| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 721220 | IFAC Proceedings Volumes | 2006 | 6 Pages |
The practical control problems are hard to solve using analytical approaches. The solutions frequently obtained, based on a theoretical concept, are quasi-empirical and they are reflecting the expert knowledge regarding the controlled process of the technologist and the control engineer knowledge regarding the system behaviour. These knowledge are available only on a punctual manner and refers to a low number of functional/working regimes that can be synthesized into bases of rules that suites to interpolative methods. The paper presents in this context the temperature control of the CO2 after the vaporizers, part of a geothermal power plant. A solution that uses as controller a three points relay with feedback loop is proposed. The dynamic of the controller is adapted using interpolative manners based on the variations of the major measurable disturbances acting on the vaporizers. The proposed solution, designed quasi-empiric, brings better dynamic and stationary performances compared to the actual control version. There are presented: the structure of the controller, the model of vaporizers block used in the design, the design steps of controller parameters and the dynamic performances of the control systems obtained by simulations.
