抄録
This paper deals with the robustness and the fragility of the H∞ control of a nonlinear magnetic suspension system using the feedback linearization, from an experimental point of view. At first, two nonlinear models are derived with different assumptions, in order to evaluate effectiveness of modeling. Next, for the resulting models, the H∞ control with the feedback linearization are conducted respectively. Then, the time response of the gap against a step disturbance is shown as an experiment. Finally, the usefulness of the detailed nonlinear model, the effect of the feedback linearization, and the robustness and the fragility of the feedback linearization-based control are evaluated from comparative experiments.
