A finite-time convergent observer with robustness to piecewise-constant measurement noise. (July 2015)

• Record Type: Journal Article
• Authors: Li, Yuchun; Sanfelice, Ricardo G.
• Is Part Of: Automatica. Volume 57(2015)
• Page Start: 222
• Page End: 230
• Publication Date: 2015-07
• Subjects: Estimation -- Observer -- Robustness; Automatic control -- Periodicals; Automation -- Periodicals; 629.805
• DOI: 10.1016/j.automatica.2015.04.013
• Languages: English
• ISSNs: 0005-1098

Abstract

Abstract: Motivated by the design of observers with good performance and robustness to measurement noise, the problem of estimating the state of a linear time-invariant system in finite time and robustly with respect to measurement noise is considered. Using a hybrid systems framework, a hybrid observer producing an estimate that converges to the plant state in finite time, even under unknown piecewise-constant noise, is presented. The stability and robustness properties of the observer are shown analytically and validated numerically.