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Device and method for measuring vibrations of a rotor

  • US 9,869,579 B2
  • Filed: 07/23/2015
  • Issued: 01/16/2018
  • Est. Priority Date: 07/28/2014
  • Status: Expired due to Fees
First Claim
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1. A measuring device for measuring vibrations of a rotor of an electric machine comprisinga guiding rod with a plate at one end of the guiding rod, the plate configured to abut at the rotor in operation of the measuring device,an actuator for inducing a shock to the rotor via the guiding rod and via the plate,the actuator comprising a piston movable along the guiding rod,a locking system that exerts a retaining force on the piston, wherein when a centrifugal force exerted on the piston from rotation of the rotor exceeds the retaining force, the piston moves along the guiding rod and impacts the plate, anda monitor device disposed relative to the rotor to measure vibrations at the rotor caused by induced shock from the piston impacting the plate.

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