Proceedings of the 1996 IEEE IECON. 22nd International Conference on Industrial Electronics, Control, and Instrumentation

9-9 Aug. 1996

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  • Proceedings of the 1996 IEEE IECON 22nd International Conference on Industrial Electronics, Control, and Instrumentation [front matter]

    Publication Year: 1996, Page(s):i - xxxiv
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    Freely Available from IEEE
  • Design for reactivity: a complementary approach for integrated design

    Publication Year: 1996, Page(s):1473 - 1477 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (483 KB)

    This paper deals with reduction of cost and cycle time when dealing with integrated design (ID). Our goal is to show that the generation of degrees of freedom by ID upstream activities allows ID downstream activities to be achieved more easily. Therefore ID upstream activity reconsideration is less frequent and cost and cycle time can be improved. View full abstract»

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  • On the optimisation of behaviours surveillance structure in multirobots systems

    Publication Year: 1996, Page(s):1554 - 1559 vol.3
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    In autonomous moving robotics, the tendency is to realize multirobot systems with some degree of intelligence; these robots should be able to obtain self-organization for achieving given tasks. Research in this field is often inspired by the ethology which studies the behaviours and interactions in insects societies. To get a correct functioning of such systems, one generally has to control them w... View full abstract»

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  • A model reference identification technique for induction motor drives

    Publication Year: 1996, Page(s):1927 - 1932 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (541 KB)

    Real-time identifiers of the rotor parameters of an induction motor drive are presented in the paper. The synthesis procedure of the identifiers is based on the MRAC system theory. An appropriate choice of the reference model allows a Lyapunov function to be built up by means of which the updating law of one of the above mentioned parameters can be found. A higher order identifier is also synthesi... View full abstract»

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  • Author index

    Publication Year: 1996, Page(s):1996 - 2001
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    Freely Available from IEEE
  • Comparison of fuzzy logic and digital PI control of single phase power factor pre-regulator for an on-line UPS

    Publication Year: 1996, Page(s):1796 - 1801 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    A fuzzy logic control (FLC) and a digital proportional and integral (PI) control are proposed for the application in feedback control of a power factor corrected (PFC) pre-regulator used in a high performance on-line uninterruptible power supply (UPS). Performance of these two controllers are compared through the digital simulation. Since the performance of a fuzzy logic controller depends only on... View full abstract»

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  • An improved snubber circuit with high efficiency and overvoltage clamping in three-level inverters

    Publication Year: 1996, Page(s):1790 - 1795 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    This paper presents a new high efficiency and overvoltage clamping snubber circuit for three-level inverters. The proposed snubber circuit with fewer components reduces a lot of the snubber loss compared with the conventional RCD snubber circuit. And it also has the superior ability for clamping the overvoltage at turn-off of switching devices. In addition, the blocking voltage unbalancing problem... View full abstract»

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  • Parallel connections of pulsewidth modulated NPC converters using current sharing reactors

    Publication Year: 1996, Page(s):1776 - 1783 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    A technique of parallel connection of power devices by using current sharing reactors for NPC-PWM inverters is reported in this paper, in which a certain modulation technique is discussed. This proposed modulation technique can not only increase current capacity and the output voltage level but also decrease the output harmonic contents. The output voltage waveforms of the proposed inverter have c... View full abstract»

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  • Base/gate drive suppression methods for NPC inverter legs

    Publication Year: 1996, Page(s):1784 - 1789 vol.3
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    The base/gate drive suppression methods for the voltage source inverter leg are those which suppress base/gate drives of either of the two switching devices of the leg. These methods have the merits that they do not have the conventional dead time problem, raise the reliability of the leg, and others. In this paper, the concept of these methods is extended to the NPC inverter leg, so that two type... View full abstract»

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  • DSP-based controller application in battery storage of photovoltaic system

    Publication Year: 1996, Page(s):1705 - 1710 vol.3
    Cited by:  Papers (16)  |  Patents (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    Photovoltaic power systems normally use maximum power point tracking (MPPT) to continuously deliver the highest possible power to the load when changes in insolation and temperature occur. This overcomes the problem of mismatch between the solar cells and the given load. The solar array is normally treated as a voltage source, but it is treated as a current source in this paper. A simple method of... View full abstract»

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  • Nonlinear control using homotopy methods

    Publication Year: 1996, Page(s):1922 - 1926 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    Homotopy and continuation methods are commonly used tools in numerical analysis to solve nonlinear algebraic equations and optimisation problems. In this paper they are used to generalise the feedback controller design based on the well-known linearisation around an operating point. The result is a nonlinear feedback control law with guaranteed closed loop stability properties. The advantages are ... View full abstract»

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  • Expert failure detection technique for distillation column

    Publication Year: 1996, Page(s):1323 - 1328 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    In this paper we describe an expert system for diagnosis of faults in a distillation column which are in the incipient stage but that might lead to a serious situations in the near future. Since the distillation column is a large-scale system, it is therefore natural to assume that there will be a huge number of faults due to multiple causes. Hence, in such complicated systems, it becomes very dif... View full abstract»

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  • A distributed control architecture for an experimental mobile robot

    Publication Year: 1996, Page(s):1548 - 1553 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The authors present an ICAR (intelligent cooperative autonomous robot) mobile robot using a distributed architecture. This mobile robot must be able to perform tasks ordered by a supervisor or another robot. A team can be built in which several ICAR agents can work in cooperation on distributed or sequential tasks. To accomplish a mission in multi-robot environments, cooperative behaviour with spe... View full abstract»

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  • Analysis of switching power converter by using a switching matrix approach

    Publication Year: 1996, Page(s):1770 - 1775 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    Power electronics is a branch of electrical and electronic engineering concerned with the analysis, design, manufacture and application of switching power converters. Power converters are devices interposed between sources of electrical energy and loads which usually convert that energy to some other form, where efficiency has always been a cardinal consideration in their design and application. T... View full abstract»

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  • An approach to variable structure control of a flexible-link manipulator

    Publication Year: 1996, Page(s):1949 - 1953 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    A variable structure controller was designed for the trajectory tracking of a flexible-link manipulator. The tip position, which is the controlled variable, was decomposed into rigid and flexible parts, thus resulting in two switching surfaces. The VSS technique ensured the system was always stable in the Lyapunov sense. The controller was successfully implemented on an experimental single-link ma... View full abstract»

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  • Estimation of second-order harmonic and intermodulation distortions using higher order spectra

    Publication Year: 1996, Page(s):1347 - 1352 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    A new higher-order spectral method for estimating second-order harmonic and intermodulation distortions of a nonlinear system, which can be described by a second-order Volterra series, is presented in this paper. The conventional higher-order spectral method, due to its embedded error, exhibits poor performance when the available data for estimating the second-order distortions are limited. By rem... View full abstract»

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  • Observer based local torque optimization in redundant manipulator

    Publication Year: 1996, Page(s):1915 - 1921 vol.3
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    In this paper, an observer based local torque optimization strategy for a redundant manipulator is proposed. The calculation of a local torque optimizing controller becomes more complicated as the number of the degree-of-freedom increases because the pseudo inverse Jacobian matrix is generally used and the controller needs to calculate the null space term and dynamical torque term. To improve this... View full abstract»

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  • Comparing controllers for a flexible link

    Publication Year: 1996, Page(s):1978 - 1983 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    Many electromechanical systems with resonant modes are difficult to control with just output feedback. A conventional solution is to use proportional control with velocity feedback. In theory, full state feedback should yield better control. However full state feedback may not be economically justifiable or even technically feasible. This paper compares solutions using proportional plus velocity f... View full abstract»

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  • A fast adaptive Volterra filter

    Publication Year: 1996, Page(s):1624 - 1628 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    In this paper, we introduce a general parameterization method of the adaptive Volterra filter, and investigate the convergence of the adaptive parameters. The key of the present method is that the Volterra kernels, which are multi-dimensional functions, are expanded by an arbitrary one-dimensional orthonormal function set. Based on this investigation, we propose an efficient adaptive Volterra filt... View full abstract»

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  • Power factor correction of a single-phase on-line UPS with the half-bridge inverter

    Publication Year: 1996, Page(s):1826 - 1831 vol.3
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    The power factor correction (PFC) scheme of the conventional on-line UPS with the half-bridge inverter is proposed and described. A correction method for the positive voltage boost stage is like the well-established boost corrector, but the PFC circuit of the negative voltage boost stage is different. The power factor of unbalanced loads can be still close to unity by the proposed scheme. Design c... View full abstract»

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  • Design considerations for the improved Class-D inverter topology

    Publication Year: 1996, Page(s):1542 - 1547 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    The characteristics of the improved Class-D inverter and its optimal design considerations are described. Analytical considerations and equations are presented to provide easy-to-use design tools. A theoretical description for the design of the turn-off snubber capacitor, the overvoltage clamping snubber capacitor, and the damping resistors is explained. The validity of the theoretical description... View full abstract»

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  • Investigation of dynamic controllers for a unified power flow controller

    Publication Year: 1996, Page(s):1764 - 1769 vol.3
    Cited by:  Papers (7)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    In this paper, a unified power flow controller (UPFC) model based on a d-q rotating frame is introduced The performance of the UPFC system with three different controllers, PI controller, PI controller with decoupling and cross-coupling controller, are investigated through simulation and implementation in an experimental laboratory model. It is found that the cross-coupling controller produces the... View full abstract»

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  • Variable structure active suspension system

    Publication Year: 1996, Page(s):1945 - 1948 vol.3
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    The active suspension of vehicles for greater ride comfort on rough roads is investigated in the literature using optimal control and MRAC schemes. A new approach, based on variable structure control, for the design of a model following active suspension system is presented in this paper. The controller design is nonadaptive and therefore does not require the update of control parameters. It ensur... View full abstract»

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  • On the detection of isolated signals by the partial spectrum of Daubechies wavelet

    Publication Year: 1996, Page(s):1341 - 1346 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    This paper deals with a detection method of isolated useful signal in the ground noise. We propose a subset of the spectrum of Haar's and Daubechies wavelet. The ratio of the power spectrum sum on the proposed subset and total power spectrum sum is used for the detection process. Also, we use an OU (Ornstein-Uhlenbeck) process for the ground noise model and 1 period sinusoid function for the appro... View full abstract»

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  • A study on traffic sign recognition in scene image using genetic algorithms and neural networks

    Publication Year: 1996, Page(s):1838 - 1843 vol.3
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    This research is concerned with a new technology for the recognition of traffic signs from a scene image using genetic algorithms (GA) and neural networks (NN). First, an original video image is obtained as a binary image by using the smoothing filter and the Laplacian filter. Second, the traffic sign in a scene image is searched using a proposed GA. Third, if there exist two traffic signs in a vi... View full abstract»

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