A robust cascade sliding mode control for a hybrid piezo-hydraulic actuator in camless internal combustion engines

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This paper deals with a hybrid actuator composed by a piezo and a hydraulic part and with a cascade sliding mode control structure for camless engine motor applications. The idea is to use the advantages of both, the high precision of the piezo and the force of the hydraulic part. In fact, piezoelectric actuators (PEAs) are commonly used for precision positionings, despite PEAs present nonlinearities, such as hysteresis, saturations, and creep. In the control problem such nonlinearities must be taken into account. In this paper the Preisach dynamic model of the piezo actuator with the above mentioned nonlinearities is considered. The control structure consists of two feedforward controllers and two cascade sliding mode ones. The robustness of the proposed scheme consists of the fact that the sliding control structure is independent of the dynamic model of the controlled system. Simulations with real data are shown.

Original languageEnglish
Title of host publicationROCOND'12 - 7th IFAC Symposium on Robust Control Design
Editors Jan Dimon Bendtsen
Number of pages6
PublisherInternational Federation of Automatic Control
Publication date2012
EditionPART 1
Pages790-795
ISBN (print)9783902823038
ISBN (electronic)978-3-902823-03-8
DOIs
Publication statusPublished - 2012
Event7th IFAC Symposium on Robust Control Desing - ROCOND 2012 - Aalborg, Denmark
Duration: 20.06.201222.06.2012
Conference number: 7
http://www.proceedings.com/15540.html

    Research areas

  • Engineering - Lyapunov's approach, Piezo actuators, Sliding mode controllers, Camless engine, Control problems, Control structure, Controlled system, Feed-forward controllers, High precision, Hybrid actuator, Motor applications, Piezo actuator, Preisach, Sliding control, Sliding mode controller, Sliding modes, Dynamic models, Hydraulic actuators, Internal combustion engines, Piezoelectric actuators, Robust control, Sliding mode control, Piezoelectric motors

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