METHOD AND APPARATUS FOR DETERMINING BURNOUT RATE OF ELEMENT WIRE OF TWISTED CONDUCTOR

摘要

PROBLEM TO BE SOLVED: To accurately determine the burnout rate of element wires of twisted conductors of cables for movement used for industrial robots etc. and the locations of breakage of the element wires. SOLUTION: High-frequency pulse reflected waveforms S1-S3 are previously prepared according to a plurality of burnout rates of element wires. High-frequency pulses are injected to one point of a twisted conductor. Then a pulse reflected waveform B of the injected high-frequency pulses is recorded. The waveform B is compared with the previously prepared high-frequency pulse reflected waveforms S1-S3 to determine the burnout rate of element wires and to determine its position on the basis of the time (100 ns) of a negative peak value of the waveform B. COPYRIGHT: (C)2007,JPO&INPIT