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Control of an electro‐mechanical valve actuator for a camless engine
Author(s) -
Haskara İ.,
Kokotovic V. V.,
Mianzo L. A.
Publication year - 2004
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.903
Subject(s) - valve actuator , actuator , valve timing , flexibility (engineering) , solenoid , engineering , rotary actuator , control theory (sociology) , pneumatic actuator , mechanical valve , solenoid valve , electrohydraulic servo valve , control engineering , computer science , mechanical engineering , automotive engineering , control (management) , electrical engineering , internal combustion engine , artificial intelligence , mathematics , medicine , statistics
In an electro‐mechanical valve actuated engine, the valves are driven by solenoid‐type actuators and cam‐shaft is eliminated. Individual control of each valve provides flexibility in valve timings over all engine conditions and fully exploits the benefits of variable valve timing. This paper pertains to the closed‐loop control of an electro‐mechanical valve actuator. The primary emphasis is on the soft‐seating problem, in which the valve and the moving actuator parts need to be brought to a soft‐stop at the end of their travels. The actuator control features which provide reliable valve motion are discussed in detail. Several illustrative experimental results are also presented. Copyright © 2004 John Wiley & Sons, Ltd.