Yang, K. Choi, Y. Chung, W.K. 2024-01-12T08:44:36Z 2024-01-12T08:44:36Z 2022-03-07 2003-12 0191-2216 https://pubs.kist.re.kr/handle/201004/82596 The disturbance observer (DOB) has been widely used in high speed and high precision motion control applications. Though most of DOB's have been implemented as the discrete-time form in digital devices, we are still short of the researches on discrete-time DOB in spite of rich references on continuous-time DOB. In this paper, we will discuss the disturbance rejection property and measurement noise effect of a discrete-time DOB. Especially, we will focus on revealing the role of sampling time in designing the discrete-time DOB for second order systems. Finally, we show the validity of analysis through simulations and experiments for optical disk drive systems. English IEEE Performance Analysis of Discrete-Time Disturbance Observer for Second-Order Systems Conference 1 42nd IEEE Conference on Decision and Control, pp.4877 - 4882 42nd IEEE Conference on Decision and Control 4877 4882 US Maui, HI 2003-12-09 Proceedings of the IEEE Conference on Decision and Control 2-s2.0-1542320121