Abstract
This paper presents a fault-tolerant control (FTC) scheme for nonlinear systems which are connected in a networked control system. The nonlinear system is first transformed into two subsystems such that the unobservable part is affected by a fault and the observable part is unaffected. An observer is then designed which gives state estimates using a Luenberger observer and also estimates unknown parameter of the system; this helps in fault estimation. The FTC is applied in the presence of sampling due to the presence of a network in the loop. The controller gain is obtained using linear-quadratic regulator technique. The methodology is applied on a mechatronic system and the results show satisfactory performance.
| Original language | English |
|---|---|
| Pages (from-to) | 1707-1715 |
| Number of pages | 9 |
| Journal | International Journal of Control |
| Volume | 87 |
| Issue number | 8 |
| DOIs | |
| State | Published - 3 Aug 2014 |
Bibliographical note
Funding Information:The authors would like to thank the guest editor and reviewers for their valuable comments and suggestions which have helped improve the presentation of the paper. This work was partially supported by the National Natural Science Foundation of China under Grants 60874051, 60804011 and 61958001, and the Engineering and Physical Sciences Research Council, UK under Grant EP/F029195.
Keywords
- LQR design
- Luenberger observer
- fault-tolerant control
- mechatronic system
- networked control systems
ASJC Scopus subject areas
- Control and Systems Engineering
- Computer Science Applications