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We have developed the 3D shape evaluation support system that integrates the visual and gazing line-motion information in virtual space and tactile information in real space, for the analysis of 3D shape evaluation in virtual space by synthesis. In this paper, the influence of visual information with user’s own avatar is investigated. Three kinds of visual information are prepared; one is with only objects, second is with objects and avatar’s forearms and static hands, third is almost the same as the latter but with dynamic hands by using the data groves. The sensory evaluation by paired comparison of 3D shapes and the questionnaire are carried out in each virtual space and in real space. The result shows that the avatar’s forearms and static hands do not affect the shape evaluation in virtual space, however the dynamic hands discourage the user from the shape evaluation.

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Without considering various uncertainties involved in system model, it happens likely that the optimum solution is useful only in specific situation or insignificant at worst. Concerning with parameter uncertainties, in this study, we propose a new genetic optimization method to obtain an insensitive solution. We first formulate the problem as a statistical optimization problem that will maximize the expectation of the objective function. Then we propose a new genetic algorithm where fitness is calculated by both expectation and variance of the objective function. Through numerical experiment, we have shown the effectiveness of the proposed method compared with the conventional methods. Moreover, we have shown application of the PVM (Parallel Virtual Machine) can improve its solution efficiency.

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[in Japanese]

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Recently, much research regarding time-frequency analysis using wavelet transformation, WT, has been focused on analyzing wavelets, AW's, that are derived from a mathematical approach. In this study, the measured signal is adopted as the AW. To apply this method to time-varying signals, a new concept of instantaneous correlation factor, ICF, is introduced. ICF uses WT by employing the measured signal as the AW. In this study, it is proved that a dominant feature of the correlation can be estimated by the ICF. It is made clear that our method is effective in brain waves analysis and ship interior noise analysis.

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[in Japanese]

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This paper describes about the automatic physical-distribution system in a warehouse, using the contact-less RFIDs(radio frequency identifications) for the data carrier. The components of this system are materials -handling equipment, reader/writers of RFID with antennas and personal computers and. This system supports the distribution-work of packing boxes with various kinds of goods and printing the slips for package boxes. And this system dramatically reduces workload. This system enables to print the slip immediately after the package box is loaded, which will actualize non-stagnant shipping and reduce storage-space for loaded boxes.

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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[in Japanese]

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On the image processing field, optical flow method is used for detection of motion. In this research, we proposed the flow calculate method which using the color information. Optical flow is usually obtained from a monochrome movie. The color movie has more information about the object. To obtain the more accurate flow vector, the method use the color information.

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[in Japanese]

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This paper shows how to design a reference governor for systems with state and/or constraints. In order to reduce the data size to be implemented, the period of managing a constant reference is set longer than a sampling time of the original constrained system. In constructing our reference governor, therefore, we consider a constrained system which is reformulated from original one using a technique of blocking. Moreover, we perform simulations and experiments to validate the effectiveness of our proposed reference governor.

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Reference governor is one approach to design control systems for the constrained plant. In this paper, we introduce the reference governor based on linear programming. We show that this approach can be reformulated as multiparametric linear programming. By solving multiparametric linear programming, the modified reference signals can be expressed as a piecewise affine function of the state and the reference signal.

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In this paper, we consider stabilizing discrete-time LTI systems via static output feedback involving quantized measured output signals. The systems in consideration are stabilizable by static output feedback, but the systems' stabilities can not be guaranteed due to quantization effect. For this reason, we propose a hybrid quantized output feedback strategy asymptotically stabilizing the system, where the values of the quantizer parameter are updated at discrete instants of time.

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The control technology has played an important role in making the effective operation in the steel industry. Precise mathematical models and advanced control systems have been developed in order to improve quality of products, yield ratio, productivity and fuel consumption.

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In Japan, chemical industry has been rapidly developed after world-war II, currently accounting for about 15% of added value of manufacturing in Japan with annual sales exceeding $300 billion. Strong demands for increased productivity, higher product quality, more efficient use of energy and raw material, and tighter safety and environmental regulation have forced industrial processes very complex and highly integrated and process control systems significantly advanced. In this paper, an overview of the contribution of process control technology to the chemical industry is described historically along with the development of chemical industry in Japan.

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Control technology plays important and critical roles that determine product competitiveness in electrical and electronic industries. The application area of control technology ranges from traditional power systems and home appliances to modern information systems and ITS (Intelligent Transport Systems) apparatuses. The present paper first reviews application areas that cover energy and material, information and telecommunication, and personal and home apparatuses. Next it is shown how present HDD (Hard Disk Drives) are controlled for representative embedded applications. Finally as an example of supervisory control, operation scheme of water resource network is presented.

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In 1970’s engine control technology has been developed to improve the performance of emission control function. After that, many on-board control systems have been developed, for example ABS(Anti-lock Brake system)and Air Bag system. Today control & measurement technology is the key technology for automobile.

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A parameter estimation of nonlinear systems is discussed using the EBP-EWLS Learning Algorithm for an Interconnected Neural Network. A nonlinear system is of a form with a linear term of the current input signal, a coefficient of which is important for a control by a simple model matching method. The result is also extended to the case with time lag. Some simulation results are examined for many types of a test input signal.

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This paper provides a design method for two-degrees-of-freedom PID controllers including switched PD compensator based on bilinear matrix inequalities (BMIs). PID parameters can be exactly obtained by solving the BMI problems via branch and bound algorithms. A set of PD compensators is formulated by linear matrix inequalities (LMIs), the most effective PD parameter is selected out based on the switching structure. Numerical example is also shown.

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[in Japanese]

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