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First, it is well-known that the observer matching condition (OMC) ought to be met for most traditional FE methods, which is actually difficult to satisfy for many systems. In order to overcome this limitation, a suitable variable is designed and the intermediate observer is proposed to estimate the actuator and sensor faults for neutral-type systems simultaneously. Second, based on linear matrix inequalities, sufficient conditions are derived, which guarantee the existence of the intermediate observer. An augmented descriptor system is constructed for the neutral-type systems. By the Lyapunov stability theory, states of error systems are ultimately bounded. Finally, two examples demonstrate the effectiveness and practicability of the designed strategy.<\/jats:p>","DOI":"10.1177\/01423312211058561","type":"journal-article","created":{"date-parts":[[2021,12,3]],"date-time":"2021-12-03T04:14:08Z","timestamp":1638504848000},"page":"1505-1517","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":12,"title":["Simultaneous actuator and sensor fault estimation for neutral-type systems via intermediate observer"],"prefix":"10.1177","volume":"44","author":[{"given":"Yuheng","family":"Wei","sequence":"first","affiliation":[{"name":"School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4404-780X","authenticated-orcid":false,"given":"Dongbing","family":"Tong","sequence":"additional","affiliation":[{"name":"School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiaoyu","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Mathematics, Physics and Statistics, Shanghai University of Engineering Science, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuqing","family":"Sun","sequence":"additional","affiliation":[{"name":"School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wuneng","family":"Zhou","sequence":"additional","affiliation":[{"name":"College of Information Sciences and Technology, Donghua University, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2021,12,3]]},"reference":[{"key":"bibr1-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/81.739268"},{"key":"bibr2-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1016\/j.automatica.2010.06.004"},{"key":"bibr3-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1016\/j.automatica.2015.12.028"},{"key":"bibr4-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1007\/s00034-018-1004-4"},{"key":"bibr5-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1016\/j.neucom.2016.08.043"},{"key":"bibr6-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1177\/0142331219827346"},{"key":"bibr7-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TFUZZ.2014.2298053"},{"key":"bibr8-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1007\/s11071-018-4666-3"},{"key":"bibr9-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1093\/imamci\/dnp008"},{"key":"bibr10-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1177\/0142331219856198"},{"key":"bibr11-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1016\/j.jfranklin.2005.04.007"},{"key":"bibr12-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TAC.2006.878732"},{"key":"bibr13-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1016\/j.automatica.2009.10.040"},{"key":"bibr14-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1016\/j.automatica.2015.01.042"},{"key":"bibr15-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TEMC.2006.888183"},{"key":"bibr16-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TAC.2012.2195930"},{"key":"bibr17-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1177\/0142331217707366"},{"key":"bibr18-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TSMC.2018.2828123"},{"key":"bibr19-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TCYB.2018.2820001"},{"key":"bibr20-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TCSII.2019.2907706"},{"key":"bibr21-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TFUZZ.2012.2209432"},{"key":"bibr22-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TFUZZ.2012.2224872"},{"key":"bibr23-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TCSI.2011.2157734"},{"issue":"1","key":"bibr24-01423312211058561","first-page":"142","volume":"46","author":"Liu X","year":"2020","journal-title":"Acta Automatica Sinica"},{"key":"bibr25-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1007\/s11063-021-10575-x"},{"key":"bibr26-01423312211058561","doi-asserted-by":"publisher","DOI":"10.1109\/TSMCB.2012.2199751"},{"issue":"6","key":"bibr27-01423312211058561","first-page":"3477","volume":"51","author":"Long Y","year":"2021","journal-title":"IEEE Trans. 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