Title :
A piezo servo hydraulic actuator for use in camless combustion engines and its control with MPC
Author :
Haus, Benedikt ; Mercorelli, Paolo ; Werner, Nils
Author_Institution :
Inst. of Product & Process Innovation, Leuphana Univ., Lueneburg, Germany
Abstract :
In this paper a model of a hybrid actuator is proposed. It consists of a piezo-mechanical structure (including a hydraulic transmission ratio) and a hydraulic aggregate. Moreover, a cascade control strategy based on Model Predictive Control (MPC) is proposed to track periodic valve trajectory signals. The proposed cascade control structure consists of an internal and an external controller. The secondary, internal controller is needed to accomplish a Soft Landing. The MPCs are combined with two feed forward control actions, one for each part of the model. Simulation results carried out the suitability of the control approach.
Keywords :
cascade control; engines; hydraulic actuators; hydraulic systems; machine control; predictive control; servomechanisms; trajectory control; MPC; camless combustion engines; cascade control; hybrid actuator; hydraulic aggregate; model predictive control; periodic valve trajectory signals; piezo servo hydraulic actuator; piezo-mechanical structure; soft landing; Actuators; Engines; Mathematical model; Pistons; Timing; Trajectory; Valves;
Conference_Titel :
Control, Decision and Information Technologies (CoDIT), 2014 International Conference on
Conference_Location :
Metz
DOI :
10.1109/CoDIT.2014.6996939
