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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Taha, A.F. Elmahdi, A. Panchal, J.H. Dengfeng Sun |
| Copyright Year | 2014 |
| Description | Author affiliation: Sch. of Aeronaut. & Astronaut., Purdue Univ., West Lafayette, IN, USA (Dengfeng Sun) || Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA (Taha, A.F.; Elmahdi, A.) || Sch. of Mech. Eng., Purdue Univ., West Lafayette, IN, USA (Panchal, J.H.) |
| Abstract | The insertion of communication networks in the feedback loops of control systems is a defining feature of modern control systems. These systems are often subject to unknown inputs in a form of disturbances, perturbations, or attacks. The objective of this paper is to analyze and design an observer for networked systems with unknown disturbances and inputs. The network effect can be viewed as either a perturbation or time-delay to the exchanged signals. In this paper, we focus on the time-delay representation of the network. First, we review an Unknown Input Observer (UIO) design for non-networked system from the UIO literature. Second, we derive the dynamics of the UlO-based NCS, also referred to as Networked Unknown Input Observer $(N_{et}UIO).$ Third, we design the $N_{et}UIO$ such that the effect of higher delay order terms are nullified, assuring that the effect of the unknown inputs on the plant state estimation is minimized. Fourth, we derive a bound on the maximum allowable time-delay for the $N_{et}UIO.$ Finally, a numerical example is shown to illustrate the usefulness of the proposed model. |
| Starting Page | 3278 |
| Ending Page | 3283 |
| File Size | 1250451 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781479938407 |
| DOI | 10.1109/SMC.2014.6974433 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-10-05 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Educational institutions Delays Observers Time-Delay Systems Networked Control Systems Unknown Input Observers NetUIO |
| Content Type | Text |
| Resource Type | Article |
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