Title :
A magnetic flux-based position sensor for control of an electromechanical VVT actuator
Author :
Chladny, Ryan R. ; Koch, Charles R.
Author_Institution :
Dept. of Mech. Eng., Alberta Univ., Edmonton, Alta.
Abstract :
A promising method for enhancing automotive internal combustion engine efficiency uses solenoid actuators to directly control gas exchange valves. Mitigation of valve seating velocities is challenging due to phenomena such as magnetic saturation and pressure disturbances. Production implementation of an electromagnetic valvetrain will require the development of cost effective yet accurate sensors for robust feedback control. A method of magnetic flux-based armature position measurement is presented. An overview of the modeling and control design is shown with experimental and simulated results using such a sensor configuration
Keywords :
control system synthesis; feedback; internal combustion engines; magnetic flux; position control; position measurement; robust control; valves; armature position measurement; automotive internal combustion engine; control design; electromagnetic valvetrain; electromechanical VVT actuator control; gas exchange valves; magnetic flux; magnetic saturation; position sensor; pressure disturbances; robust feedback control; solenoid actuators; valve seating velocity; Actuators; Automotive engineering; Electromechanical sensors; Internal combustion engines; Magnetic sensors; Production; Saturation magnetization; Sensor phenomena and characterization; Solenoids; Valves;
Conference_Titel :
American Control Conference, 2006
Conference_Location :
Minneapolis, MN
Print_ISBN :
1-4244-0209-3
Electronic_ISBN :
1-4244-0209-3
DOI :
10.1109/ACC.2006.1657340
