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Performance degradation due to measurement noise in control systems with disturbance observers and saturating actuators

Title
Performance degradation due to measurement noise in control systems with disturbance observers and saturating actuators
Authors
Na, GyujinJo, Nam HoonEun, Yongsoon
DGIST Authors
Eun, Yongsoon
Issue Date
2019-05
Citation
Journal of the Franklin Institute, 356(7), 3922-3947
Type
Article
Article Type
Article
Keyword
Actuators; Adaptive control systems; Electric drives; Electric motors; Feedback control; Spurious signal noise; Uncertainty analysis; Actuator saturations; Design of control system; Disturbance observer; Exogenous disturbances; Experimental verification; Measurement Noise; Performance degradation; Saturating actuator; Brushless DC motors
ISSN
0016-0032
Abstract
Augmenting feedback control systems with disturbance observer (DOB) is a widely used technique in system design to compensate for the effect of exogenous disturbances as well as plant model uncertainties. In practice, actuator saturation should be taken into account in the design of control systems with DOB. In such cases, we have observed performance degradation due to zero mean measurement noise in the form of tracking loss. This phenomenon has never been reported in DOB literature. This paper reports the phenomenon, analyzes the conditions under which the tracking loss occurs, and also presents design guidelines to avoid the tracking loss. Experimental verification is also provided using a BLDC motor drive testbed. © 2019
URI
http://hdl.handle.net/20.500.11750/9874
DOI
10.1016/j.jfranklin.2019.03.001
Publisher
Elsevier Ltd
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)1. Journal Articles


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