document: Bandwidth vs. gains design of H/sub infinity / tracking controllers for current-fed induction motors Describes a systematic procedure for designing speed and rotor flux norm tracking H/sub infinity / . controllers with unknown load torque disturbances for current-fed induction motors . A new effective design tool is developed to allow selection of the control gains so as to adjust the disturbances ' rejection capability of the controllers in the face of the bandwidth requirements of the closed-loop system . Application of the proposed design procedure is demonstrated in a case study , and the results of numerical simulations illustrate the satisfactory performance achievable even in presence of rotor resistance uncertainty
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