:: ICCAS 2015 ::

WA02		[OS] SICE-ICROS Joint Organized Session on Control Theory and Application
Time : 09:10~10:55 Room : 102		Chair : Kenji Sugimoto, Nara Institute of Science and Technology / (Min Cheol Lee, Pusan National University, )



09:10~09:25	WA02-1

Synchronization of linear agents with sector-bounded input nonlinearities
Kiyotsugu Takaba(Ritsumeikan University, Japan)

This paper is concerned with the local synchronization of linear agents subject to sector-bounded input nonlinearities over an undirected communication graph. We first derive a sufficient LMI condition for achieving the local synchronization for any nonlinearities satisfying a given sector condition. Based on this analysis, we present a sufficient LMI synthesis condition of a relative state feedback protocol which locally synchronizes the linear agents with arbitrary sector-bounded input nonlinearities.



09:25~09:40	WA02-2

PI controller gain tuning with FRIT in collective blade pitch control of floating offshore wind turbines
Koki Kakita, Naoyuki Hara, Keiji Konishi(Osaka Prefecture University, Japan)

Floating offshore wind turbines have attracted interest in recent years. In floating offshore wind turbines, generator output fluctuation and platform motions are caused by the variation of wind and waves. In this paper, a PI control in collective blade pitch control is used to suppress the fluctuation and motions, and PI controller gains are tuned by the FRIT (Fictitious Reference Iterative Tuning) method. We show that the tuned PI controller improves the disturbance suppression performance.



09:40~09:55	WA02-3

Controller Design for Liquid Level Control of Separator in an OTEC Plant with Uehara Cycle Considering Disturbances
Yoshitaka Matsuda, Tsukasa Shimada, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Yasuyuki Ikegami(Saga University, Japan)

This research deals with the design of PI controller for the liquid level control of separator in an ocean thermal energy conversion (OTEC) plant with Uehara cycle by considering some kinds of disturbances. The PI controller is designed for a liquid level model under H infinity constraint. The effectiveness of the designed PI controllers is evaluated through simulations considering disturbances.



09:55~10:10	WA02-4

Data-driven PID Gain Tuning for Liquid Level Control of a Single Tank Based on Disturbance Attenuation Fictitious Reference Iterative Tuning
Shiro Masuda(Tokyo Metropolitan University, Japan)

A direct design approaches based on input-output measurements with no need for help from a plant model have attracted attention from several researchers. We have proposed such a disturbance attenuation Fictitious Reference Iterative Tuning (FRIT) using input-output data generated by step-type disturbances, and showed the effectiveness of the approach through experiments of DC motor control and helicopter attitude control. The paper applies the approach to the experimental data for liquid level control of a single tank. The PID gains are tuned so that the liquid level of the single tank



10:10~10:25	WA02-5

The Evaluation of Scratch Reduction in Velocity Synchronization of Flying Touch Method by Using SMCSPO
Sung jin Kim, Min Cheol Lee, Hyun hee Kim, Sung min Yoon(Pusan National University, Korea, Republic of )

Scratch defects is occur due to impact drop and friction between the roller and slab in the conventional hot rolling method. The Flying Touch method is one of the proposed methods to improve the scratch defects. Flying Touch method is available to soft touch between the rollers and the slab. Because roller is unfixed and flexible. And Flying Touch method is proposed synchronization of the rollers' angular velocity and the slab's surface velocity. In this paper, a simulator was designed to apply and verify the Flying Touch method. After, the actual implementation was velocity synchronization of



10:25~10:40	WA02-6

Vibration control of a nuclear fuel rod maneuvering under water
Umer Hameed Shah, Mingxu Piao, Gyoung-Hahn Kim, Keum-Shik Hong(Pusan National University, Korea, Republic of )

This paper addresses the vibration control problem of a fuel transport system (FTS) in a nuclear power plant. The FTS transports the fuel rods in the nuclear reactor to desired locations within the fuel building. The fuel rods must be transported under water to avoid radiation leaks into the environment. It has been observed that a quick under-water maneuver causes vibrations that can damage the structure of the fuel rods. An open-loop control command is developed in this paper to transport the fuel rods under water quickly with minimal vibrations.

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