62Omnidirectional driving gear with two gear columns that are perpendicular to each otherDriving spur gearMotorTrayOmnidirectional transporting table Turbulence is a complex flow phenomenon that fluctuates in time and space. For example, most of the airflows outside bodies of automobiles and airplanes and most of the combustion gas flows inside engines of them are turbulent. However, due to its difficulty, the turbulence problem has remained unsolved for over a century, and is still one of the most important issues in fluid mechanics and combustion science. In order to create new theories and new technologies for predicting and controlling turbulence, it is important to understand the dynamics of vortices which are the components of turbulence. In our laboratory, therefore, vortex interactions as fundamental processes of turbulence, and vortex-flame interactions as fundamental processes of turbulent combustion are investigated by computer analysis and sometimes by hand analysis, and we aim to create a breakthrough to solve the turbulence problem. We are trying creative and fundamental researches.Ball casterOmnidirectional driving gearYamagata University Graduate School of Science and Engineering Research InterestFluid mechanics, CombustionE-mail ・ shinoda@yz.yamagata-u.ac.jpTel ・ +81-238-26-3221 (private office)Fax ・ +81-238-26-3205 (department office)HP・http://shinoda.yz.yamagata-u.ac.jp/index.htmlContent：ContentThe omnidirectional driving gear has two gear columns that are The omnidirectional driving gear has two gear columns perpendicular to each other. It can transmit power to arbitrary that are perpendicular to each other. It can transmit power directions like an XY-stage. Unlike an ordinary XY-stage, the to arbitrary directions like an XY-stage. Unlike an ordinary omnidirectional driving gear can be adapted to the curved surfaces XY-stage, the omnidirectional driving gear can be adapted to with various curvatures. With the planar omnidirectional driving gear, the curved surfaces with various curvatures. With the planar omnidirectional driving gear, the omnidirectional transporting the omnidirectional transporting table that can carry multiple objects table that can carry multiple objects to arbitrary directions to arbitrary directions has been developed as shown in the left has been developed as shown in the left figures. The upper figures. The upper tray on the plate can carry objects with magnetic tray on the plate can carry objects with magnetic force from force from the lower tray that is activated with the omnidirectional the lower tray that is activated with the omnidirectional driving gear on multiple driving spur gears deployed on a floor. driving gear on multiple driving spur gears deployed on a Appealing point：floor. The omnidirectional driving gear can realize very small and lightweight power transmission systems. It can be applied for Special objectivestransporting mechanisms, guiding devices and robotic arms. We can The omnidirectional driving gear can realize very small and design various mechanisms with the three-dimensional CAD lightweight power transmission systems. It can be applied for software, and control the mechanisms with electrical circuits and transporting mechanisms, guiding devices and robotic arms. computers. Our aim is to realize the human-centered civilization We can design various mechanisms with the three-with highly automated robotic system.dimensional CAD software, and control the mechanisms with electrical circuits and computers. Our aim is to realize the human-centered civilization with highly automated robotic system.Yamagata UniversityGraduate School of Science and Engineering Research Interest ：RoboticsYamagata University Graduate School of Science and EngineeringE-mail ：tadakuma@yz.yamagata-u.ac.jpResearch InterestTel ：+81-238-26-3893RoboticsFax：+81-238-26-3205E-mail ・ tadakuma@yz.yamagata-u.ac.jpTel ・ +81-238-26-3893Fax ・ +81-238-26-3205HP ：http://tadakuma.yz.yamagata-u.ac.jp/index.htmlHP・http://tadakuma.yz.yamagata-u.ac.jp/index.htmlContentSpecial objectivesOmnidirectional driving gear for various power transmission systemsAssociate Professor Riichiro TadakumaControl of Turbulence by Understanding Vortex Dynamics Omnidirectional driving gear for various power transmission systemsAssociate Professor Riichiro TadakumaAssociate Professor Masahisa Shinoda
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