Resumen

CASTRO-MONTOYA, A.J.; VERA-MONTERROSAS, F  y  QUINTANA-SILVA, J.A.. Fluid Flow Fuzzy Control of a Laboratory Station. Inf. tecnol. [online]. 2004, vol.15, n.3, pp. 45-52. ISSN 0718-0764.  doi: 10.4067/S0718-07642004000300007.

A fuzzy controller was designed (CLD) to regulate the fluid flow in laboratory station. In order to measure the performance of the CLD, different types of tests were applied and their results were compared with the results using a conventional PID. The fuzzy controller obtained better results in response to stepping, from which we concluded that this could be used in plant startups. For inverse step-type disturbances, the PID is not able to follow the reference, due to the non-linearity of the process, while the CLD produced good results. For ramp type disturbances, the PID showed better tracking of the ramps than the CLD, since its behavior is linear. A significant difference was not observed when using the fuzzy inference method. It is concluded that there is no major difference in the use of these inference methods, especially if the reference point has constant segments

Palabras clave : flow control; controller design; fuzzy systems; inference method; PID controller.