Publication

A simple nonlinear observer for state and unknown input estimation: DC motor applications

Journal Article (2020)

Journal

IEEE Transactions on Circuits and Systems II: Express Briefs

Pages

710-714

Volume

67

Number

4

Doc link

https://doi.org/10.1109/TCSII.2019.2920609

File

Download the digital copy of the doc pdf document

Authors

  • Martinez-Garcia, Citlaly

  • Astorga-Zaragoza, Carlos

  • Puig Cayuela, Vicenç

  • Reyes-Reyes, Juan

  • Lopez Estrada, Francisco Ronay

Abstract

The contribution of this brief is to propose a method based on a simple nonlinear observer with an easy-to-compute observer gain, in order to achieve both state and unknown input (UI) estimation. Since the structure of the original model of the process does not require any transformation, the nonlinear dynamics are preserved. This allows an accurate estimation of the states and the UIs or faults. Two particular cases involving dc motors are illustrated in simulation and an experiment using a permanent magnet dc motor is presented.

Categories

control theory.

Scientific reference

C. Martinez-Garcia, C. Astorga-Zaragoza, V. Puig, J. Reyes-Reyes and F.R. Lopez. A simple nonlinear observer for state and unknown input estimation: DC motor applications. IEEE Transactions on Circuits and Systems II: Express Briefs, 67(4): 710-714, 2020.