Re: [ATM] Active damping

[Ken Hunter <atm_ken_hunter@yahoo.com>]

OK... Lets analyze this again for at least the tenth time...
 
We build a lightweight telescope to reduce weight and the size of the load we have to carry!
 
To compensate for the problems caused by the lightening of the members, we insert adaptive detectors, filters, computers and actuators... not to mention the power supplies, wasted energy etc...
 
Why not just build a REAL telescope instead? Remember the KISS principle?
 
Ken Hunter
 


Don Clement <clement.focuser@verizon.net> wrote:




> You could also run a loose piece of rope from one end to the other inside
each truss tube > to absorb the vibrational energy. Just like HAM RADIO
operators have been doing in
> their big aluminum tubed beam antennas for generations now.

One of the major advantages of active dampening over passive dampening (like
the rope) is that is doesn't take several or even one complete cycle to
correct unwanted vibration. If the system is modeled correctly, or with
adaptive filters, only a portion of a cycle is needed for corrective action
to be applied. With active dampening, the system is damped almost before
vibration can occur.

Don Clement
Running Springs, California

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