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[1992] Proceedings of the IEEE International Symposium on Industrial Electronics

25-29 May 1992

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Displaying Results 1 - 25 of 209
  • An adaptive learning control scheme for manipulators

    Publication Year: 1992, Page(s):375 - 379 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (266 KB)

    The author presents a simple adaptive learning control scheme for multi-joint robotic manipulators based on the independent joint adaptive control and iterative learning control concepts. The control scheme consists of an adaptive law and a learning law. The adaptive law is designed by the Lyapunov method; less knowledge about the manipulator dynamics is required, and only the position and velocit... View full abstract»

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  • Proceedings of the IEEE International Symposium on Industrial Electronics (Cat. No.92TH0371-5)

    Publication Year: 1992
    Request permission for commercial reuse | PDF file iconPDF (52 KB)
    Freely Available from IEEE
  • Discussion on adaptive array signal processing

    Publication Year: 1992, Page(s):450 - 453 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (227 KB)

    In this paper, the authors study four kinds of adaptive arrays. The authors give four optimal weight vectors and one consistent signal to interference noise ratio (SINR) formula. On this basis, they discuss how to further improve the SINR by adaptive array optimal design. Finally, one example is presented to verify their conclusions.<> View full abstract»

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  • Fast computation algorithm for robot dynamics and its implementation

    Publication Year: 1992, Page(s):352 - 356 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The authors propose an architecture of parallel processing to increase the computational speed of the matrix/vector operation for robot dynamics. The system is formed by nine processor elements with X-bus and Y-bus. This array processor is able to achieve zero data transfer time by using data sharing on the bus. The multiplication of 3×3 rotation matrices requires only three multiplications ... View full abstract»

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  • Position control of robot arms using intelligent variable structure system

    Publication Year: 1992, Page(s):357 - 361 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    The basic equations of a variable structure controller are given. From them it is found that the output of the controller is related to the extent of the system parameters. An intelligent variable structure controller is designed, and several groups of characteristic parameters are determined by means of CAD technology of the control system and stored in a computer. A knowledge-based system (KBS) ... View full abstract»

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  • CAD-based robot vision: from CAD models to vision models

    Publication Year: 1992, Page(s):362 - 365 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    The authors focus on an open problem in the area of 3D object recognition-vision model building for 3D objects. The integration of a CAD system and robot vision system and led to a third type of vision model building for robot vision system: adaptation of pre-existing CAD models of objects for recognition. The authors developed a CAD system that contains polyhedral approximation solid modeling and... View full abstract»

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  • Robot motion planning for time-varying obstacle avoidance using view-time concept

    Publication Year: 1992, Page(s):366 - 370 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    An approach to solving the time-varying obstacle avoidance problem is pursued. The mathematical formulation of the problem is given in robot joint space (JS). The view-time concept is introduced to deal with time-varying obstacles. The view-time is the period in which a time-varying obstacle is viewed and approximated by an equivalent stationary obstacle. The equivalent stationary obstacle is the ... View full abstract»

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  • A heuristic prediction method for constrained optimal control problems

    Publication Year: 1992, Page(s):830 - 831 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    In this paper, the heuristic prediction method (HPM) is extended to the long time horizon constrained optimal control problems. The key features of this method are that a heuristic term is added to each of the subproblems, and that a prediction method is adopted in the high level problem. Numerical results show its feasibility and its potential applications to real-time control problems View full abstract»

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  • Fast and auto-adaptative morphological segmentation for implementation in a 3-D vision sensor

    Publication Year: 1992, Page(s):371 - 374 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    An intelligent 3-D vision sensor is under development in the authors' laboratory for applications in robot guidance and autonomous vehicle control. The aim in this context is to compute a depth map from two images (512×512×8 bits) in less than 0.1 seconds. The state of the field indicates the necessity for the development of new, fast, auto-adaptive operators to segment images meeting ... View full abstract»

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  • Design and implementation of an automated thirty-two channel tester (A32CT)

    Publication Year: 1992, Page(s):584 - 587 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    The automated thirty-two channel tester (A32CT) is an electrical tester designed to switch a gamut of voltages to any of thirty-two different output lines. The voltages range from 0 to 200 VAC peak, and from 0 to 200 VDC. The output voltages on the thirty-two lines are controlled by software on an IBM personal computer and can be changed for specific timing and signal sequences. The M24CT is a sub... View full abstract»

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  • Adaptive frequency measurement (AFM) for vortex flowmeter signal

    Publication Year: 1992, Page(s):832 - 835 vol.2
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    This paper proposes a new adaptive frequency measurement method (AFM) for vortex flowmeter signals. Based on AFM, one can construct a new adaptive vortex flowmeter. Theoretical analysis and experimental results have proven that this method is practical for improving the measurement accuracy of the vortex flowmeter in practice use, and that this method can also be used in the other measurement and ... View full abstract»

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  • Coordinate-parametric control of time optimal manipulation robots

    Publication Year: 1992, Page(s):316 - 319 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The problem of synthesizing time-optimal automatic control system (ACS) dealing with the executing mechanism of a robot body in the form of the second order linear object is considered taking into account the measurement inaccuracy of real position transducer. The purpose of synthesis is to make the level of the ACS positioning error, caused by this inaccuracy, less and introduce some additional p... View full abstract»

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  • A new scheme of fault detection based on neural nets

    Publication Year: 1992, Page(s):580 - 583 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    This paper presents a new scheme for fault detection based on neural nets. By using a Hopfield neural network for online parameter estimation, process faults caused by parameter changes can be detected. Because of the use of a neural computing technique, the scheme improves the performance of fault diagnosis approaches based on traditional parameter estimation methods with respect to detection spe... View full abstract»

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  • Relations between sensitivity of moment and root in cascade form FIR filters

    Publication Year: 1992, Page(s):836 - 837 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB)

    In practical realizations, because the coefficients and state variables of filters are represented as a fixed word length, discrepancy between the idealized and actual performances of digital filters resulting from coefficient quantization will occur. A concept of moment of impulse response has been proposed as a measure to describe such signals in the time domain. In this paper, the authors discu... View full abstract»

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  • Design of a Cockcroft-Walton cascade rectifier for triggering flashlamps

    Publication Year: 1992, Page(s):715 - 719 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    This paper describes two possible implementations for a Cockcroft-Walton cascade rectifier connected in series with a sustaining current supply. The rectifier is used to initiate the electrical breakdown process in a flashlamp whereas the sustaining supply maintains the current during the post breakdown period. The analysis for a distributed parameter and lumped parameter implementation is present... View full abstract»

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  • Fast 2D convolution filter based on look up table FFT

    Publication Year: 1992, Page(s):446 - 449 vol.1
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    This paper shows a fast implementation method of a two dimensional (2D) filter. The filter design is based on fast convolution related to the fast Fourier transform (FFT) look up table. This is then extended to the 2D FFT. The design and implementation of the system gives a good accurate selection of the desired frequency. The system has a step advantage of a reduction in the operation time View full abstract»

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  • Recent development in large-scale systems research in China

    Publication Year: 1992, Page(s):22 - 28 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    A general view of large-scale systems research in China is given, which includes model reduction, stability, hierarchical and decentralized control, steady-state optimizing control, large-scale decision making and application research achievements of both industrial processes and societal and economic systems, and so on. Finally, a perspective for future research is viewed based on the present sit... View full abstract»

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  • Development of information integration in navigation

    Publication Year: 1992, Page(s):57 - 60 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    This paper presents a new information integration principle (IIP) in state filtering and estimation of a large scale linear system. When applied to decentralized navigation systems in which one or more sensor dedicated local filters feed a larger master filter, it showed that the IIP is efficient and convenient, and can given optimal or suboptimal solutions based on the throughput, precision and r... View full abstract»

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  • Congested communication network and an electronic simulation method for the location problem

    Publication Year: 1992, Page(s):796 - 798 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    The authors consider a congested communication network in which the cost for travelling an arc is dependent on the number of user on it. Assume each user of the network is aware of the cost along each arc available to him, and he thereby takes his cheapest route between his origin and destination. As shown in Beckman and Winsten (1956), the user optimal flow is given by the optimal solution to the... View full abstract»

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  • A robust model-based controller for robot manipulators

    Publication Year: 1992, Page(s):380 - 384 vol.1
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    An additional model-based parallel-compensator is attached to the conventional model-based computed torque controller, which is in the form of a serial compensator, to enhance the robustness of robot manipulator control. The novel scheme is simple and numerical studies verify that it is much more robust than existing methods View full abstract»

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  • An investigation of the effect of distributed structure flexibility on behavior of single-link manipulator force-feedback control system

    Publication Year: 1992, Page(s):320 - 323 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    In previous research, the authors obtained some high accuracy dynamic models for flexible manipulators. On the basis of the above dynamic models, some further research was made, which is going to be reported in this paper, to investigate the effect of distributed structure flexibility on behavior of a single-link manipulator force-feedback control system View full abstract»

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  • Microprocessor-based real-time fault detection system raise speed

    Publication Year: 1992, Page(s):575 - 579 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    The work is devoted to a new, more universal comfortable and portable protection and control system, that is used as the fault detection system of a concentrated power installation with any number of connections on the basis of microprocessor technology. The principle of this system operation is stated and illustrated. The algorithm of its implementation is shown in this paper View full abstract»

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  • Neural networks adaptive control

    Publication Year: 1992, Page(s):117 - 120 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    Neural networks have the function of self-learning and are adaptive. Control systems using neural networks provide improved performances than those using conventional methods. Based on the analysis and study of backpropagation neural networks, the authors propose a new method of adaptive control-neural networks adaptive control, and give some simulation results View full abstract»

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  • Sub-band image coding with incorporating HVS model

    Publication Year: 1992, Page(s):838 - 839 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    This paper presents a subband image coding method with an incorporating HVS model. In this method, an image to be coded is first divided into several frequency bands by a 2D subband analysis system, and then different bands are transformed into the spectral domain through the DCT. HVS models are used to weight the transformed coefficients in accordance with the human eye's sensitivity to AC energy... View full abstract»

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  • Field oriented control of an asynchronous motor with a very wide region of flux weakening

    Publication Year: 1992, Page(s):606 - 610 vol.2
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    In the first part of the paper, the torque capability of an inverter-fed saturated induction motor is determined. The maximum torque being available for short-time duty and the corresponding flux are calculated considering the limitations of the current and the voltage only. The flux weakening region consists of two parts which require different control strategies. At partial load the efficiency c... View full abstract»

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