In industrial processes, oscillatory and non oscillatory disturbances usually travel along propagation paths, and are indicative of degradation in control loops, disturbances, limitations in equipments or control system. In this work, a methodology based in two algorithms from literature to detect these disturbances and the root cause analysis of theses disturbances is proposed. The detection of oscillatory signals is done using the filtered autocorrelation from the power spectral density. The non-periodic disturbances are detected through analysis of principal components of the power spectral density filter. The diagnosis of both disturbances is made based on the cause and effect relations of the loops and energy analysis. The application ...
This dissertation focuses the importance of registering eventual frequency variations in Electric Po...
A Qualidade da energia elétrica é caracterizada pela disponibilidade da energia através de uma forma...
Análise de causa raiz de ocorrências de falha é uma tarefa extremamente importante para a recomposiç...
Made available in DSpace on 2016-12-23T14:07:27Z (GMT). No. of bitstreams: 1 Dissertacao de Adilson ...
O comportamento oscilatório de malhas de controle pode ser causado por variados motivos que são iner...
The profitability of any industrial process is closely related to its ability to maintain near optim...
Oscillations occurring in industrial process plants often reflect the presence of severe disturbance...
Oscillations in power systems are a common problem that cause wear and decreased electric power qual...
This subject of this thesis is the detection and diagnosis of distributed disturbances in chemical p...
Este trabalho apresenta o desenvolvimento de algoritmos para a análise automática de eventos de sobr...
Este trabalho apresenta um estudo da aplicação da Transformada de Fourier Janelada à Qualidade da En...
This paper reviews existing data-driven methods according to three criteria: the properties of the m...
This work presents the development of an algorithm using the Step-by-Step Method in the GUIDE module...
This paper proposes a method for detecting oscillations in non-stationary timeseries based on the st...
The plant-wide disturbance can affect the product quality, manufacturing costs, process safety and e...
This dissertation focuses the importance of registering eventual frequency variations in Electric Po...
A Qualidade da energia elétrica é caracterizada pela disponibilidade da energia através de uma forma...
Análise de causa raiz de ocorrências de falha é uma tarefa extremamente importante para a recomposiç...
Made available in DSpace on 2016-12-23T14:07:27Z (GMT). No. of bitstreams: 1 Dissertacao de Adilson ...
O comportamento oscilatório de malhas de controle pode ser causado por variados motivos que são iner...
The profitability of any industrial process is closely related to its ability to maintain near optim...
Oscillations occurring in industrial process plants often reflect the presence of severe disturbance...
Oscillations in power systems are a common problem that cause wear and decreased electric power qual...
This subject of this thesis is the detection and diagnosis of distributed disturbances in chemical p...
Este trabalho apresenta o desenvolvimento de algoritmos para a análise automática de eventos de sobr...
Este trabalho apresenta um estudo da aplicação da Transformada de Fourier Janelada à Qualidade da En...
This paper reviews existing data-driven methods according to three criteria: the properties of the m...
This work presents the development of an algorithm using the Step-by-Step Method in the GUIDE module...
This paper proposes a method for detecting oscillations in non-stationary timeseries based on the st...
The plant-wide disturbance can affect the product quality, manufacturing costs, process safety and e...
This dissertation focuses the importance of registering eventual frequency variations in Electric Po...
A Qualidade da energia elétrica é caracterizada pela disponibilidade da energia através de uma forma...
Análise de causa raiz de ocorrências de falha é uma tarefa extremamente importante para a recomposiç...