By João M. Lemos, Rui Neves-Silva, José M. Igreja (auth.)

This publication describes tools for adaptive keep an eye on of distributed-collector sun fields: vegetation that acquire solar power and convey it in thermal shape. Controller layout equipment are provided that may conquer problems present in those kind of plants:

  • they are distributed-parameter platforms, i.e., structures with dynamics that depend upon house in addition to time;
  • their dynamics is nonlinear, with a bilinear structure;
  • there is an important point of uncertainty in plant knowledge.

Adaptive equipment shape the point of interest of the textual content as a result of the measure of uncertainty within the wisdom of plant dynamics. elements of the textual content are dedicated to layout tools that suppose just a very constrained wisdom concerning the plant. different elements aspect tools that depend on wisdom of the dominant plant constitution. those equipment are extra plant particular, yet permit the advance of performance.

Adaptive regulate of solar power Collector Systems demonstrates the dynamics of sun fields to be wealthy sufficient to give a problem to the keep an eye on fashion designer whereas, even as, easy sufficient to permit analytic paintings to be performed, supplying case stories on dynamics and nonlinear regulate layout in an easy and revealing, yet nontrivial way.

The keep an eye on techniques handled during this monograph might be generalized to use to different crops modelled via hyperbolic partial differential equations, in particular technique vegetation within which delivery phenomena happen, crops like dryers, steam super-heaters or even street traffic.

An vital instance, used again and again through the textual content, is a distributed-collector sunlight box put in at Plataforma sunlight de Almeria, positioned in southern Spain. The keep watch over algorithms specified by the textual content are illustrated with experimental effects generated from this plant.

Although the first concentration of this monograph is solar power collector, the variety of different structures that can enjoy the tools defined will make it of curiosity to manage engineers operating in lots of industries in addition to to educational keep watch over researchers drawn to adaptive keep an eye on and its applications.

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Additional resources for Adaptive Control of Solar Energy Collector Systems

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This discussion leads us to the following conclusions concerning distributed collector solar fields: • For a controller to be effective over a wide range of reference values it must take into account plant nonlinearity and compensate it; • Adaptive controllers relying on linear control laws can compensate nonlinear effects only up to some extent. These controllers are able to adapt to the working point and yield a good response for small changes of the reference around it, but the performance degrades when the aim is to track large and fast reference changes.

1999; Flores et al. 2005; Pereira and Dourado 2002) and control based on neural network models (Arahal et al. 1998). A major advance is provided by Silva et al. (2003a, b), in which a time varying sampling interval is used. This approach, to be discussed in detail in this book, implements a change in time scale that linearizes the plant, thereby allowing very high sudden changes in reference with a fast response and no overshoot. 5 Book Organization The book is organized as follows: This chapter introduces distributed collector solar fields in the context of plants that exploit solar thermal energy.

Control Eng Pract 6:333–344 Barão M, Lemos JM, Silva RN (2002) Reduced complexity adaptive nonlinear control of a distributed collector solar field. J Proc Control 12:131–141 Berenguel E, Camacho EF (1996) Frequency-based adaptive control of systems with antiresonance modes. Control Eng Pract 4(5):677–684 Berenguel M, Camacho EF (1995) Frequency based adaptive control of systems with antiressonance modes. Preprints of 5th IFAC symposium adaptive systems in control and signal processing. Budapest, Hungary, pp 195–200 Berenguel M, Camacho, EF, García-Martín FJ, Rubio FR (1999) Temperature control of a solar furnace.

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