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Instrumented platform for vibration sensitive equipment

  • US 8,196,891 B2
  • Filed: 11/21/2007
  • Issued: 06/12/2012
  • Est. Priority Date: 10/24/2003
  • Status: Active Grant
First Claim
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1. A platform assembly that supports a vibration-sensitive payload, comprising:

  • a tabletop having a first surface coupled to the vibration-sensitive payload, a second surface, and an inner core located between said first and second surfaces;

    a damper located within the inner core, the damper including an active actuator therein;

    a vibration sensor located within the inner core; and

    a control circuit coupled to the vibration sensor and the active actuator, the control circuit configured to cause the active actuator to create an active force that emulates an effect of a viscous damper in a frequency domain encompassing a plurality of natural frequencies of a flexural vibration of the first surface.

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