TY - JOUR AU - Hayakawa, Satoshi AU - Hoshi, Yoshikatsu AU - Oya, Hidetoshi PY - 2022/06/09 Y2 - 2024/03/28 TI - Observer-Based Quadratic Guaranteed Cost Control for Linear Uncertain Systems with Control Gain Variation JF - Advances in Technology Innovation JA - Adv. technol. innov. VL - 7 IS - 3 SE - Articles DO - 10.46604/aiti.2022.9252 UR - https://ojs.imeti.org/index.php/AITI/article/view/9252 SP - 155-168 AB - <p>This study proposes a method for designing observer-based quadratic guaranteed cost controllers for linear uncertain systems with control gain variations. In the proposed approach, an observer is designed, and then a feedback controller that ensures the upper bound on the given quadratic cost function is derived. This study shows that sufficient conditions for the existence of the observer-based quadratic guaranteed cost controller are given in terms of linear matrix inequalities. A sub-optimal quadratic guaranteed cost control strategy is also discussed. Finally, the effectiveness of the proposed controller is illustrated by a numerical example. The result shows that the proposed controller is more effective than conventional methods even if system uncertainties and control gain variations exist.</p> ER -