NDLI: Output observer based feedback for soft landing of electromechanical camless valvetrain actuator

Content Provider	IEEE Xplore Digital Library
Author	Peterson, K. Stefanopoulou, A. Megli, T. Haghgooie, M.
Copyright Year	2002
Description	Author affiliation: Dept. Mech. Eng., Michigan Univ., Ann Arbor, MI, USA (Peterson, K.; Stefanopoulou, A.)
Abstract	Electromechanical valvetrain (EMV) actuators can replace the camshaft allowing for electronically controlled variable valve timing (VVT) on a new generation of engines. Before EMV actuators can be used in production vehicles two critical problems need to be resolved. First, impact velocities between the valve, valve seat, and the actuator itself need to be small to avoid excessive wear on the system and ensure acceptable levels of noise. Second, the opening and closing of the valve needs to be both fast and consistent to avoid collision with the piston and to reduce variability in trapped mass. This paper presents an observer based output feedback controller designed to achieve these goals. Theoretical analysis and experimental results of the controller are provided. The experimental results show a factor of six reduction in impact velocity and consistent and quick valve timing.
Sponsorship	American Autom. Control Council IFAC SICE
Starting Page	1413
Ending Page	1418
File Size	574990
Page Count	6
File Format	PDF
ISBN	0780372980
ISSN	07431619
DOI	10.1109/ACC.2002.1023219
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-05-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Output feedback Actuators Valves Timing Camshafts Electric variables control Engines Production Vehicles Noise level
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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