| 摘要 |
PROBLEM TO BE SOLVED: To provide a rail vibration method for axial force measurement and apparatus of the same, improving reliability in axial force evaluation by vertically and/or horizontally vibrating a rail through the use of ceramic oscillators which exert no electromagnetic effects, measuring the natural frequency of the rail, and also measuring an axial force received by the rail. SOLUTION: The rail vibration apparatus for axial force measurement is equipped with: the ceramic oscillators 5 and 5' arranged in the head top surface 6A and the top side surface 6E of a rail; a fundamental frequency generator for output of a pulse waveform having a frequency matched with the natural frequency mode of the ceramic oscillators 5 and 5'; a low-frequency oscillator for generating a low-frequency sine-wave waveform; and a mixer for mixing output from the fundamental frequency generator with output from the low-frequency oscillator. The ceramic oscillators 5 and 5' are driven on the basis of an output waveform from the mixer to oscillate the ceramic oscillator 5 and measure an axial force of the rail. COPYRIGHT: (C)2011,JPO&INPIT
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