Each isolator houses five piezoelectric actuators and a passive rubber mount 100 times stiffer than standard pneumatic isolators.
The actuators control vibration along three axes. Piezoelectric actuators receive information on disturbances through absolute velocity sensors. The information from the sensors causes the actuators to expand and contract as required, moving out of the way of the vibration and diminishing or eliminating its impact.
Stacis is a six-degree-of-freedom system with a 0.20-Hz resonant frequency, 0.30-to 250 Hz active bandwidth, and a 0.30-second settling time after a step input.
Steven Ryan, Technical Manufacturing Co., 15 Centennial Dr., Peabody, MA 01960; (978)532-6330.
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