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A novel robust feedback linearization scheme is proposed in this paper based on a modified robust exact differentiator. The states and drift terms in the system are estimated simultaneously by the observer using back injection of the control effort. The estimated drift term is used in the feedback loop to compensate the disturbances and observed states are used for feedback linearization. Finite time...
The paper describes the development of an automatic take-off system for helicopter. Design of automatic take-off control system is mandatory for manned as well as unmanned helicopter, which reduce the burden of pilot and increases the flying quality of the vehicle. In this paper, we present an It based automatic take-off system for helicopter. For this purpose, we consider typical four-bladed helicopter...
This paper addresses the control problem of extending the travel range of a MEMS electrostatic actuator through a closed-loop voltage control scheme. Since the electrostatic actuator is inherently unstable due to its pull-in limit, one of the major control goals is to stabilize the actuator system beyond the limit. In addition, the controller has to be robust against external disturbances and noise...
The Parseval Theorem together with the Lagrange multiplier method is proposed to design the infinite horizon input signal (auxiliary signal) for active failure detection such that its use enables us to detect the faults in a multiple-model framework. We consider the asymptotic behavior of the robust fault detection problem and its stationary optimal solutions for a linear uncertain system controlled...
Almost all dynamical systems experience inherent uncertainties such as environmental disturbance and sensor noise. This paper describes a new robust stochastic control methodology, which is capable of controlling the statistical nature of state variables of a nonlinear system to designed (attainable) statistical properties. First, an asymptotically stable and robust output tracking controller is designed...
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