By Topic

Industrial Electronics, Control, and Instrumentation, 1995., Proceedings of the 1995 IEEE IECON 21st International Conference on

6-10 Nov. 1995

Go

Filter Results

Displaying Results 1 - 25 of 162
  • Centralized versus distributed protocols for FieldBus applications

    Publication Year: 1995, Page(s):1580 - 1585 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (734 KB)

    FieldBus communication systems provide a more efficient interconnection of field devices in factory automation environments than was possible with traditional point-to-point systems. A critical point in FieldBus communication systems, however, is represented by access to the distributed physical medium, and the use of one data link layer (DLL) access protocol rather than another may be decisive in... View full abstract»

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

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (274 KB)
    Freely Available from IEEE
  • Digital filtering in smart load cells

    Publication Year: 1995, Page(s):990 - 994 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    This paper describes an application of a self-adaptive pseudo-moving average filter used in the implementation of a smart load cell, to combine a stable digital output with a fast response to weight changes. The smart load cell is a data acquisition solution using a single chip RISC microcontroller with very few other active and passive components around and taking advantage of the ratiometric fun... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pulse frequency calculation and estimation in yarn evenness analysis

    Publication Year: 1995, Page(s):985 - 989 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The present paper describes work carried out, within a project to the textile industry, to achieve supervision and characterization of spun yarn. One of the main goals was to establish a methodology to easily determinate the roller draft that causes irregularities. Two different approaches to achieve decomposition of a binary signal in digital signals with known pulse frequencies are presented. Th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptation and learning factor for neural controllers

    Publication Year: 1995, Page(s):1406 - 1410 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The definition of a passive state for a system composed of a plant and a neural network controller (NNC), using a multi-layer artificial neural network, is presented. The term transition time is defined using the concept of the passive state. The experimental results obtained for the on-line determination of the adaptation and learning factors for a direct and indirect neural controller are presen... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Generalised predictive control of input-constrained nonlinear processes based on numerical methods

    Publication Year: 1995, Page(s):945 - 949 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    A generalised predictive control algorithm based on numerical methods has been developed to cope with some of the practical control problems such as input constraints, rate limits and nonlinearities of industrial processes. Using numerical methods, different cost functions can be minimised to achieve the desired control performance without any significant change to the control algorithm. The resul... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Automatic generation of optimized DSP assembly code

    Publication Year: 1995, Page(s):979 - 984 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    This paper describes a data flow graph compiler for the analog devices fixed-point DSP family ADSP-210x. In the first step, the graphs are transformed into constrained expression trees. Next, optimized straight-line code is generated based on the trellis tree concept. Scheduling, register allocation, and instruction selection amount to looking for minimal weighted paths in trellis trees. In the fi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Relationship between time-varying higher order statistics and a time-varying moving average model

    Publication Year: 1995, Page(s):1102 - 1105 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    The parameters of a time-varying moving average (MA) model of a nonstationary signal are shown to be related to the cumulants of the signal generated from a nonGaussian independent and incrementally distributed input. Therefore, it is shown that the cumulants can be computed from the parameters of a time-varying MA model, and vice verse View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A test methodology for artificial neural networks

    Publication Year: 1995, Page(s):1400 - 1405 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    This paper continues developments of a new and novel testing approach for detecting interconnection deletion faults in electronic implementations of artificial neural networks (ANNs). The testing approach is based on an unusual ANN behavior manifested by faulted ANNs having apparent better performance than fault-free ANNs, when neurons are operated with low activation function gains. Although tran... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Intelligent actuation and measurement system-based modelling: a case study

    Publication Year: 1995, Page(s):1608 - 1613 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (672 KB)

    This work is aimed at experimentation of the Intelligent Actuation and Measurement (IAM) Model developed by the PRIAM (prenormative requirements for IAM) project for the specification of a manufacturing plant. In order to do this a manufacturing enterprise made available a whole production system composed of multiple working stations interconnected by means of a proprietary field network. The plan... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Scale and rotation invariant texture analysis based on structural property

    Publication Year: 1995, Page(s):1290 - 1294 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Structural properties of texture elements in a surface have successfully been applied to characterize textures. For this purpose, histograms of a texture element's properties are used. The compactness property of an element has been used for characterization. The compactness depends upon it's perimeter. A novel method based on perimeter contribution, to compute the value of the perimeter is presen... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of variable structure control system by using the vector Lyapunov function method

    Publication Year: 1995, Page(s):748 - 753 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The objective of this paper is to present a simple design method of a variable structure controller for systems with nonlinear uncertainty. The proposed method is based on a kind of a boundary layer method and can eliminate chattering. The control law is given by sum of a linear feedback and a saturation type nonlinear state feedback, that is, a linear feedback in the boundary layer and sum of an ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of fieldbus networks by bandwidth allocation scheme

    Publication Year: 1995, Page(s):1566 - 1572 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    Fieldbus is the lowest level communication network in the factory automation and process control systems. Performance of factory automation and process control systems is directly affected by the data delay induced by network traffic. Data generated from several distributed field devices can be largely divided into three categories of time-critical, periodic and time-available data. Since these da... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Controller reduction preserving the closed-loop performance for a class of linear multivariable systems

    Publication Year: 1995, Page(s):937 - 944 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    In this paper, a new method of controller reduction preserving both stability and performance of the closed-loop system is proposed. First, a quadratic cost is introduced which represents a performance of the closed-loop system constructed by linear multivariable plant and high-order dynamic controller. Then the controller reduction problem is formulated as finding the fixed low-order dynamic cont... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Experimental evaluation of adaptive and robust schemes for robot manipulator control

    Publication Year: 1995, Page(s):1248 - 1253 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    Adaptive and robust control schemes are compared in tracking control of a robot manipulator. In adaptive control, we classify the adaptive control laws into three types and then investigate their tracking performances by experiment. In robust control, a two degree of freedom controller is examined. We demonstrate its strong disturbance rejection performance and robustness to parameter variation. F... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Abstract network optimization with application to vehicular routing

    Publication Year: 1995, Page(s):768 - 773 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    In this paper, the authors present a method for determining the optimum path within a network of two-way streets or roads. This approach builds on the principle of dynamic programming, but is distinct from it in that it is iterative and more straightforward in its formulation. In the process of determining the optimal solution, at the first iteration any node whose previous remaining cost is unkno... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Observers for sensorless control of industrial magnetic bearings

    Publication Year: 1995, Page(s):973 - 978 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    A nonlinear state estimator for industrial magnetic bearings is presented. The estimator uses voltage measurements, current measurements, and a magnetic flux model to estimate the bearing air gap dimension. The accuracy of the proposed state estimator is model dependent, but appears to be much less sensitive than linear observers that have been used in this application. Also presented in the paper... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A 1-D pattern recognition system based on fuzzy logic

    Publication Year: 1995, Page(s):1058 - 1061 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    In this report, the authors describe a method for orientation and quality control through a pattern analysis of electric lights sensors. This method makes use of fuzzy logic for the pattern recognition and system control. Application to the orientation and quality control of odonthologic drills required controlled actions of sample accepting, reversing or rejecting. The system is being developed f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptive predictive control for electric furnace

    Publication Year: 1995, Page(s):878 - 883 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    This paper shows adaptive control using RHPC (receding horizon predictive control) with an equality constraint which is applied to an electric furnace. Monotonic weighting and prefiltering are introduced, which improve the closed-loop characteristic of the RHPC system. These methods are effective even if the system has the uncertainty (unmodelled dynamics) which often occurs in real processes. We ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Intelligent pulse-pump controller for X-Y mode frequency-locked stepping position control system

    Publication Year: 1995, Page(s):1096 - 1101 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    A microprocessor-based intelligent pulse-pump controller (μP-IPPC) for X-Y mode frequency-locked stepping position servomotor control system (XY-FLSPS) is proposed. A discrete frequency is programmed to represent the servomotor position so as to raise the accuracy of position lock. Two proper X and Y motion profiles generated from μP-IPPC are provided for guiding the X and Y motor movements ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Finite-element analysis for photoelastic tactile sensors

    Publication Year: 1995, Page(s):1202 - 1207 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    In this paper, a photoelastic tactile transducer is modelled and analyzed using finite-element analysis (FEA). The effects of both normal and tangential forces are considered. Two different boundary conditions are examined for a transducer whose compliant protective layer has different mechanical properties from the photoelastic layer View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • DSP-based fuzzy logic controller for VSI-fed vector controlled AC motors

    Publication Year: 1995, Page(s):1478 - 1483 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    The paper deals with the fuzzy logic control(ler) (FLC) application to the vector controlled AC motor drive. The aspects of major importance in the application to vector controlled AC motor drives are pointed out and discussed. The rule base can be easily built using the general dynamics of the process, and than readily updated to contain the delayed information for reducing the dead-time effects ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Impedance control strategy for robotic assembly tasks

    Publication Year: 1995, Page(s):1372 - 1377 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    An impedance control scheme is developed for robot manipulators performing assembly tasks which require interactions with the environment. The specification of the target impedance is given in terms of a desired motion trajectory, a desired interaction force trajectory, and a second-order impedance function relating the motion errors and the interaction force errors. The proposed scheme is applied... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Quality monitoring technology for laser welding

    Publication Year: 1995, Page(s):1164 - 1168 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    The possibilities of laser welding quality monitoring by evaluating the plasma which appears on the surface of the metal is considered in this paper. As one of the results, it is found that the size of the laser induced plasma changes at a period of ms order. It also becomes clear that there is a linear correlation between both of the signal levels of the charge voltage caused by the laser induced... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The fuzzy-nets based approach in optimization of machining processes

    Publication Year: 1995, Page(s):1395 - 1399 vol.2
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    In this research, a self-organizing fuzzy-nets optimization (FNO) system is developed to generate a knowledge bank that can show the required cutting power to be on-line for a short length of time in an NC verifier. The FNO system requires a self-learning procedure consisting of five steps. A generic system consisting of a fuzzification module and a defuzzification module is implemented to perform... View full abstract»

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