@article{Hayakawa_Hoshi_Oya_2022, title={Observer-Based Quadratic Guaranteed Cost Control for Linear Uncertain Systems with Control Gain Variation }, volume={7}, url={https://ojs.imeti.org/index.php/AITI/article/view/9252}, DOI={10.46604/aiti.2022.9252}, abstractNote={<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>}, number={3}, journal={Advances in Technology Innovation}, author={Hayakawa, Satoshi and Hoshi, Yoshikatsu and Oya, Hidetoshi}, year={2022}, month={Jun.}, pages={155–168} }