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|Title:||Fault estimation sliding-mode observer with digital communication constraints|
|Citation:||IEEE Transactions on Automatic Control, 2018; 63(10):3434-3441|
|Ming Liu, Lixian Zhang, Peng Shi and Yuxin Zhao|
|Abstract:||This paper addresses the actuator fault estimation sliding-mode observer (SMO) design problem of linear continuous-time systems over digital communication channels. This problem frequently occurred in a network environment where data has to be quantized before being transmitted via digital communication channels. Traditional observers (linear Luenberger observer, Walcott-ZaK SMO) are not effective to solve this design issue since the effects of signal quantization will degrade estimation performances evidently. In this paper, a new descriptor SMO method is presented to overcome this difficult problem. It is shown that, if the quantizer density is larger than √2-1, the designed observer can compensate quantization errors completely, and the fault vector can be reconstructed despite of signal quantization. Finally, a simulation example with the F-404 aircraft engine model is proposed to demonstrate the effectiveness of the proposed robust digital observer design approach.|
|Keywords:||Digital communication channel; sliding-mode observer (SMO); state estimation|
|Rights:||© 2018 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.|
|Appears in Collections:||Aurora harvest 3|
Electrical and Electronic Engineering publications
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