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Robust adaptive observers for uncertain systems corrupted by bounded disturbances have to overcome two main problems. They have to guarantee a bounded parameter estimation, because it is well known that an arbitrarily small disturbance might drift to infinity the parameter estimation error even if the state estimate error remains bounded, and they have to ensure a robust state and parameter estimation...
For an air-breathing hypersonic vehicle model subject to input constraints, this paper is concerned with the application of linear control theory to design its flight control system. In the framework of integral quadratic constraints (IQCs), the standard linear parameter-varying (LPV) control method is generalized to deal with the parametric, dynamic uncertainties and saturation nonlinearities associated...
In this paper, the robust design of the multi-loop PI controller for multivariable processes in the presence of the multiplicative input uncertainty is proposed. The paper deals with two major steps: as a first step, the analytical tuning rules of the multi-loop PI controller are derived from the basis of the generalized IMC-PID approach. Then, in the second step, the robust analysis is utilized for...
The line-of-sight (LOS) stabilization control based on gyro stabilized platform is required to isolate LOS from the movement and vibration of carrier and ensure pointing and tracking for target in electro-optical tracking system. In this paper, a fractional-order PI (FOPI) controller is applied in the design of stabilization loop of LOS stabilization system for the first time, based on the analysis...
This paper presents investigation into the development of decentralized sliding mode control with application to trajectory tracking for hydraulically driven revolute robot manipulators. The control of hydraulically actuated robot manipulator is very challenging due to the highly nonlinearities in its dynamics, uncertainties parameters, and variations on payload. To overcome these problems, an integrated...
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