Function-oriented chips are playing increasing roles to make vision systems faster without increasing their system costs. the vision chips are categorized into digital, analog, and hybrid chips. this paper overviews t...
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Function-oriented chips are playing increasing roles to make vision systems faster without increasing their system costs. the vision chips are categorized into digital, analog, and hybrid chips. this paper overviews trends in function-oriented vision chips for real-time visual processing. Several examples are also included.< >
Modern factory controlsystems are no longer a collection of machines and controllers connected by point-to-point wiring; instead, factory automation has become yet another example of a real-time distributed system. C...
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Modern factory controlsystems are no longer a collection of machines and controllers connected by point-to-point wiring; instead, factory automation has become yet another example of a real-time distributed system. control and monitoring systems are implemented routinely by using local area network technology. In this context, it is the choice of communications protocol which determines the power and utility of the resulting system. Not only must the control program deal with traditional communications services such as control messages and file transfers, but it must also support new functionalities such as electronic mail, real-time transactions, image transmission, multimedia, and teleconferencing. We discuss the design features, functionality, and performance of the Xpress Transfer Protocol, a new communications protocol specifically intended to support real-time distributed systems.< >
Neural networks to recognize industrial characters are required to achieve high reading reliability. To achieve this high reliability, a method to controlthe structure of a neural network's hidden layer has been ...
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Neural networks to recognize industrial characters are required to achieve high reading reliability. To achieve this high reliability, a method to controlthe structure of a neural network's hidden layer has been introduced. the method defines the feature extraction functions of neurons in the hidden layer, and preliminary teaching is so constructed that it gives the hidden layer neurons defined properties. After the desired property attached to the hidden layer neurons, the ordinary backpropagation procedure refines the structure of the neural network.< >
this paper describes a three dimensional vision system for intelligent vehicles. After reviewing related works, the paper focuses on a stereo vision system which measures the distance to the vehicle in front using tri...
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this paper describes a three dimensional vision system for intelligent vehicles. After reviewing related works, the paper focuses on a stereo vision system which measures the distance to the vehicle in front using trinocular triangulation. Custom processor architectures were developed for low mass-production cost, real-time operation, low power consumption, and small physical size. the system was installed in a trunk of a car and evaluated successfully on highways.< >
this paper considers sliding mode controlled nonlinear DC drive and the derivation of the required conditions on the control parameters for the system to exhibit sliding mode behaviour. the modelling of the nonlinear ...
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this paper considers sliding mode controlled nonlinear DC drive and the derivation of the required conditions on the control parameters for the system to exhibit sliding mode behaviour. the modelling of the nonlinear DC drive is done in state-space and simulation on a Digital computer 80486 Unix based system with Adams Bashforth's predictor-corrector method for the solution of inherent nonlinearity present. the proposed control is insensitive to the variations in the control gains and it does not change significantly withthe variation in the load conditions.< >
In this paper, implementation and operation of a simplified Hopfield type neural network system based on pulse-train arithmetic are presented. the narrow module proposed here as a basic building block is composed of a...
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In this paper, implementation and operation of a simplified Hopfield type neural network system based on pulse-train arithmetic are presented. the narrow module proposed here as a basic building block is composed of a pair of neuron unit and synapse unit, which performs time-division multiple operation. the Hopfield type neural network is implemented by connecting the neuron modules in parallel with a single bus line, so that this structure can considerably reduce a mass of hardware. In particular, the network can easily be extended to more practical systems from the simple structure.< >
this paper describes an approximated zeroing with an equivalent disturbance observer and predictive controller for drive systems. then this linear controller structure is changed by fuzzy logic such that the controlle...
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this paper describes an approximated zeroing with an equivalent disturbance observer and predictive controller for drive systems. then this linear controller structure is changed by fuzzy logic such that the controller makes the system respond quickly if the error e is large and vice versa in order to obtain a robust controller which is insensitive to boththe plant noise and the observation noise. Next, a variable structure PI controller by fuzzy logic for drive systems is introduced. then, this control scheme is implemented with neural networks. these controllers are realized with digital signal processors. the experimental results are given. Lastly, the applications of neuro fuzzy methods to invertors, convertors, motion controls and sensors are explained.< >
this paper describes the realisation of a complete rotor flux oriented current and speed control system for a PWM-VSI fed asynchronous motor drive. the performance of the control system obtained on an experimental 11 ...
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this paper describes the realisation of a complete rotor flux oriented current and speed control system for a PWM-VSI fed asynchronous motor drive. the performance of the control system obtained on an experimental 11 kW test drive is presented. Rotor flux estimation and the control algorithms are implemented as tasks in a microcontroller. this constitutes a compact and flexible solution to the overall motor control problem. the dynamic responses for the drive are shown to be fast both for the current control loop as well as for the outer speed control loop.< >
this paper proposes a gain scheduling robust controller whose structure is continuously changed by fuzzy logic such that the controller makes the system respond quickly if the error e is large and vice versa in order ...
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this paper proposes a gain scheduling robust controller whose structure is continuously changed by fuzzy logic such that the controller makes the system respond quickly if the error e is large and vice versa in order to obtain a robust controller which is insensitive to boththe plant noise and the observation noise. then, it is applied to speed control for an induction servomotor. Experiments show that the proposed controller is superior to both a sliding mode controller and a PID controller. the paper includes the stability analysis of the overall system and the design procedure using Liapunov's method.< >
the synergic interaction between mechanical and electrical engineering and computerscience, characterised by the synonym mechatronics, is a relatively new approach in modern engineering. Mechatronics is most obvious ...
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the synergic interaction between mechanical and electrical engineering and computerscience, characterised by the synonym mechatronics, is a relatively new approach in modern engineering. Mechatronics is most obvious in the field of robotics. the demands for mechatronic systems are considerable in many key industrial areas. therefore, this paper presents a brief survey of mechatronic approaches in research and development of high technology processes, and their application in various fields of industry. the approaches presented have been developed in context of the introduction of advanced robotics and information technology into modern production automation.< >
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