para se tomarem instrumentos extremamente funcionais. Desde a sua invenção, os medidores vêm sofrendo alterações de acordo com os recursos tecnológicos da época e as exigências de mercado. Atualmente, os processadores digitais de sinais têm sido amplamente empregados nesta área, permitindo a integração de uma série de funções em um único equipamento, além da implementação de algoritmos mais complexos. Estas funções geralmente incluem o cálculo de uma variedade de parâmetros elétricos, comunicação remota, integração com sistemas digitais e outras. Este trabalho apresenta um estudo e o desenvolvimento de um medidor de energia elétrica baseado no processador digital de sinais DSP56002 da Motorola. Entre as funções que são incorporadas ao medidor, destaca-se o monitoramento da qualidade da energia elétrica, visto que esta será uma tendência futura. / Electric energy meters have been changing from simple instruments for dedicated applications to very functional ones. Since their invention, the meters has changed accordingly to the technology resources and market requirements. Nowadays, the digital signal processors have been widely employed in this area, allowing a huge amount of functions to be integrated into only one instrument, besides of the implementation of more complex algorithms. Such functions usually include evaluation of many electrical parameters, remote communication, connection to digital systems and others. This work is about a study and a development of an electric energy meter based on the digital signal processor DSP56002 by Motorola. Among the functions that are incorporated to the meter, it points out the monitoring of electric power quality, once it will be a future trend.

Os medidores de energia elétrica estão deixando de ser simples instrumentos de aplicação dedicada para se tomarem instrumentos extremamente funcionais. Desde a sua invenção, os medidores vêm sofrendo alterações de acordo com os recursos tecnológicos da época e as exigências de mercado. Atualmente, os processadores digitais de sinais têm sido amplamente empregados nesta área, permitindo a integração de uma série de funções em um único equipamento, além da implementação de algoritmos mais complexos. Estas funções geralmente incluem o cálculo de uma variedade de parâmetros elétricos, comunicação remota, integração com sistemas digitais e outras. Este trabalho apresenta um estudo e o desenvolvimento de um medidor de energia elétrica baseado no processador digital de sinais DSP56002 da Motorola. Entre as funções que são incorporadas ao medidor, destaca-se o monitoramento da qualidade da energia elétrica, visto que esta será uma tendência futura. / Electric energy meters have been changing from simple instruments for dedicated applications to very functional ones. Since their invention, the meters has changed accordingly to the technology resources and market requirements. Nowadays, the digital signal processors have been widely employed in this area, allowing a huge amount of functions to be integrated into only one instrument, besides of the implementation of more complex algorithms. Such functions usually include evaluation of many electrical parameters, remote communication, connection to digital systems and others. This work is about a study and a development of an electric energy meter based on the digital signal processor DSP56002 by Motorola. Among the functions that are incorporated to the meter, it points out the monitoring of electric power quality, once it will be a future trend.

Att ansluta en digital signalprocessor kräver ett omfattande arbete. Innehållet i denna rapport sammanfattar teoretiska metoder för att integrera den digitala signalprocessorn ADAU1701 i talförstärkaren MMT-4, utvecklad av företaget Xena Medical. Arbetet har till största delen bestått i att finna en lämplig DSP och studera dess datamanual för att anpassa den till talförstärkaren. Mycket av rapporten sammanfattar beräkningar av komponentvärden och anpassning av ADAU1701 för MMT-4:s behov. ADAU1701 beskrivs utifrån det så kallade selfboot-läget där processorn kan arbeta som fristående processor. / This thesis describes how to integrate a digital signal processor (DSP) in the speech amplifier MMT-4. This is to improve the sound quality and prevent feedback. Much of the task consisted of selecting a suitable DSP design and components to get it work as a standalone processor in MMT-4. Following this report gives the reader an introduction how to design systems with a DSP and a full description of the DSP ADAU1701.

The objective of this thesis is to design and implement a velocity-stabilizing driver for permanent magnet synchronous motor. The research presents how to achieve high efficiency in stabilizing overall velocity for a permanent magnet synchronous motor. In order to drive the integral system, there are six steps square-wave starting device, sine-wave driver, estimation of magnetic angle, velocity feedback and current feedback control circuits designed. A test platform is built by Microchip-made dsPIC33FJ128MC804 digital signal processor used as a control core. ¡§Simulink¡¨ simulator is used during the laboratory test. The simulation results are compared with those of experiments in order to verify the achievement of excellent performance of Robust Integral Velocity-stabilizing Controller on Permanent Magnet Synchronous Motor Driver.

Video compression is a key technology used in several multimedia applications. Improvements in the compression techniques together with the increasing speed and optimized architecture of the new family processors enable us to use this technology more in real time systems. H.264 (also known as MPEG-4 Part 10 or AVC - Advanced Video Coding), is the latest video coding standard which is noted for achieving very high data compression. While H.264 is superior to its predecessors, it has a very high computational complexity which makes its costly for real time applications. Thus, in order to perform video encoding with satisfactory speed there is an obvious need for reducing the computational complexity. New algorithms were developed for this purpose. The developed algorithms were implemented on Texas Instrument TMS320C64x family to be able to fulfill the requirement in optimized signal processing hardware with low power consumption which arises from the computational complexity and the need for portable devices in video processing technology. With the new algorithms developed, a computation reduction of 55% was achieved without loosing perceptual image quality. Furthermore, the algorithms were implemented on a DSP along with the networking functionality to obtain a video streaming system. The final system may be used in a wide range of fields from surveillance systems to mobile systems.