1995 Fiscal Year Final Research Report Summary
Simulation and Control Design of Automatic Pouring System
| Project/Area Number |
06555070
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Intelligent mechanics/Mechanical systems
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
TERASHIMA Kazuhiko Toyohashi Univ. of Technology, Faculty of Engineering, Professor, 工学部, 教授 (60159043)
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| Co-Investigator(Kenkyū-buntansha) |
OSADA Toshio Osada Casting Company, Researcher, 研究員
YOSHIDA Ken'ichi Fujiwa Electric Company, Researcher, 研究員
MAEDA Yasuhiro Nagoya University, Faculty of Engineering, Research Associate, 工学部, 助手 (10240813)
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| Project Period (FY) |
1994 – 1995
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| Keywords | Automatic Pouring / Simulation / Pouring Control / Liquid vibration / Container Jransber Control / Preshaping Control / H^* Control / Sola-Mac method |
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| Research Abstract |
1. Automatic pouring process is constructed of a pouring process injecting molten metal into a mold and also transfering a poring machine from a certain place to an another place. In the present researches, the above two problems have been studied among four reserchers working in universities institution (Terashima, Toyohashi University of Technology ; Maeda, Natoya University), casting machine builder (Yoshida, Fujiwa Electric Company) and Casting Production Maker (Osada, Osada Casting Company). The results obtained in this researches are the followings.
2. With respect to pouring proces, modelling, simulation and control of an automatic pouring system of tilting-type considering the fluid behavior. A mathematical model is built usitn two dimensional continuity and Navier-stokes equations with the term of tank rotation. Model validity is confirmed by experiments. The effect of operated variables like the tank shape, the position of rotary shaft and the angular velocity of tank rotation is analyzed on the fluid behavior during pouring. Flow rate control and vibration control using preshaping theory guaranteeing the posotion control of tank angle are als given.
3. With respect to transferring process, we proposed the liquid container transfer system with the robustness for the change of liquid level. H-infinity control theory has been applied to this system to obtain the robustness for the change of liquid level. Furthermore, a reference trajectory is reasonably determined by an optimization method of Fletcher Reefves combined with a clipping-off technique to suppress the sloshing (liquid vibration). Through simulations and experiments, the effectiveness of the present control system has been demonstrated.
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