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Disturbance Observer-Based Control: Methods and Applications by Shihua Li, Jun Yang, Wen-Hua Chen, Xisong Chen

By Shihua Li, Jun Yang, Wen-Hua Chen, Xisong Chen

As a result of its talents to compensate disturbances and uncertainties, disturbance observer dependent keep watch over (DOBC) is thought of as some of the most promising techniques for disturbance-attenuation. one of many first books on DOBC, Disturbance Observer dependent keep watch over: equipment and purposes provides novel idea effects in addition to top practices for purposes in movement and approach keep watch over that experience already benefited a number of organizations.

Supplying authoritative information within the parts of disturbance estimation and repayment for useful engineering structures, the e-book comprises assurance of theoretic tools and sensible functions of disturbance estimation and repayment for regulate platforms via a DOBC technique. It considers functions in flight keep watch over structures, movement keep watch over platforms, and strategy keep watch over systems.

- provides an authoritative review of disturbance observer established keep an eye on approaches
- studies on fresh advancements in disturbance estimation techniques
- Considers matched and mismatched disturbance/uncertainty attenuation for DOBC
- Illustrates purposes of the tools coated with exact engineering case studies

Filled with helpful insights accumulated over many years of analysis via the authors, this publication presents time- and stress-saving counsel for somebody drawn to the idea and technique examine of DOBC. utilizing general engineering examples, the textual content offers readers with an knowing of contemporary advancements in DOBC in addition to the instruments required to utilize this promising method of disturbance-attenuation

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Extra resources for Disturbance Observer-Based Control: Methods and Applications

Example text

First, in most existing results, it has been reported via plenty of experimental or application results that the DOBC approach could achieve very excellent dynamic and static performances in the presence of model uncertainties. However, it should be pointed out that DOBC is still a model-based control approach, and for a designed DOBC, it is hard to achieve fine control performance in the presence of severe model uncertainties. Actually, for a tuned DOBC, it can be verified by simulation studies that the control performance even the stability of closed-loop system is hard to be guaranteed if there exist enough large model uncertainties.

The disturbances that enter the system through different channels from those of the control inputs) are more general cases (as compared with matched disturbances and uncertainties) and widely exist in practical applications. Taking an aircraft as an example, the lumped Saunder 22 January 22, 2014 10:43 K15053˙Book Disturbance Observer-Based Control: Methods and Applications disturbance torques caused by unmodeled dynamics, external winds, and parameter perturbations may affect aircraft dynamics in a rather complicated way, which do not necessarily satisfy the so-called matching condition [40, 13].

10) 0 where k1 and k0 are the proportional and integral coefficients to be designed, respectively. 3. 2), yields t e˙y = −(a + k1 )e y − k0 e y (τ )d τ − d . 11) gives e¨y + (a + k1 )e˙y + k0 e y + d˙ = 0. 1) under the integral control. Saunder 10 January 22, 2014 10:43 K15053˙Book Disturbance Observer-Based Control: Methods and Applications where A= 0 −k0 1 , −(a + k1 ) b= 0 . , A is a Hurwitz matrix) so as to achieve asymptotical stability of the closed-loop system. 13) that e (∞) = 0 or equivalently e y (∞) = e˙y (∞) = 0.

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