DECREASED VIBRATION CONTROL FOR CENTRIFUGES - A NEW ADAPTIVE HYBRID CONTROL TECHNIQUE

This paper presents a new control approach which can restrain the vibr ation of centrifuges. In the new scheme, changed support stiffness and self-tuning feedforward PID control of the decreased vibration force are effectively combined. Some advanced techniques, (such as adaptive modification for unstable vibration regions, two-level computer contro l, curve-tracking control), are used to make the centrifuge system run in a minimum-vibration state. A horizontal centrifugal experiment is used to test the new control method. Experimental results show the eff ectiveness of the proposed scheme.