Vibration Control

Voice Coil Actuators

60,000 lbf shaker
• 6 – 150 Hz frequency range

Shaken mass 16,000 lbm

Base Plate 3,000 lbm

Capacitor energy storage and PFN 


Designed to isolate electronics racks from rocket launch vibrations

Successful demonstration isolating 5,000 lb instrument rack.

Low Losses

Simple Power Electronics and Controls

Direct Drive Voice Coil Design (no mechanical components)

Incorporates passive spring to support static weight

Variable Reluctance

3250 lb peak force in X and Y axis

Operational design to 100 Hz

Resistance 0.53 ohms/coil

Inductance 0.082 Henries/coil

0.1” peak to peak radial displacement

User-controlled variable force, frequency, and amplitude

Very low and predictable friction

No Lubrication

Ability to run in a vacuum

Capable of running at very high speeds