IMI Colloquium

鉄道線路保守業務、（以下、保線業務）で古くより用いてきた「弦で軌道の変形を測り修正移動量を演算する」手法の中に、任意の入力データを定常波（位相差・直流成分なし）に分離する特殊なフーリエ変換機能の内在が明らかになった。
これにより、どのような区間であっても「軌道の連続」が必ず保証される修正移動量が導ける特性や、不可避に生じる測定誤差が第１～５定常波に９５％集中する特性を利用した誤差除去法、加えて、整備後の軌道には（１／Ｆ)^2 [Ｆ：周波数]ゆらぎの成分が自然と残る特性など、保線業務上の実メリットが理論的に明らかになった。
あわせて、本知見の他工学分野への応用の可能性について考察する。

Title : Discovery of standing wave separation method inherent in railway track maintenance method and possibility for application to other engineering fields

Abstract :
Since ancient times, track maintenance work has used a method of measuring the deformation of track geometry with strings and calculating the displacement value for maintenance work.
Within this method, the existence of a special Fourier transform that separates arbitrary input data into a standing wave has become clear.
Based on this new finding, it became clear theoretically that the following advantages of the real track maintenance work can be obtained.
· Be able to derive the answer that guarantees the continuity of the track geometry without fail regardless of the measurement section.
· The influence of measurement error should concentrate 95% on the first to fifth standing waves.
· The components of the fluctuation (1/F^2 F:Frequency) remain in the track geometry after maintenance.
In addition, I would like to examine this possibility for applicability to other engineering fields.