Method for the control of electromagnetic actuators for the actuation of intake and exhaust valves in internal combustion engines

摘要

A method for the control of an electromagnetic actuator coupled to a respective valve and provided with a moving ferromagnetic member connected to at least one point of the valve, a pair of electromagnets disposed on opposite sides with respect to the moving ferromagnetic member and an elastic member adapted to maintain the valve in a rest position. The method comprises the stages of detecting an actual position and an actual velocity of the valve, determining a reference position and a reference velocity of the valve and minimising differences between the reference position and the actual position and between the reference velocity and the actual velocity of the valve by means of a feedback control action.