Performance Enhancement for Systems With Disturbances and Measurement Noise by Modified Equivalent-Input-Disturbance Approach

This article presents a modified equivalent-input-disturbance (MEID) approach for enhancing the control performance of a system with disturbances and measurement noise. In this approach, the measured output of the system is filtered by a newly added low-pass filter to reduce the influence of the mea...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2024-11, Vol.71 (11), p.14516-14525
Main Authors: Mei, Qicheng, She, Jinhua, Long, Fei, Shen, Yanjun
Format: Article
Language:English
Subjects:
Control systems
Disturbance rejection
Disturbances
Equivalence
equivalent input disturbance (EID)
Low pass filters
Noise control
Noise measurement
Noise reduction
noise suppression
Observers
Performance enhancement
Permanent magnet motors
Permanent magnets
permanent-magnet synchronous motor (PMSM)
Phase lag
Synchronous motors
Transfer functions
Velocity control
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This article presents a modified equivalent-input-disturbance (MEID) approach for enhancing the control performance of a system with disturbances and measurement noise. In this approach, the measured output of the system is filtered by a newly added low-pass filter to reduce the influence of the measurement noise. Regarding the low-pass filter and the system as a new plant, an MEID estimator is devised for the new plant to estimate and compensate for disturbances. Since the newly added filter reduces the effect of measurement noise, an all-pass filter is designed in the MEID estimator instead of a low-pass filter in the conventional EID estimator to ensure causality. The all-pass filter causes a smaller phase lag between the estimated disturbance and the compensation signal than that caused by the low-pass filter. Thus, the MEID approach improves the disturbance-rejection performance compared to the conventional EID approach. Experimental results on a permanent-magnet synchronous motor confirm the validity and superiority of the MEID approach.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2024.3376789