Zusammenfassung: | |
This chapter provides a practical strategy to realize accurate and robust control for 6 DOFs (degrees of freedom) parallel robots. The presented approach consists in two parts. The first basic part is based on the the compensation of the desired dynamics in combination with controller/observer for the single actuators. The passivity formalism offers an excellent framework to design and to tune the closed-loop dynamics, such that the desired behavior is obtained. The basic algorithm is proved to be locally robust towards uncertainties. The second part of the control strategy consists in a sliding mode controller. To keep the practical and computational efficient implementation, the proposed switching control considers explicitly only the friction model. Here we opt for the so called model-decomposition paradigm and we use additional integral action to improve robustness. The proposed approach is substantiated with experimental results demonstrating the effectiveness and success of the strategy that keeps control setup simple and intuitive.
|
|
Lizenzbestimmungen: | CC BY-NC-SA 3.0 Unported - https://creativecommons.org/licenses/by-nc-sa/3.0/ |
Publikationstyp: | BookPart |
Publikationsstatus: | publishedVersion |
Erstveröffentlichung: | 2010 |
Schlagwörter (englisch): | Control engineering, Parallel manipulator, Actuator, Passivity, Robust control, Formalism (philosophy), Computer science, Control theory, Observer (quantum physics), Control theory, Robustness (computer science) |
Fachliche Zuordnung (DDC): | 620 | Ingenieurwissenschaften und Maschinenbau |
Anzeige der Dokumente mit ähnlichem Titel, Autor, Urheber und Thema.