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In order to improve the reliability of the single area load frequency system, the problem of fault diagnosis of the single area load frequency control systems based on observer is studied. In this paper, the issues of fault detection and reconstruction for single area load frequency control systems with uncertainty and disturbance by designing adaptive sliding mode observer are considered. By constructing...
The advanced features of three-phase PWM voltage-source converter are not necessarily achieved under unbalanced input voltage conditions due to the generation of even-order harmonics at dc output and the odd-order harmonics in input currents. Both the 2nd harmonic voltage component onto the dc link and the negative sequence part of the input currents can disturb the performance of the attached inverter...
In this paper, we consider the tracking control problem under input constraints for robot manipulators which are affected by unmeasurable harmonic disturbances. A new control scheme is proposed for the problem, which composed of a parameter-dependent nonlinear observer and a tracking controller. The parameter-dependent nonlinear observer designed by the internal model principle, can achieve a estimation...
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