WEBREVIEW

Characterisation of an Optical Strain Gauge for Pantograph Applications .

An optical strain gauge is developed and characterised for an active pantograph for
high-speed electrical trains applications. Indeed, the pantograph is subjected to a
continuous impact forces when it makes contact with the 25 kV overhead ac line.
To detect load behaviour experienced, by the electrical pick-up on the pantograph,
tests were carried out. The results show that the strain gauge responded linearly to
static load over the range 0 to 80 Newton. Also, a high repeatability was achieved
and acceptable amount of hysterisis was experienced. The influence of the
electromagnetic field on the optical strain gauge was sufficiently weak to be
neglected. Beside that the optical strain gauge has proved a high resistance to time
varying forces.


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