A Microprocessor-based multivariable interactive control system

This study outlines the various types of control systems and reviews the necessary mathematical techniques to solve the problem of multivariable interactive control. The characteristics as well as the state representation for control processes involving either p or v type canonical structures are discussed. Next, the characteristics of multivariable interactive discrete control systems are discussed in detail. The advantages of flexibility and speed of microprocessors are used as powerful tools to implement a microprocessor-based system can be employed to control discrete processes. To demonstrate a practical application of a microprocessor-based system in a multivariable interactive discrete process, the algorithm and software (Assembly Language) is developed for a special engine control system selected as the model

Embedded Processor Design and Implementation of CAM

Microprocessors are the heart of all “smart” devices, whether they be electronic devices or otherwise. Their smartness comes as a direct result of the decisions and controls that microprocessors make. For example, we usually do not consider a car to be an electronic device. However, it certainly has many complex, smart electronic systems, such as the anti-lock brakes and the fuel-injection system. Each of these systems is controlled by a microprocessor. Yes, even the black, hardened blob that looks like a dried-up and pressed-down piece of gum inside a musical greeting card is a microprocessor. There are generally two types of microprocessors: general-purpose microprocessors and dedicated microprocessors. General-purpose microprocessors, such as the Pentium CPU, can perform different tasks under the control of software instructions. General-purpose microprocessors are used in all personal computers. Dedicated microprocessors, also known as application-specific integrated circuits (ASICs), on the other hand, are designed to perform just one specific task. For example, inside your cell phone, there is a dedicated microprocessor that controls its entire operation. The embedded microprocessor inside the cell phone does nothing else but controls the operation of the phone. Dedicated microprocessors are, therefore, usually much smaller than and not as complex as general-purpose microprocessors. However, they are used in every smart electronic device, such as the musical greeting cards, electronic toys, TVs, cell phones, microwave ovens, and anti-lock break systems in your car. From this short list, I’m sure that you can think of many more devices that have a dedicated microprocessor inside them. Although the small dedicated microprocessors are not as powerful as the general-purpose microprocessors, they are being sold and used in a lot more places than the powerful general-purpose microprocessors that are used in personal computers. Our projects aim at designing an embedded processor and implement the embedded processor for a particular application and the project is divided into following modules 1) Designing the basic component of the microprocessor such as • ALU • RAM • ROM • REGISTERS • DATA PATH • CONTROL PATH 2) Component design as per the fixed size. 3) Connect the data path and control path 4) Fixed the number of instruction required 5) Implementation of CAM In order to analyze the performance issues, and testing we will implement our code in FPGA / ASI

Organic expander action at lead electrodes

The instrumentation for digitally driven electrochemical experiments has been developed. Software has been written for experimental control and high speed data aquisition. The digital control methods were successfully used in the study of the electrochemistry of the porous lead electrode (the lead-acid battery negative plate), over an extended temperature range. The effects of a number of commercially pertenent additives have been studied at reduced temperatures. These reaction enhancing materials (expanders) have been studied in detail on both planar and porous lead electrode in sulphuric acid in the range 1M to 5M. Deductions concerning the energetics of the reactions have been made from experimental results. The modes of action of certain expanders are discussed. It was concluded that on the plane lead surface solution phase expander materials modify the mechanism of the lead sulphate electrocrystallisation - the current limiting reaction. This was an effect on the solid state process although a solution Pb2+ process was identified (for the first time) in battery strength acid. Electrode incorporated organic expander materials act by modifying pore geometies and reaction penetration depths. The current transients due to electrocrystallization in porous lead are very complex and require very sophisticated modelling techniques to provide a useful fit

The distributed computer system

This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University

Real-time analysis of video signals

Many practical and experimental systems employing image processing techniques have been built by other workers for various applications. Most of these systems are computer-based and very few operate in a real time environment. The objective of this work is to build a microprocessor-based system for video image processing. The system is used in conjunction with an on-line TV camera and processing is carried out in real time. The enormous storage requirement of digitized TV signals and the real time constraint suggest that some simplification of the data must take place prior to any viable processing. Data reduction is attained through the representation of objects by their edges, an approach often adopted for feature extraction in pattern recognition systems. A new technique for edge detection by applying comparison criteria to differentials at adjacent pixels of the video image is developed and implemented as a preprocessing hardware unit. A circuit for the generation of the co-ordinates of edge points is constructed to free the processing computer of this task, allowing it more time for on-line analysis of video signals. Besides the edge detector and co-ordinate generator the hardware built consists of a microprocessor system based on a Texas Instruments T.US 9900 device, a first-in-first-out buffer store and interface circuitry to a TV camera and display devices. All hardware modules and their power supplies are assembled in one unit to provide a standalone instrument. The problem chosen for investigation is analysis of motion in a visual scene. Aspects of motion studied concern the tracking of moving objects with simple geometric shapes and description of their motion. More emphasis is paid to the analysis of human eye movements and measurement of its point-of-regard which has many practical applications in the fields of physiology and psychology. This study provides a basis for the design of a processing unit attached to an oculometer to replace bulky minicomputer-based eye motion analysis systems. Programs are written for storage, analysis and display of results in real time

Real-Time Water Quality Management Proceedings of a Task Force

During this past year (from June 1979 to June 1980) several projects were supported at IIASA through the U.S. National Academy of Sciences under a program for International Cooperation in Systems Analysis Research. One of these projects was entitled "Real-time Water Quality Management". It was a collaborative project and formed part of the Research Task "Environmental Quality Control and Management" of IIASA's Resources and Environment Area. The principal objective of the project was to prepare a policy-oriented report that fairly sets out the practical prospects for real-time forecasting and control in water quality management. In these proceedings all the contributions made to the project and the papers presented at a Task Force Meeting at IIASA (March 12-14th, 1980) are collected together. The proceedings therefore represent some of the technical support material for the policy-oriented report, a draft of which is currently under review by the Task Force members. Previous papers on this subject (IIASA Working Papers WP-79-1 and WP-79-125) are reproduced here with minor revisions. An extended summary of the proceedings is given in the "Introduction" prepared by the editor

1981-82 General Catalog

This catalog became effective with summer quarter 1981

The application of automated mine survey systems to mine surveying practice

Mine surveying is at present undergoing a revolution with the possibility of fully automating survey tasks. This has become possible because of the introduction of automated systems of data measurement, acquisition, processing and plotting. The field instrumentation required for automation is explained, together with an analysis of the results from numerous evaluation tests. A guide is given to the computer facilities necessary, both hardware and software, to achieve automation within the mine survey office. Emphasis is given to the experiences and results obtained from the field applications investigated, including underground surveys and surface volumetric surveys. The efforts to automate subsidence monitoring are also covered. The investigations have highlighted the overall increase in efficiency offered by such systems, and the possible future potential offered to the discipline is discussed

General Catalog 1987-88

This catalog became effective with summer quarter 1987

1977-78 General Catalog

This catalog became effective with summer quarter 1977