システム制御情報学会論文誌
Online ISSN : 2185-811X
Print ISSN : 1342-5668
ISSN-L : 1342-5668
定在波を用いた分岐管の長さおよび分岐点位置の計測
岡本 昌幸リズキエフ ファルーフ田中 正吾
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2002 年 15 巻 9 号 p. 469-476

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The authors previously developed a length measurement system for straight pipes using Kalman filters and maximum likelihood method. In the system, the stationary waves in pipes were represented by state variables of a linear dynamic system, and on-line accurate length measurement of straight and curved pipes was achieved. In many situations, however, there are necessities of length measurement not only for straight and curved pipes but also for branch pipes.
The paper proposes a measurement system of pipe length and branch point for branch pipes. A criterion for optimal modes of the stationary wave is also presented, and experiments show that an accurate measurement is realized with the method.

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