This paper focuses on a new H1 controller design issue for networked control systems with external disturbance as well as random time delays and packet dropouts in forward and feedback channels, which are modeled by multiple Markov chains in a unified style. The output feedback controller is designed to stabilize the networked control system and also achieves the prescribed H1 disturbance atten...

This paper presents the adaptive control scheme with sliding mode compensator for vibration control problem in the presence of disturbance. The dynamic model of the flexible cantilever beam using finite element modeling is derived. The adaptive control with sliding mode compensator using output feedback for output tracking is developed to reject the external disturbance, and to improve the trac...

In this paper, a disturbance-observer-based composite anti-disturbance control method is proposed for landing of the carrier-based UAV subject to both external and internal disturbances. By virtue scheme, two nested loops are simultaneously designed. inner loop, disturbance observers employed estimate effect On other hand, in outer sliding mode (SMC) designed attenuate estimation error guarante...

This paper proposes the control of a doubly fed induction generator DFIG used in wind turbine energy conversion. The control strategy is based on the linear active disturbance rejection control ADRC to generate the control voltages of the rotor side converter RSC and the grid side converter GSC, due to the changes in control inputs. The ADRC, based on the extended state observer ESO, estimate a...

The selective sustainment of nonlinear systems to signals is of great significance to signal transduction in living systems. We take hormone signaling as an example, and investigate the sustainment of internal and external signals. Simulation results prove that signals with ‘‘intrinsic frequency”, no matter if it is noise induced or external injected, can be selectively sustained by exploiting ...

In this study a real-time open loop estimate of the disturbance displacement input to the tire and an external disturbance force, representing handling and aerodynamic forces, acting on the sprung mass of a quarter-car suspension test rig was generated. This information is intended for use in active control methods applied to vehicle suspensions. This estimate is achieved with two acceleration ...

The tiltrotor aircraft consists of three primary flight modes, which are helicopter mode in low forward speed flight, airplane high and conversion mode. This paper presents an active disturbance rejection controller for flight. First, a dynamics model is developed verified. Then, control laws, designed via the (ADRC) sliding (SMC) techniques, proposed with uncertainties external disturbance, es...

In this paper we study the response to external disturbances of a double integrator with saturating feedback. For a class of disturbances that have bounded integrals over all intervals, we show that a linear static feedback law can always be designed to ensure boundedness of the states. Moreover, boundedness can be preserved if the disturbance is biased by a small DC signal. In the special case...

A control strategy is described for globally stabilizing ANCBI linear plants subject to input constraints in the presence of persistent arbitrarily large but bounded disturbances. Unlike the disturbance-free case, the presence of persistent disturbances imposes critical structural conditions on the disturbance-to-state map of the system in order to achieve global internal asymptotic and global ...