Robust Control of a Class of Nonlinear Systems in Presence of Uncertain Time-Varying Parameters Associated with Diagonal Terms via Output Feedback
In this paper, we propose a robust output feedback control method for nonlinear systems with uncertain time-varying parameters associated with diagonal terms and there are additional external disturbances. First, we provide a new practical guidance of obtaining a compact set which contains the allow...
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| Veröffentlicht in: | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Communications and Computer Sciences, 2021/01/01, Vol.E104.A(1), pp.263-274 |
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| container_title | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences |
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| creator | OH, Sang-Young CHOI, Ho-Lim |
| description | In this paper, we propose a robust output feedback control method for nonlinear systems with uncertain time-varying parameters associated with diagonal terms and there are additional external disturbances. First, we provide a new practical guidance of obtaining a compact set which contains the allowed time-varying parameters by utilizing a Lyapunov equation and matrix inequalities. Then, we show that all system states and observer errors of the controlled system remain bounded by the proposed controller. Moreover, we show that the ultimate bounds of some system states and observer errors can be made (arbitrarily) small by adjusting a gain-scaling factor depending on the system nonlinearity. With an application example, we illustrate the effectiveness of our control scheme over the existing one. |
| doi_str_mv | 10.1587/transfun.2020EAP1005 |
| format | Article |
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| ispartof | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2021/01/01, Vol.E104.A(1), pp.263-274 |
| issn | 0916-8508 1745-1337 |
| language | eng |
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| source | J-STAGE Free |
| subjects | Control methods Control systems diagonal terms Feedback control gain-scaling factor Nonlinear control Nonlinear systems Nonlinearity Output feedback Parameter uncertainty perturbed nonlinearity Robust control Scaling factors uncertain time-varying parameters |
| title | Robust Control of a Class of Nonlinear Systems in Presence of Uncertain Time-Varying Parameters Associated with Diagonal Terms via Output Feedback |
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