Disturbance attenuation and rejection for systems with unknown nonlinearity and missing measurements via DOBC approach
MetadataShow full item record
© 2017 Technical Committee on Control Theory, CAA. The problem of disturbance attenuation and rejection for discrete systems with unknown nonlinear and missing measurement is studied in this paper. Here, two types of disturbance are considered. One of them is matched unknown disturbance generated by an exogenous systems, the other belongs to norm-bounded disturbance. The matched unknown disturbance is estimated by disturbance observer (DOB), and it is compensated by the composited controller. The norm-bounded disturbance is attenuation under the condition of H 8 constraint. The matched unknown disturbance and state are estimated separately based on missing measurement which is described by a binary switching sequence. The augmented systems, which consist of result closed-loop systems and error dynamic of disturbance are exponentially mean-square stable for zeros additional disturbance, and the systems also satisfy prescribed H 8 performance requirement. A sufficient condition is derived to find DOB gain matrix, controller gain matrix in terms of Lyapunov approach. A numerical example is given to show the effectiveness of proposed method.
Showing items related by title, author, creator and subject.
Power maximization of variable-speed variable-pitch wind turbines using passive adaptive neural fault tolerant controlHabibi, H.; Rahimi Nohooji, H.; Howard, Ian (2017)Power maximization has always been a practical consideration in wind turbines. The question of how to address optimal power capture, especially when the system dynamics are nonlinear and the actuators are subject to unknown ...
Continuous-time model predictive control of a permanent magnet synchronous motor drive with disturbance decouplingErrouissi, R.; Al-Durra, A.; Muyeen, S.M.; Leng, S. (2017)© The Institution of Engineering and Technology. The design and the experimental validation of a continuous-time model predictive control (CTMPC) for a permanent magnet synchronous motor (PMSM) drive with disturbance ...
A Robust Continuous-Time MPC of a DC–DC Boost Converter Interfaced With a Grid-Connected Photovoltaic SystemErrouissi, R.; Al-Durra, A.; Muyeen, S.M. (2016)The main function of the dc–dc converter in a grid-connected photovoltaic (PV) system is to regulate the terminal voltage of the PV arrays to ensure delivering the maximum power to the grid. The purpose of this paper is ...