Estimation of the instantaneous friction coefficients of sliding isolators subjected to bi-directional orbits through a nonlinear state observer

2021 ◽  
Vol 249 ◽  
pp. 113374
Author(s):  
E. Gandelli ◽  
G. Lomiento ◽  
V. Quaglini ◽  
S. Strano ◽  
M. Terzo ◽  
...  
Keyword(s):  
State Observer ◽  
Friction Coefficients ◽  
Nonlinear State

scholarly journals The Design of Nonlinear State Observer and its Application in Power Plant

2014 ◽  
Vol 61 ◽  
pp. 787-790
Author(s):  
Guolian Hou ◽  
Rong Huang ◽  
Xu Bai ◽  
Jianhua Zhang
Keyword(s):  
Power Plant ◽  
State Observer ◽  
Nonlinear State

scholarly journals SOC Estimation of Multiple Lithium-Ion Battery Cells in a Module Using a Nonlinear State Observer and Online Parameter Estimation

Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1620 ◽  
Author(s):  
Ngoc-Tham Tran ◽  
Abdul Khan ◽  
Thanh-Tung Nguyen ◽  
Dae-Wook Kim ◽  
Woojin Choi
Keyword(s):  
Parameter Estimation ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
State Observer ◽  
Soc Estimation ◽  
Nonlinear State ◽  
Battery Cells

Robust Nonlinear Control of Mode-Coupling-Based Vibrations by Using High-Gain Observer and Sliding-Mode Controller

2020 ◽  
Vol 143 (2) ◽  
Author(s):  
Lyes Nechak
Keyword(s):  
Nonlinear Control ◽  
Mode Coupling ◽  
Sliding Mode ◽  
High Gain ◽  
State Observer ◽  
Sliding Mode Controller ◽  
Coupling Mechanism ◽  
Robust Nonlinear Control ◽  
High Gain Observer ◽  
Nonlinear State

Abstract This paper is dedicated to the robust nonlinear control of friction-induced vibrations (FIV), more particularly those generated according to the mode-coupling mechanism. A nonlinear scheme which consists of a sliding-mode controller implemented by using a high-gain state observer is proposed. The main objective is to suppress or mitigate the generated vibrations by taking into account of the nonlinearities and uncertainties inherent to friction systems. Hence, this study proposes the analysis of the closed-loop performances of the high-gain observer-based sliding-mode controller when used for the active control of vibrations issued from the mode-coupling mechanism. Based on numerical simulations, the proposed controller has shown suitable performances distinguished from an effective suppress of the generated vibrations. Otherwise, it is shown that the gain of the used nonlinear state observer must be tuned in order to ensure a suitable compromise between the robustness level of the performances with respect to parameter uncertainty and the robustness level with respect to the measurement noise.

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