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This work considers the stabilization problem of a class of unstable first order linear systems with time delay. A methodology is proposed to tune a proportional-derivative (PD) controller. Necessary and sufficient conditions are stated in order to guarantee the stability of the delayed closed loop system. The main motivation for studying this problem arises when checking for systems with a considerable delay. The system performance when using a PID controller is poor because of the integral term.
Date of Conference: 26-28 Oct. 2011