Combined Degradation Process and Remaining Useful Life Improvement in an Actuator

Mabrouk, Nabila; Moulahi, Med Hedi; Hmida, Fayçal Ben

doi:10.1109/scc47175.2019.9116137

Cited by 1 publication

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Estimating the magnitude and characteristics of multiplicative faults has become an increasing attract in control theory due to the practical importance of decoupling their structure efects or parameter in the model or system and improving fault tolerant control concept for nonlinear systems. We can use stochastic process to model the actuator degradation [16][17][18][19]. Te actuator environment can infuence the deterioration process and strongly depends on several factors [20] (shock, temperature, and load variation) of the monitored system.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Multiplicative and Additive Actuator Faults Estimation‐Based Sliding Mode FTC for a Class of Uncertain Nonlinear System

Mabrouk

Brahim

Hmida

2023

Mathematical Problems in Engineering

View full text Add to dashboard Cite

In this article, an adaptive sliding mode fault tolerant control (FTC) is improved in the case of uncertain nonlinear system which is affected by both multiplicative and additive faults in actuator. Especially, when the nonlinear system is modeled by Takagi–Sugeno (T-S) fuzzy system with local nonlinear model. The main contribution of this paper is developing a model of multiplicative faults, which offers a more realistic dynamic evolution of the actuator degradation. The degradation process is modeled by Wiener process and estimated by the maximum likelihood estimation (MLE). Sliding mode observer (SMO) is conceived to realize the additive actuator faults using convex multiobjective optimization. On these bases, the estimated multiplicative and additive actuator faults are used to design the adaptive sliding mode controller (SMC). Finally, the proposed fault-tolerant control scheme is demonstrated by the results of inverted pendulum system simulation.

show abstract