PROJECT TITLE :
Energy-Based Key-On Control of a Double Magnet Electromechanical Valve Actuator
The aim of this paper is to design, analyze, and validate via experiments the control of a double magnet electromechanical valve actuator (EMVA). Such actuators have shown to be a promising answer to actuate engine valves throughout traditional engine cycle. Their use will increase engine power, scale back fuel consumption and pollutant emissions, and improve significantly engine efficiency. To the current aim, this actuator wants to be properly controlled at the engine startup for the primary valve raise (key-on management). Mathematically, the EMVA system can be described as a highly nonlinear piecewise-sleek mechanical oscillator. The proposed management law relies on an energy management approach. Bifurcation analysis of the closed-loop system is disbursed to characterize the nonlinear dynamics of the valve and to tune the controller. The numerical and theoretical analysis is in sensible agreement with the experimental results.
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