List of English Publication

@article{ShimLiberzon16,

title = {Nonlinear Observers Robust to Measurement Disturbances in an ISS Sense},

author = {Hyungbo Shim and Daniel Liberzon},

doi = {10.1109/TAC.2015.2423911},

year  = {2016},

date = {2016-01-01},

journal = {IEEE Transactions on Automatic Control},

volume = {61},

number = {1},

pages = {48-91},

abstract = {This paper formulates and studies the concept of quasi-Disturbance-to-Error Stability (qDES) which characterizes robustness of a nonlinear observer to an output measurement disturbance. In essence, an observer is qDES if its error dynamics are input-to-state stable (ISS) with respect to the disturbance as long as the plant's input and state remain bounded. We develop Lyapunov-based sufficient conditions for checking the qDES property for both full-order and reduced-order observers. We use these conditions to show that several well-known observer designs yield qDES observers, while some others do not. Our results also enable the design of novel qDES observers, as we demonstrate with examples. When combined with a state feedback law robust to state estimation errors in the ISS sense, a qDES observer can be used to achieve output feedback control design with robustness to measurement disturbances. As an application of this idea, we treat a problem of stabilization by quantized output feedback.},

keywords = {Control system synthesis, Lyapunov method},

pubstate = {published},

tppubtype = {article}

}