TY - CHAP

T1 - Discrete Lyapunov Controllers for an Actuator in Camless Engines

AU - Mercorelli, Paolo

AU - Werner, Nils

PY - 2014

Y1 - 2014

N2 - This paper deals with a hybrid actuator composed by a piezo and a hydraulic part controlled using two cascade Lyapunov controllers 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 with the above mentioned nonlinearities is considered together with cascade controllers which are Lyapunov based. The sampled control laws are derived using the well known Backward Euler method. An analysis of the Backward and Forward Euler method is also presented. In particular, the hysteresis effect is considered and a model with a switching function is used also for the controller design. Simulations with real data are shown.

AB - This paper deals with a hybrid actuator composed by a piezo and a hydraulic part controlled using two cascade Lyapunov controllers 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 with the above mentioned nonlinearities is considered together with cascade controllers which are Lyapunov based. The sampled control laws are derived using the well known Backward Euler method. An analysis of the Backward and Forward Euler method is also presented. In particular, the hysteresis effect is considered and a model with a switching function is used also for the controller design. Simulations with real data are shown.

KW - Engineering

UR - http://www.inase.org/library/2014/interlaken/bypaper/CSC/CSC-01.pdf

M3 - Article in conference proceedings

SN - 978-1-61804-216-3

T3 - Recent Advances in Electrical Engineering Series - 31

SP - 19

EP - 24

BT - Recent advances in circuits, systems and control

A2 - Garcia-Planas, Maria Isabel

A2 - Vachtsevanos, George

A2 - Xu, Gen Qi

PB - Europment

T2 - International Conference on Circuits, Systems and Control - CSC 2014

Y2 - 22 February 2013 through 24 February 2014

ER -