DocumentCode :
3173508
Title :
Investigation of time-varying internal model based control for camless engine valve actuation
Author :
Gillella, Pradeep ; Xingyong Song ; Zongxuan Sun
Author_Institution :
Mech. Eng. Dept., Univ. of Minnesota, Minneapolis, MN, USA
fYear :
2012
fDate :
10-13 Dec. 2012
Firstpage :
3741
Lastpage :
3746
Abstract :
This research focuses on the tracking control design for a camless engine valve actuator during engine speed transients. The cyclic but aperiodic valve reference signal to be tracked can be modeled using two different methods, i.e., as a combination of frequency varying sinusoids in the time domain or as a repetitive (periodic) signal in the rotational angle domain. The recently developed time-varying internal model based controller is ideally suited for both the approaches. Investigation of the continuous time and discrete domain implementations uncovers some unique characteristics resulting from the time-varying nature of the system which favor working in the discrete domain. A quantitative analysis comparing various performance metrics for the different approaches of modeling the reference signal helps highlight the relative advantages of each method. Finally, experimental results from a prototype camless engine valve actuation system help validate the overall effectiveness of the proposed approach.
Keywords :
actuators; control system synthesis; engines; time-varying systems; tracking; valves; camless engine valve actuation system; continuous time implementations; discrete domain implementations; engine speed transients; engine valve actuator; repetitive signal; time-varying internal model based controller; time-varying nature; tracking control design; Actuators; Engines; Real-time systems; Solid modeling; Time varying systems; Transient analysis; Valves;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Decision and Control (CDC), 2012 IEEE 51st Annual Conference on
Conference_Location :
Maui, HI
ISSN :
0743-1546
Print_ISBN :
978-1-4673-2065-8
Electronic_ISBN :
0743-1546
Type :
conf
DOI :
10.1109/CDC.2012.6426519
Filename :
6426519
Link To Document :
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