10th International Symposium on Process Systems Engineering: - download pdf or read online

By Rita Maria de Brito Alves, Claudio Augusto Oller do Nascimento, Evaristo Chalbaud Biscaia Jr.

ISBN-10: 0444534725

ISBN-13: 9780444534729

This booklet comprises the court cases of the10th version of a chain of foreign symposia on technique structures Engineering (PSE)initiated in 1982. The designated concentration of PSE09 is how PSE equipment can help sustainable source structures and rising applied sciences within the parts of eco-friendly engineering.

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Additional info for 10th International Symposium on Process Systems Engineering: Part A

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Stiction describes the valve's stem (or shaft) sticking when small changes are attempted. Friction of a moving object is less than when it is stationary. Stiction can keep the stem from moving for small control input changes, and then the stem moves when there is enough force to free it. The result of stiction is that the force required to get the stem to move is more than is required to go to the desired stem position. 1. Stiction model A sticky valve has in the phase plot (Valve output (MV) versus Controller output (OP)), shown in Fig.

A good survey about stiction models was recently written by Garcia (2008). Furthermore, some authors have proposed to compute stiction parameters in real time. Choudhury et al. (2006) proposed two methods to quantify stiction parameters, based on ellipse fitting and c-clustering, using a one parameter empirical model. Subsequently, some authors have proposed to quantify stiction parameters using a more reliable model, with two parameters. Choudhury et al. (2008) have proposed a method based on optimization and grid search.

The trajectory and the colored time evolution for the ethane AI-1502A1, the temperature TI-1414, the steam to reboiler FIC-1430 and the reflux flow-rate FIC-1456, in clockwise order 4. Conclusions In this work, we implemented and discussed a strategy to model, visualize and analyze the information encoded in industrial process data using the Self-Organizing-Map. In particular, the proposed strategy was applied to an industrial distillation column allowing us to illustrate on simple displays how the clustering structure of the measurements corresponds to the operational modes of the units and the possibility to define an alternative control strategy for maintaining it in the normal operating state.

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10th International Symposium on Process Systems Engineering: Part A by Rita Maria de Brito Alves, Claudio Augusto Oller do Nascimento, Evaristo Chalbaud Biscaia Jr.

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