Cited 0 time in webofscience Cited 0 time in scopus

Mitigating noise-induced tracking loss in PI controlled systems with saturating actuators

Title
Mitigating noise-induced tracking loss in PI controlled systems with saturating actuators
Authors
Shin, Yi RangEun, Yongsoon
DGIST Authors
Eun, Yongsoon
Issue Date
2019-07-11
Citation
2019 American Control Conference, ACC 2019, 1773-1778
Type
Conference
ISBN
9781538679265
ISSN
0743-1619
Abstract
This technical note addresses a problem of mitigating noise induced tracking loss in a closed-loop system with linear plant, PI controller, saturating actuator, and anti-windup. For such systems, it was recently discovered that with the presence of zero mean measurement noise the mean of the output process at steady-state exhibits a level of tracking error. This phenomenon was termed as 'Noise-Induced Tracking Error (NITE).' Low pass filtering the measurement noise may be a solution to mitigate NITE, however, adding a filter affects the stability and also the transient tracking performance. This paper proposes to use an observer as a filter to decouple filter dynamics and the system stability, avoid performance loss in transient tracking, and most importantly, eliminate the noise induced tracking error. To accomplish these, a standard is necessary for observer gain selection, which is provided based on Quasilinear Control Theory. Finally, proof of the separation principle for PI-controlled feedback system is derived and the region of stability that considers the actuator saturation nonlinearity is presented. © 2019 American Automatic Control Council.
URI
http://hdl.handle.net/20.500.11750/10874
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • Author Eun, Yongsoon DSC Lab(Dynamic Systems and Control Laboratory)
  • Research Interests Resilient control systems; Control systems with nonlinear sensors and actuators; Quasi-linear control systems; Intelligent transportation systems; Networked control systems
Files:
There are no files associated with this item.
Collection:
Department of Information and Communication EngineeringDSC Lab(Dynamic Systems and Control Laboratory)2. Conference Papers


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE