  The nanometer scale beam sizes at the interaction point in linear colliders
limit the allowable motion of the final focus magnets. We have constructed a
prototype system to investigate the use of active vibration damping to control
magnet motion. Inertial sensors are used to measure the position of a test
mass, and a DSP based system provides feedback using electrostatic pushers.
Simulation and experimental results for the control of a mechanically simple
system are presented.
