Model Prediction Based Dual-Stage Actuator Control in Discrete-Time Domain

Autor:	Choong Woo Lee, Sang Min Suh
Rok vydání:	2011
Předmět:	Electric motor Computer science Voice coil Servomotor Motion control Signal Electronic Optical and Magnetic Materials Model predictive control Control theory Control system Transient response Electrical and Electronic Engineering Actuator Machine control
Zdroj:	IEEE Transactions on Magnetics. 47:1830-1836
ISSN:	1941-0069 0018-9464
DOI:	10.1109/tmag.2011.2132756
Popis:	This paper presents a voice coil motor (VCM) prediction based dual-stage actuator (DSA) control for fast seek and settling times. In the conventional control systems, VCM follows a reference signal, whereas a micro-actuator (MA) seeks a VCM position error signal (VPES) defined by an error between the reference signal and an estimated VCM position. In other words, VCM firstly seeks the reference signal and MA reduces the residual error (equivalently, VPES). In the conventional method, the calculated VPES was utilized in the next sampling period. But, the VPES is not the same as the VPES to be actually compensated because the VPES was calculated under the assumption that VCM doesn't move. And, the error made seek and settle times slow in transient responses. In order to reduce the error, this paper suggests a new control scheme on the basis of VCM model prediction. From the test results, it is verified that the seek and settling times are obviously improved. Moreover, it is shown that frequency responses are also advanced through a maximum peak criteria.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::810f0d7de8584782f81b952903a9e03d https://doi.org/10.1109/tmag.2011.2132756 Zobrazit plný text záznamu