This paper introduces Linear Quadratic Gaussian (LQG) control design for both continuous and discrete-time domains, and a discrete-time version of the Kalman filter for state estimation.
Chan, S. C. (2011). 線性系統與T-S模糊系統的強健控制器設計 [doctoral dissertation, National Central University]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0031-1903201314425748