FAQs <<
hwl SCIENTIFIC INSTRUMENTS GmbH, Derendinger Strasse 40, 72072 Tübingen, Germany

Q2: Why active damping and what are the limits of passive damping?

A2: Passive systems do not damp vibrations at low frequencies because of their
                 resonance frequency in that region. To improve this disatvantage passive
                system have to be very soft resulting in higher latencies between disturbances.
Active systems overcome this limit when applying inertial velocity in a feedback
              loop (analog electronic).
The advantages of active systems over passive systems are:
  • inherently stiff
  • rapid recovery from shock (1-10ms)
  • no air required
  • no setup time required
  • small size
  • better performance than the best passive systems
See chapter 'TECHNOLOGY' for further details
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