In this paper, we study how to collect n balls moving with constant velocities in the Euclidean plane by k robots moving on straight track-lines through the origin. Since all the balls might not be caught by robots, d...
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Recently, the scheme of bi-directional optical communication with a mutual-pumped phase conjugate mirror (MPPCM) has attracted attention. Bi-directional communication enables the integration of device
Recently, the scheme of bi-directional optical communication with a mutual-pumped phase conjugate mirror (MPPCM) has attracted attention. Bi-directional communication enables the integration of device
This paper describes the safe control method on bilateral control system. The control stability in bilateral control under time variance communication delay does not always stand for operation safety. Local controller...
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This paper describes the safe control method on bilateral control system. The control stability in bilateral control under time variance communication delay does not always stand for operation safety. Local controller is needed to secure the safety when communication delay becomes large. A novel method to change over the local controller and global bilateral controller due to communication delay is suggested. At the same time, the stability of global bilateral control is also assured with the conventional stability assurance method. Experimental system that joints manipulators in Slovenia and Japan is constructed. The validity of the suggested method is shown with this experimental system.
Conformations of a single semiflexible polymer chain dissolved in a low molecular weight liquid crystalline solvent (nematogen) are examined by using a mean field theory. We takes into account a stiffness and partial ...
Conformations of a single semiflexible polymer chain dissolved in a low molecular weight liquid crystalline solvent (nematogen) are examined by using a mean field theory. We takes into account a stiffness and partial orientational ordering of the polymer. As a result of an anisotropic coupling between the polymer and nematogen, we predict a discontinuous (or continuous) phase transition from a condensed‐rodlike conformation to a swollen‐one of the polymer chain, depending on the stiffness of the polymer. We also study a single polymer chain confined in a smectic phase.
Smart antenna, which improves the performance of wireless systems, suppress all interfering signals, and increase the system capacity. The objective of this paper is to provide an analysis of system capacity when usin...
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Smart antenna, which improves the performance of wireless systems, suppress all interfering signals, and increase the system capacity. The objective of this paper is to provide an analysis of system capacity when using smart antenna with the orthogonal code. A new technique, which uses orthogonal codes in multiple beams to distinguish multiuser is introduced. The properties of linkair communications' large area synchronous (LAS) or smart codes, which are claimed to be fully orthogonal code and are used to combat major interferences, are studied. The effect of spatial multiple beams in an area where density of users is very condense in a cell is also examined. Finally, the system performance in term of system capacity is presented.
This paper studies the H/sub /spl infin// controller order reduction due to the stable invariant zeros and its application to a magnetic suspension system. First, we explore the H/sub /spl infin// controller order red...
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This paper studies the H/sub /spl infin// controller order reduction due to the stable invariant zeros and its application to a magnetic suspension system. First, we explore the H/sub /spl infin// controller order reduction due to the stable complex invariant zeros to address how we can go beyond the known results for the order reduction due to the unstable or real stable invariant zeros. We propose sufficient conditions for the existence of the reduced-order H/sub /spl infin// controllers due to the stable complex invariant zeros. If the proposed sufficient conditions are satisfied, we present two LMI based procedures to compute the reduced order H/sub /spl infin// controllers. Second, we address the application of these theoretical results to a mixed sensitivity problem for a magnetic suspension system with a flexible beam. The numerical computations of the reduced-order controllers and the comparison with the full-order controllers are reported. The numerical investigation carried out validates the proposed theoretical results.
An architecture design of the intelligent agent for speech recognition and translation is presented in this paper. The design involves the agent architecture and the method of the agent is used. The architecture desig...
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An architecture design of the intelligent agent for speech recognition and translation is presented in this paper. The design involves the agent architecture and the method of the agent is used. The architecture design shows the relationship between the intelligent agent and speech recognition also translation. The intelligent agent for speech recognition is called S-AGENT and T-AGENT for translation. The purpose of the S-AGENT is to facilitate for transmitting the speech data via Internet or network. The S-AGENT is acting as a data transmit control to ensure the transmitted speech data is securely delivered. The task of the T-AGENT is different from the S-AGENT. The T-AGENT is acting as information retrieval. It processes the output from the speech recognition and translates the output based on its information memory database. If the information cannot be found on its memory, it searches the information required from the database dictionary provided. At the same time, it learns the information and saves the information to its memory for the future purpose.
In this paper, we discuss the relational algebra and recursive relationships between binary and ternary relationships in entity-relationship modeling. We define the interpretation of the recursive tables that can be a...
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In this paper, we discuss the relational algebra and recursive relationships between binary and ternary relationships in entity-relationship modeling. We define the interpretation of the recursive tables that can be applied to the complicated relationships having the same participating entities. We propose a new approach to modeling that is suitable for representing self-similar objects and for creating hierarchical structures. It combines methods of the set theory for the recursive relations within a single modeling paradigm, allowing users to define self-similar, partially self-similar, or hierarchical systems in a consistent and flexible manner. The use of recursive relationships in the definitions of self-similar objects yields representations that can be rendered at varying levels of detail or precision at run time.
Smith predictor is a well-known method for compensating time delay in control systems. Therefore, it has been applied to many systems with time delay so far. However, delay time should be estimated precisely in this m...
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Smith predictor is a well-known method for compensating time delay in control systems. Therefore, it has been applied to many systems with time delay so far. However, delay time should be estimated precisely in this method. So, if time delay is fluctuant and unpredictable, like the communication delay over the Internet, performance of Smith predictor deteriorates. This paper proposes "communication Disturbance Observer". It regards the error caused by time delay as disturbance torque (or acceleration), then it can observe and compensate the error. Furthermore, it doesn't need to estimate the value of delay time; therefore it can be applied to control systems with fluctuant and unpredictable time delay. It can be said that control system with "communication Disturbance Observer" is robust to time delay and fluctuation of that. Effectiveness and robustness of proposed method is shown by result of simulation and experiment. In experiment, master-slave manipulator was used over the Internet. We were able to get the sense of touch from the environment of remote site.
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