Experiments In Robust Unbalance Response Control

The stability and performance robustness of an algorithm for the suppression of unbalance induced vibration of rotors supported in magnetic bearings is examined in a series of experiments. The results are used to validate previously reported analysis and synthesis tools. The synthesis results produce an adaptation algorithm gain matrix which is robust to structured uncertainty in the rotor. Three synthesized gain matrices were tested. Each resulted in significantly greater robustness than the standard solution of the problem. The experimental results also demonstrate that the degree ofstabilit.v and performance robustness obtained with the synthesized gain matrices was very close to that specified in the design procedure.