Title :
Effects of hysteresis compensation in feedback control systems
Author :
Cavallo, A. ; Natale, C. ; Pirozzi, S. ; Visone, C.
Author_Institution :
Dipt. di Ingegneria dell´´Informazione, Seconda Univ. degli Studi di Napoli, Aversa, Italy
fDate :
5/1/2003 12:00:00 AM
Abstract :
Analyzes the performances of closed-loop control systems when real hysteretic actuators (e.g., Terfenol-D-based devices) are of concern. Shown is a simple but effective strategy, based on the simple idea of pseudo-compensator, for transducer´s hysteresis compensation. Such a strategy improves the control system´s behavior, not only in terms of tracking error reduction but also in decreasing the control signal so as to avoid saturation and harmful stress to the actuator on the one hand and reducing hysteretic energy losses on the other. Experiments are performed on a magnetostrictive actuator used for a micropositioning task.
Keywords :
closed loop systems; compensation; electromagnetic actuators; feedback; magnetic hysteresis; magnetic leakage; magnetostrictive devices; Terfenol-D-based devices; closed-loop control systems; control signal; feedback control systems; hysteresis compensation; hysteretic actuators; hysteretic energy losses; magnetostrictive actuator; micropositioning; pseudo-compensator; saturation; tracking error reduction; Actuators; Control systems; Energy loss; Error correction; Feedback control; Hysteresis; Magnetostriction; Performance analysis; Saturation magnetization; Stress control;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.810912