%0 Journal Article
	%A Jason Sheng-Hong Tsai and  Faezeh Ebrahimzadeh and  Min-Ching Chung and  Shu-Mei Guo and  Leang-San Shieh and  Tzong-Jiy Tsai and  Li Wang
	%D 2016
	%J International Journal of Computer and Information Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 113, 2016
	%T Optimal Linear Quadratic Digital Tracker for the Discrete-Time Proper System with an Unknown Disturbance
	%U https://publications.waset.org/pdf/10004637
	%V 113
	%X In this paper, we first construct a new state and disturbance estimator using discrete-time proportional plus integral observer to estimate the system state and the unknown external disturbance for the discrete-time system with an input-to-output direct-feedthrough term. Then, the generalized optimal linear quadratic digital tracker design is applied to construct a proportional plus integral observer-based tracker for the system with an unknown external disturbance to have a desired tracking performance. Finally, a numerical simulation is given to demonstrate the effectiveness of the new application of our proposed approach.

	%P 929 - 935