Improving Disturbance-Rejection Performance Based on an Equivalent-Input-Disturbance Approach

By Jinhua She, Mingxing Fang, Y. Ohyama, H. Hashimoto, Min Wu. IEEE transactions on industrial electronics (1982. Print), 2008

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Generalized Extended State Observer Based Control for Systems With Mismatched Uncertainties (2012, background): “2182011 the perturbation observer [7], [8], the equivalent input disturbance (EID) based estimation [9], [10], and the extended state observer (ESO) [11]–[15].”
Disturbance-Observer-Based Control and Related Methods—An Overview (2016, methodology): “The disturbance/uncertainty attenuation ability of the EID approach has been analyzed in [12].”
Nonlinear-Disturbance-Observer-Based Robust Flight Control for Airbreathing Hypersonic Vehicles (2013, methodology): “In [31], [37], [38] mismatched disturbance attenuation approaches are proposed for linear systems.”
From PID to Active Disturbance Rejection Control (2009, background): “Such need is unmistakable in the recently proposed terminologies such as equivalent input disturbance [14] and disturbance input decoupling [15], all of which can be seen as a special case of ADRC where only the external disturbance was considered.”
Disturbance/Uncertainty Estimation and Attenuation Techniques in PMSM Drives—A Survey (2017, background): “A number of DUEA techniques have been proposed since 1960s based on different disturbance/uncertainty estimators, including DOBC [47], extended state observer-based control (ESOBC, also called ADRC) [48], unknown input observerbased control (UIOBC) [49], generalized proportional integral observer-ba”