Optimal Control of Greenhouse Cultivation

A reference on the development and state-of-the-art in optimal greenhouse control, this book focuses on model-based methods to achieve the best economic result. The authors discuss physical models of greenhouse climate and biological models of crop growth, as well as classical rule-based and multivariable feedback controllers. Key topics include state-space crop modeling, integrated optimal control, and controllers that exploit the weather to achieve the optimal trade-off between short term savings and optimal harvest yield. Each chapter includes open issues for future research.

Informationen zum Autor Gerrit van Straten, Gerard van Willigenburg, Eldert van Henten, Rachel van Ooteghem Klappentext Greenhouse control system manufacturers produce equipment and software with hundreds of settings and, while they hold training courses on how to adjust these settings, there is as yet no integrated instruction on when or why. Despite rapid growth in the greenhouse industry, growers are still faced with a multitude of variables and no unifying framework from which to choose the best option.Consolidating 30 years of research in greenhouse climate control, Optimal Control of Greenhouse Cultivation utilizes mathmatical models to incorporate the wealth of scientific knowledge into a feasible optimal control methodology for greenhouse crop cultivation. Discussing several different paradigms on greenhouse climate control, it integrates the current research into physical modeling of the greenhouse climate in response to heating, ventilation, and other control variables with the biological modeling of variables such as plant evapo-transpiration and growth. Key topics include state-space greenhouse and crop modeling needed for the design of integrated optimal controllers that exploit rather than mitigate outside weather conditions, especially sunlight, given widely different time scales. The book reviews classical rule-based and multivariable feedback controllers in comparison with the optimal hierarchical control paradigm. It considers real and hypothetical examples including lettuce, tomato, and solar greenhouses and examines experimental results of greenhouse climate control using optimal control software. The book concludes with a discussion of open issues as well as future perspectives and challenges. Providing a tool to automatically determine the most economical controls and settings for their operation, this much-needed book relieves growers of unnecessary control tasks, and allows them to achieve the best possible trade-off between short term savings and optimal harvest yield. Zusammenfassung A reference on the development and advances in optimal greenhouse control. It focuses on model-based methods to achieve the best economical result. It discusses physical models of greenhouse climate and biological models of crop growth, as well as classical rule-based and multivariable feedback controllers. Inhaltsverzeichnis Introduction and Problem Statement. Introduction to Optimal Control of Greenhouse Climate. Open Loop Optimal Control. Closed Loop Optimal Control. Greenhouse Cultivation Control Paradigms. A Seminal case: Lettuce. An Experimental Application: Tomato. An Advanced Application: The Solar Greenhouse. Developments, Open Issues, and Perspectives. ...

Autorentext
Gerrit van Straten, Gerard van Willigenburg, Eldert van Henten, Rachel van Ooteghem

Klappentext

Greenhouse control system manufacturers produce equipment and software with hundreds of settings and, while they hold training courses on how to adjust these settings, there is as yet no integrated instruction on when or why. Despite rapid growth in the greenhouse industry, growers are still faced with a multitude of variables and no unifying framework from which to choose the best option. Consolidating 30 years of research in greenhouse climate control, Optimal Control of Greenhouse Cultivation utilizes mathmatical models to incorporate the wealth of scientific knowledge into a feasible optimal control methodology for greenhouse crop cultivation. Discussing several different paradigms on greenhouse climate control, it integrates the current research into physical modeling of the greenhouse climate in response to heating, ventilation, and other control variables with the biological modeling of variables such as plant evapo-transpiration and growth. Key topics include state-space greenhouse and crop modeling needed for the design of integrated optimal controllers that exploit rather than mitigate outside weather conditions, especially sunlight, given widely different time scales. The book reviews classical rule-based and multivariable feedback controllers in comparison with the optimal hierarchical control paradigm. It considers real and hypothetical examples including lettuce, tomato, and solar greenhouses and examines experimental results of greenhouse climate control using optimal control software. The book concludes with a discussion of open issues as well as future perspectives and challenges. Providing a tool to automatically determine the most economical controls and settings for their operation, this much-needed book relieves growers of unnecessary control tasks, and allows them to achieve the best possible trade-off between short term savings and optimal harvest yield.

Zusammenfassung
A reference on the development and advances in optimal greenhouse control. It focuses on model-based methods to achieve the best economical result. It discusses physical models of greenhouse climate and biological models of crop growth, as well as classical rule-based and multivariable feedback controllers.

Inhalt

Introduction and Problem Statement. Introduction to Optimal Control of Greenhouse Climate. Open Loop Optimal Control. Closed Loop Optimal Control. Greenhouse Cultivation Control Paradigms. A Seminal case: Lettuce. An Experimental Application: Tomato. An Advanced Application: The Solar Greenhouse. Developments, Open Issues, and Perspectives.