EXPERIMENTAL CONTROL OF VARIABLE CAM TIMING ACTUATORS
نویسندگان
چکیده
منابع مشابه
Experimental Control of Variable Cam Timing Actuators
In this paper, we propose a control scheme for the position of Variable Cam Timing (VCT) actuators. We take into account the observation by (Genç et al., 2001) that these actuators feature a significant nonlinearity, but we use a different approach. We perform a model reduction of mechanics, pressure, flows and balance equations. It serves to design an observer used in a motion planning strateg...
متن کاملVariable Cam Timing: Consequences to Automotive Engine Control Design
Abstract: One objective of this paper is to illuminate fuel economy and emission improvement mechanisms of variable cam timing systems and analyze their effects on engine control system design. By retarding or advancing the cam phase one can vary the engine volumetric efficiency, as well as the amount of exhaust gas that dilutes the air charge. Combining these effects with intake manifold and e...
متن کاملNonlinear Predictive Control of Transients in Automotive Variable Cam Timing Engine Using Nonlinear Parametric Approximation
The paper considers design of a predictive Linear Time Varying model-based controller with nonlinear feedforward for regulation of transient processes caused by setpoint step changes in a nonlinear plant. An optimal feedforward control sequence is computed based on an empirical Finite Impulse Response model of the process. Though the control techniques developed in this paper are meant to have ...
متن کاملControl Oriented Model of a Dual Equal Variable Cam Timing Spark Ignition Engine
A control oriented engine model is developed to represent a spark ignited engine equipped with a variable cam timing mechanism over a wide range of operating con ditions Based upon laboratory measurements a continuous nonlinear low frequency phenomenological engine model is developed With respect to a xed cam timing engine the VCT mechanism alters the mass air ow into the cylinders the torque r...
متن کاملControl Oriented Modeling of the Gas Exchange Process in Variable Cam Timing Engines
Variable cam timing engines pose new questions for engine control system designers. The cam timing directly influences cylinder air charge and residual mass fraction. Three models that predict residual mass fraction are investigated for a turbocharged dual independent Variable Cam Timing (VCT) engine. The three models (Fox et. al. 1993, Ponti et. al. 2002, and Mladek et. al. 2000) that all have...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IFAC Proceedings Volumes
سال: 2007
ISSN: 1474-6670
DOI: 10.3182/20070820-3-us-2918.00015