Resonence probem in machine
Resonence probem in machine
(OP)
I am experiencing a system instability problem due to a resonence. The system is higly complex consisted of drives, voice colis, piezos,
springs and compex mechanics. It performes precision movement in 6 direction in 100 mm range (motion resolution is in nanometers).
Some times (once in a day) a present system resonance band around 300 Hz (bandwidth aroung 20 Hz) is excited to its 4-30 times
amplitude (upto few µm) due to resonance. It causes the system to be unstable for 10-20 seconds.
How I can solve this problem?
How I can find the source of resonence freuency?
Thanks
springs and compex mechanics. It performes precision movement in 6 direction in 100 mm range (motion resolution is in nanometers).
Some times (once in a day) a present system resonance band around 300 Hz (bandwidth aroung 20 Hz) is excited to its 4-30 times
amplitude (upto few µm) due to resonance. It causes the system to be unstable for 10-20 seconds.
How I can solve this problem?
How I can find the source of resonence freuency?
Thanks





RE: Resonence probem in machine
RE: Resonence probem in machine
RE: Resonence probem in machine
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RE: Resonence probem in machine
RE: Resonence probem in machine
RE: Resonence probem in machine
How can you use a strobe to see motion at 300 Hz in the micrometer range?
Walt
RE: Resonence probem in machine
I have a few suggestions based on Assumption that a
closed loop positional feedback system is present.
Some form of wear and tear , upsetting feedback systems ?
a favourite action , position that starts process off ?
external signals getting into feedback systems ?
Verify that external vibration is not an issue Chicken/Egg !
Experience in this field -None ,But Love a interesting Fault !
Good Luck