Sequential state estimation of nonlinear/non-Gaussian systems with stochastic input for turbine degradation estimation
| Autor: | Houman Hanachi, Ying Chen, Avisekh Banerjee, Jie Liu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Engineering Mathematical optimization Gaussian Aerospace Engineering 02 engineering and technology Dynamical system Turbine symbols.namesake 020901 industrial engineering & automation 0203 mechanical engineering Control theory Civil and Structural Engineering business.industry Mechanical Engineering System identification Observable Computer Science Applications Nonlinear system 020303 mechanical engineering & transports Control and Systems Engineering Signal Processing symbols Benchmark (computing) Particle filter business |
| Zdroj: | Mechanical Systems and Signal Processing. :32-45 |
| ISSN: | 0888-3270 |
| DOI: | 10.1016/j.ymssp.2015.10.022 |
| Popis: | Health state estimation of inaccessible components in complex systems necessitates effective state estimation techniques using the observable variables of the system. The task becomes much complicated when the system is nonlinear/non-Gaussian and it receives stochastic input. In this work, a novel sequential state estimation framework is developed based on particle filtering (PF) scheme for state estimation of general class of nonlinear dynamical systems with stochastic input. Performance of the developed framework is then validated with simulation on a Bivariate Non-stationary Growth Model (BNGM) as a benchmark. In the next step, three-year operating data of an industrial gas turbine engine (GTE) are utilized to verify the effectiveness of the developed framework. A comprehensive thermodynamic model for the GTE is therefore developed to formulate the relation of the observable parameters and the dominant degradation symptoms of the turbine, namely, loss of isentropic efficiency and increase of the mass flow. The results confirm the effectiveness of the developed framework for simultaneous estimation of multiple degradation symptoms in complex systems with noisy measured inputs. |
| Databáze: | OpenAIRE |
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