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Hamashima H.,Kumamoto Industrial Research Institute | Shibuta M.,Kumamoto University | Itoh S.,Okinawa National College of Technology
Materials Science Forum | Year: 2011

The food processing technology using a shock wave can prevent deterioration of the food by heat because it can process food in a short time. Generally, since the shock wave used for food processing is generated by underwater explosion, the load of a shock wave to the food becomes very complicated. Therefore, in order to process safely, it is important to clarify the behaviors of the shock wave and the bubble pulse generated by underwater explosion. In this research, in order to investigate the behavior of the shock wave in the water tank used for food processing, the optical observation experiment and the numerical simulation were performed. In the experiment, the shock wave generated by underwater explosion was observed with the high-speed video camera. The numerical simulation about the behavior of bubble pulse was performed using analysis software LS-DYNA. Comparing and examining were performed about the experimental result and the numerical simulation result. The result of the numerical simulation about the behavior of the shock wave generated by underwater explosion and the shock wave generated by the bubble pulse and the bubble pulse was well in agreement with the experimental result. © (2011) Trans Tech Publications.


Michino R.,Kumamoto Industrial Research Institute | Mizumoto I.,Kumamoto University
International Journal of Advanced Mechatronic Systems | Year: 2013

In this paper, a robust adaptive controller design method for non-holonomic mobile robots with the state depended uncertainties in the non-holonomic constraints is proposed. The considered uncertainties are Lipschitz. The designed robust adaptive controller is rather a simple structure, since it has only one adaptive adjusting term which is a feedback gain designed based on high gain technique. Further, the controller achieves not only the stability of the controlled system but also convergence to a small region around origin by increasing the design parameters. Copyright © 2013 Inderscience Enterprises Ltd.


Michino R.,Kumamoto Industrial Research Institute | Mizumoto I.,Kumamoto University
International Journal of Advanced Mechatronic Systems | Year: 2011

This paper presents a design method of high gain adaptive output feedback controller for non-linear systems with higher order relative degree and some uncertainties in control input term. The controlled system is transformed by two virtual filters and the control input is designed so as to make the virtual filter's signal a high gain adaptive control signal using backstepping strategy in the filter dynamics. The proposed method is useful in cases where only the output signals are available. Copyright © 2011 Inderscience Enterprises Ltd.


Michino R.,Kumamoto Industrial Research Institute | Sakamoto Y.,Kumamoto University | Mizumoto I.,Kumamoto University
Proceedings of the SICE Annual Conference | Year: 2011

In this paper, a high gain adaptive control is investigated for nonholonomic systems with uncertain control coefficient. The designed adaptive controller is rather simple, since it has only one adaptive adjusting term. The application of this controller to a nonholonomic wheeled mobile robot is considered as an illustrative example. © 2011 SICE.


Michino R.,Kumamoto Industrial Research Institute | Sakamoto Y.,Kumamoto University | Mizumoto I.,Kumamoto University
2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012 | Year: 2012

In this paper, we propose the design method of a high gain adaptive feedback controller for uncertain nonholonomic systems. The systems have some uncertainties in the dynamics and the nonholonomic constraints. To show the effectiveness of the proposed method, the application of the controller to a nonholonomic wheeled mobile robot is described in the numerical simulation. © 2012 Intl Jrnal Advanced Mech.

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