This paper proposes a robust state feedback design method based on a new Luenberger observer for uncertain systems with measurement output matrices containing uncertain parameters. First. in view of the problem that it is challenging to measure state variables in practice. an observer is designed through the feedback of the observation state. https://www.bekindtopets.com/quick-find-ICON-39290-Adjustable-Track-Bar-Kit-1999-2004-F250-F350-flash-buy/