Interval Observer Design for Switched Systems with State and Output Uncertainties: Application to vehicle sideslip angle estimation

2019 ◽  
Author(s):  
Sara Ifqir ◽  
Dalil Ichalal ◽  
Naima Ait-Oufroukh ◽  
Said Mammar
Keyword(s):  
Switched Systems ◽  
Observer Design ◽  
Sideslip Angle ◽  
Angle Estimation ◽  
Interval Observer

Interval observer design for continuous-time switched systems under known switching and unknown inputs

2018 ◽  
Vol 93 (5) ◽  
pp. 1088-1101 ◽  
Author(s):  
H. Ethabet ◽  
T. Raïssi ◽  
M. Amairi ◽  
C. Combastel ◽  
M. Aoun
Keyword(s):  
Continuous Time ◽  
Switched Systems ◽  
Observer Design ◽  
Unknown Inputs ◽  
Interval Observer

scholarly journals Interval observer design method for asynchronous switched systems

2020 ◽  
Vol 14 (8) ◽  
pp. 1082-1090 ◽  
Author(s):  
Jun Huang ◽  
Xiang Ma ◽  
Xudong Zhao ◽  
Haochi Che ◽  
Liang Chen
Keyword(s):  
Switched Systems ◽  
Design Method ◽  
Observer Design ◽  
Interval Observer

scholarly journals On Interval Observer Design for Continuous-Time LPV Switched Systems

2020 ◽  
Vol 24 (3) ◽  
pp. 539-555
Author(s):  
Chaima Zammali ◽  
Jérémy Van Gorp ◽  
Tarek Raissi
Keyword(s):  
Switched Systems ◽  
Convex Combination ◽  
Sufficient Conditions ◽  
Observer Design ◽  
Time Varying ◽  
Quadratic Lyapunov Function ◽  
New Approach ◽  
The Past ◽  
Time Varying Parameters ◽  
Interval Observer

State estimation for switched systems with time-varying parameters has received a great attention during the past decades. In this paper, a new approach to design an interval observer for this class of systems is proposed. The scheduling vector is described by a convex combination so that the parametric uncertainties belong into polytopes. The considered system is also subject to measurement noise and state disturbances which are supposed to be unknown but bounded.The proposed method guarantees both cooperativity and Input to State Stability (ISS) of the upper and lower observation errors. Sufficient conditions are given in terms of Linear Matrices Inequalities (LMIs) using a common quadratic Lyapunov function. Finally, a numerical example is provided to show the effectiveness of the designed observer.

Robust Sideslip Angle Estimation for Over-Actuated Electric Vehicles: A Linear Parameter Varying System Approach

2013 ◽  
Author(s):  
Yan Chen ◽  
Junmin Wang
Keyword(s):  
Friction Force ◽  
System Approach ◽  
Estimation Method ◽  
Observer Design ◽  
Linear Parameter ◽  
Sideslip Angle ◽  
Angle Estimation ◽  
Friction Forces ◽  
Linear Parameter Varying ◽  
Parameter Varying

A new estimation method for estimating the vehicle sideslip angle, mainly based on a linear parameter varying (LPV) model with independently estimated tire friction forces, is proposed for electric ground vehicles (EGVs) with four independent in-wheel motors. By utilizing the individual wheel dynamics, the longitudinal ground friction force is estimated from a PID observer based on a descriptor linear system approach. Moreover, the lateral ground friction force for each wheel is estimated through the friction ellipse relationship given the estimated longitudinal friction force, without relying on explicit tire models. Since the estimation errors of friction forces may bring parameter uncertainty for the LPV system, robust analysis with desired H-infinity performance is given for the observer design of the LPV modeling. This method is specially proposed for large tire slip angles and lateral friction forces. Simulation results for different maneuvers validate this novel sideslip angle estimation method.

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