Length Measurement for Pipes with Curvatures and Branches Using Stationary Wave

Abstract

The authors previously proposed a length measurement system for straight pipes using stationary waves, which were generated in the pipe. The system which modeled the stationary waves as output of a linear dynamic system enabled to realize an on-line high-accurate pipe length measurement. This paper presents a length measurement system for pipes with curvatures and branches by extending the preproposed measurement system and experimental results show that accurate pipe length measurement is realized by the proposed method.