{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,3,19]],"date-time":"2025-03-19T11:10:53Z","timestamp":1742382653210,"version":"3.38.0"},"reference-count":31,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2020,9,21]],"date-time":"2020-09-21T00:00:00Z","timestamp":1600646400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering"],"published-print":{"date-parts":[[2021,5]]},"abstract":"<jats:p> The control of twin rotor multi-input multi-output system is difficult as it is subjected to model uncertainties and external disturbances. Furthermore, there also exists a coupling between pitch and yaw positions, which makes the system more difficult to control them separately. Considering the above difficulties in twin rotor multi-input multi-output system control, [Formula: see text] robust controller is designed to handle the model uncertainties and external disturbances with two-degree-of-freedom. A mixed sensitivity approach is employed to represent the uncertainties and external disturbances arise in the twin rotor multi-input multi-output system. For performance analysis, first the proposed two-degree-of-freedom [Formula: see text] controller is compared with the \u2018Linear Quadratic Regulator-Linear Matrix Inequality\u2019\u2013based robust proportional\u2013integral\u2013derivative controller and Internal Model Control\u2013based proportional\u2013integral\u2013derivative controller in MATLAB\/Simulation and then in experimentation. From the obtained results, it is confirmed that the proposed controller exhibits enhanced robustness, faster tracking performance and accurate disturbance attenuation, when compared with Linear Quadratic Regulator-Linear Matrix Inequality\u2013based robust proportional\u2013integral\u2013derivative controller and Internal Model Control\u2013based proportional\u2013integral\u2013derivative controller in face of external disturbances and uncertainties. <\/jats:p>","DOI":"10.1177\/0959651820954969","type":"journal-article","created":{"date-parts":[[2020,9,22]],"date-time":"2020-09-22T06:43:37Z","timestamp":1600757017000},"page":"579-592","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Robust two-degree of freedom H\u221e control design for a twin rotor multi-input multi-output system with external disturbances and model uncertainties"],"prefix":"10.1177","volume":"235","author":[{"given":"Smruti Ranjan","family":"Jagadeb","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha India"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4383-6783","authenticated-orcid":false,"given":"Bidyadhar","family":"Subudhi","sequence":"additional","affiliation":[{"name":"School of Electrical Sciences, Indian Institute of Technology Goa, Ponda, India"}]},{"given":"Asim Kumar","family":"Naskar","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha 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