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Physical Science, Measurement and Instrumentation, Management and Education - Reviews, IEE Proceedings A

Issue 2 • Date February 1988

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Displaying Results 1 - 14 of 14
  • Analysis of a perpendicular-type eddy-current speed meter

    Publication Year: 1988 , Page(s): 89 - 94
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (582 KB)  

    The method of the noncontacting speed measurement of a moving conductive slab is to use the eddy current effect. The slab speed can be measured by the variation of the electromotive force of a detecting coil which is arranged in the neighbourhood of an exciting coil. In the paper, we propose an eddy-current speed meter which consists of one exciting coil and one detecting coil, perpendicular to each other. We carried out a theoretical analysis of this speed meter and confirmed validity of the theoretical formula by experiment. We also obtained some theoretical predictions by the calculation examples. Since this type of speed meter is of a simple structure, and capable of being miniaturised, it is very useful for the continuous manufacturing process, etc. View full abstract»

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  • Co-ordinate determination and performance analysis for robot manipulators and guided vehicles

    Publication Year: 1988 , Page(s): 95 - 98
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (512 KB)  

    The paper describes a technique to determine and to track the three-dimensional `world¿¿ co-ordinates of a point in space, relative to some defined datum. The work was initiated in order to track the location of a robot manipulator end effector, but has relevance to automatic guided vehicles and other applications. A prototype system has been built and evaluated, and has been used successfully to track the tip of a robot manipulator arm moving at velocities of up to 2 m/s within a working envelope consisting of a cube of side 2 m. Measurement resolution of 0.5 mm was obtained, and a sampling rate of 300 Hz was achieved, by the use of real-time software within the measurement system. The coordinates and the velocity outputs are computed in only 1.2 ms. As far as robot manipulators are concerned, the technique provides accurate tracking of end-effector position, which can be used both for evaluating the dynamic performance of existing controllers and for the synthesis of new forms of control View full abstract»

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  • Impulse flashover along the outer surface of a cylindrical dielectric solid with a gas layer inside

    Publication Year: 1988
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (974 KB)  

    Impulse flashover voltage along the outer surface of a layered dielectric composition, composed of two coaxial hard glass cylinders and an inner gas layer, is known to have a V-shaped curve as a function of pressures inside the gas layer. It is the purpose of the paper to clarify the reason for this V-shaped curve. Variation of electric field intensity along the outer surface caused mainly by ionisation in the gas layer, and partly by the residual charges on the inner surface of the outer cylinder is found to play an important role in determining the flashover voltage View full abstract»

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  • Simple real-time signal processing laboratory experiment

    Publication Year: 1988 , Page(s): 107 - 109
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (542 KB)  

    This paper details an approach taken by the authors to provide undergraduate students with experience of some of the problems and techniques encountered in real-time signal processing. The aspects dealt with are development tools for a modern signal processing device the TMS 32010, practical algorithm implementation, and utilisation of processed data View full abstract»

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  • Successful management simulation for young engineers

    Publication Year: 1988 , Page(s): 110 - 112
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (375 KB)  

    The need for engineers to appreciate and practice management techniques at all stages in their careers, is becoming more apparent and more widely accepted, both within the IEE and elsewhere. The paper describes the progress made in organising large management simulations as an integral part of the IEE Younger Members Weekend Conference, an annual event designed and run by younger members of the Institution View full abstract»

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  • Workshop teaching: an experiment in engineering education

    Publication Year: 1988 , Page(s): 113 - 122
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1442 KB)  

    Conventional lectures have been replaced by a scheme of structured peer group discussions in teaching part of an honours degree course in electrical engineering. Some of the benefits of small group tutorials can be achieved without the associated heavy demands on staff time. Active involvement in the learning process encourages the student to take greater responsibility for his own learning and helps to develop communication skills. Student response to the scheme has been evaluated by detailed questionnaires to allow comparison with a conventionally taught course. The experiment has been well received by the students and has had no adverse effects on their examination performances. The method is particularly appropriate for teaching groups that are mixed with regard to prior knowledge of the subject View full abstract»

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  • Entropy: Murphy was right

    Publication Year: 1988 , Page(s): 123 - 124
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (269 KB)  

    Joule's concept of entropy, linked with the concept of the inter-relatoin of energy and the production and refining of material, leads to the recognition that generation of waste can be equated to increase in entropy. Thus, we are operating in a limited entropy field available on earth, and this insight has profound significance for economic and environmental systems. Boltzmann indicated that an increase in entropy is synonymous with moving to a state of higher probability, so the greater the wastedness, the more likely this state. This has been enshrined in the pragmatic Murphy's law: `if anything can go wrong it will¿¿ View full abstract»

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  • Impulse flashover along the outer surface of a cylindrical dielectric solid with a gas layer inside

    Publication Year: 1988 , Page(s): 99 - 106
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (724 KB)  

    Impulse flashover voltage along the outer surface of a layered dielectric composition, composed of two coaxial hard glass cylinders and an inner gas layer, is known to have a V-shaped curve as a function of pressures inside the gas layer. It is the purpose of the paper to clarify the reason for this V-shaped curve. Variation of electric field intensity along the outer surface caused mainly by ionisation in the gas layer, and partly by the residual charges on the inner surface of the outer cylinder is found to play an important role in determining the flashover voltage View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of a perpendicular-type eddy-current speed meter

    Publication Year: 1988 , Page(s): 89 - 94
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (396 KB)  

    The method of the noncontacting speed measurement of a moving conductive slab is to use the eddy current effect. The slab speed can be measured by the variation of the electromotive force of a detecting coil which is arranged in the neighborhood of an exciting coil. The authors propose an eddy-current speed meter which consists of one exciting coil and one detecting coil, perpendicular to each other. They carried out a theoretical analysis of this speed meter and confirmed validity of the theoretical formula by experiment. They also obtained some theoretical predictions by the calculation examples. Since this type of speed meter is of a simple structure, and capable of being miniaturised, it is very useful for the continuous manufacturing process, etc View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Workshop teaching: an experiment in engineering education

    Publication Year: 1988 , Page(s): 113 - 122
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (984 KB)  

    Conventional lectures have been replaced by a scheme of structured peer group discussions in teaching part of an honours degree course in electrical engineering. Some of the benefits of small group tutorials can be achieved without the associated heavy demands on staff time. Active involvement in the learning process encourages the student to take greater responsibility for his own learning and helps to develop communication skills. Student response to the scheme has been evaluated by detailed questionnaires to allow comparison with a conventionally taught course. The experiment has been well received by the students and has had no adverse effects on their examination performances. The method is particularly appropriate for teaching groups that are mixed with regard to prior knowledge of the subject View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Entropy: Murphy was right

    Publication Year: 1988 , Page(s): 123 - 124
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (184 KB)  

    Joule's concept of entropy, linked with the concept of the inter-relation of energy and the production and refining of material, leads to the recognition that generation of waste can be equated to increase in entropy. Thus, we are operating in a limited entropy field available on earth, and this insight has profound significance for economic and environmental systems. Boltzmann indicated that an increase in entropy is synonymous with moving to a state of higher probability, so the greater the wastefulness, the more likely this state. This has been enshrined in the pragmatic Murphy's law: `if anything can go wrong it will' View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Simple real-time signal processing laboratory experiment

    Publication Year: 1988 , Page(s): 107 - 109
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (384 KB)  

    Presents an approach taken by the authors to provide undergraduate students with experience of some of the problems and techniques encountered in real-time signal processing. The aspects dealt with are development tools for a modern signal processing device the TMS 32010, practical algorithm implementation, and utilisation of processed data View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Co-ordinate determination and performance analysis for robot manipulators and guided vehicles

    Publication Year: 1988 , Page(s): 95 - 98
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (352 KB)  

    Describes a technique to determine and to track the three-dimensional `world' co-ordinates of a point in space, in relative to some defined datum. The work was initiated in order to track the location of a robot manipulator end effector, but has relevance to automatic guided vehicles and other applications. A prototype system has been built and evaluated, and has been used successfully to track the tip of a robot manipulator arm moving at velocities of up to 2 m/s within a working envelope consisting of a cube of side 2 m. Measurement resolution of 0.5 mm was obtained, and a sampling rate of 300 Hz was achieved, by the use of real-time software within the measurement system. The coordinates and the velocity outputs are computed in only 1.2 ms. As far as robot manipulators are concerned, the technique provides accurate tracking of end-effector position, which can be used both for evaluating the dynamic performance of existing controllers and for the synthesis of new forms of control View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Successful management simulation for young engineers

    Publication Year: 1988 , Page(s): 110 - 112
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (256 KB)  

    The need for engineers to appreciate and practice management techniques at all stages in their careers, is becoming more apparent and more widely accepted, both within the IEE and elsewhere. The authors describe the progress made in organising large management simulations as an integral part of the IEE Younger Members Weekend Conference, an annual event designed and run by younger members of the Institution View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.