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  • 标题:Robust sensor fault detection and isolation of an anerarobic bioreactor modeled as a descriptor-LPV system
  • 本地全文:下载
  • 作者:F.R. López-Estrada ; J.H. Castañon Gonzáles ; J.C. Ponsart
  • 期刊名称:IFAC PapersOnLine
  • 印刷版ISSN:2405-8963
  • 出版年度:2015
  • 卷号:48
  • 期号:26
  • 页码:176-181
  • DOI:10.1016/j.ifacol.2015.11.133
  • 语种:English
  • 出版社:Elsevier
  • 摘要:AbstractThis work is dedicated to the design of a robust fault detection system for an anaerobic bioreactor modeled as a Descriptor Linear Parameter Varying system (D-LPV) system with unmeasurable gain scheduling functionss. The main goals are: first, an accurate D-LPV representation of the nonlinear model is obtained by considering the sector nonlinearity modeling approach. Second, a LPV observer is designed to estimate the bioprocess states variables. The observer considers the gains scheduling functions depending on estimated states due to the lack of a biomass mass sensor. Third, in oder to perform fault detection and isolation, by mean of residual generation, a bank of observers is designed. For each observer, sufficient conditions to guarantee asymptotic stability and robustness against disturbance are given by a set of feasible Linear Matrix Inequalities (LMIs). Finally, some simulations in fault-free and faulty operations are considered on the bioreactor system.
  • 关键词:KeywordsAnaerobic-bioreactorLPV systemsdescriptor systemsfault detectionfault estimationobserver design
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