Generalized Extended State Observer Based Control for Systems With Mismatched Uncertainties

By Shihua Li, Jun Yang, Wen‐Hua Chen, Xisong Chen. IEEE transactions on industrial electronics (1982. Print), 2012

782 citations recorded by the source corpus.

The standard extended state observer based control (ESOBC) method is only applicable for a class of single-input-single-output essential-integral-chain systems with matched uncertainties. It is noticed that systems with nonintegral-chain form and mismatched uncertainties are more general and widely exist in practical engineering systems, where the standard ESOBC method is no longer available. To this end, it is imperative to explore new ESOBC approach for these systems to extend its applicability. By appropriately choosing a disturbance compensation gain, a generalized ESOBC (GESOBC) method is proposed for nonintegral-chain systems subject to mismatched uncertainties without any coordinate transformations. The proposed method is able to extend to multi-input-multi-output systems with almost no modification. Both numerical and application design examples demonstrate the feasibility and efficacy of the proposed method.

Subfields: Control and Systems Engineering

View Paper: https://www.semanticscholar.org/paper/a77a336e1d6d37b1fb107bbb4ec8ef097a24f3df

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Control and Systems Engineering

1. Peng Shi
2. Jun Yang
3. Shihua Li
4. Jianyong Yao
5. Lixian Zhang
6. Zongxia Jiao
7. Xinghuo Yu
8. Ming Liu

Citations in the corpus

• Extended-State-Observer-Based Output Feedback Nonlinear Robust Control of Hydraulic Systems With Backstepping (2014, background): “Although ESO-based controllers can handle various uncertainties with few model information, the ESO is almost only available for integral-chain essential linear systems [33] and cannot be applied to hydraulic systems directly.”
• ADRC With Adaptive Extended State Observer and its Application to Air–Fuel Ratio Control in Gasoline Engines (2015, methodology): “Reference [27] discussed the design method for generalized ESO for nonintegral-chain systems subject to mismatched uncertainties.”
• Fault-Tolerant Sliding-Mode-Observer Synthesis of Markovian Jump Systems Using Quantized Measurements (2015, background): “In such cases, state estimation via an observer is thus of a realistic significance, which has been the subject of extensive research in signal processing domain over the past several decades [2], [12].”
• Sliding Mode Control for Mismatched Uncertain Systems Using an Extended Disturbance Observer (2014, positive): “However, recently, several interesting results using the disturbance observer approach for mismatched nonlinear systems [17], for mismatched nonlinear multi-input multi-output systems [18], for generalized Extended State Observer based control [19] and for MAGLEV suspension [20], have been reported ”
• Sliding-Mode Control for Systems With Mismatched Uncertainties via a Disturbance Observer (2013, background): “For example, in the MAGLEV suspension system, the track input disturbance acts on different channel from the control input [7]–[9].”