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This paper is concerned with the stabilization problem of networked control systems where the main focus are the packet-loss, time delays and unmeasured system states. Here a state observer is designed for estimating the states and compensating for time delay and data dropout, then the whole closed system is modeled as asynchronous dynamical system constrained by configuration event rate. By using...
With the incertitude of the network-induced time-delay and data packet losses in networked control systems (NCS), the performance of control systems would degrade, even destabilize. In this paper, a new design of controller is presented, here the controller uses event and time driving, and state observer is designed for estimating the states and compensation for time delay and dropout. Then the closed...
In order to obtain good performance for inverters and to solve the problem of time delay in digital control, a novel dual-loop control based on state observer with repetitive compensation is proposed. Dual-loop control for PWM inverter can achieve fast dynamic response and inhibit nonlinear load disturbances while observer can solve the problem of duty-cycle regulation caused by sampling and computing...
The insertion of the communication network in the networked control systems can induce delay, which may degrade the performance of control systems and even destabilize the system. Firstly, some kinds of NCS random delay are analyzed in this paper. Since the time-delay between controller and actuator is not available, we use grey prediction method to get predictive value. Secondly, a kind of state...
In this article, we are concerned with the stabilization of a one-dimensional Schrödinger equation with boundary control and observation. The boundary observation is suffered from an arbitrary given time delay. We first show that the proportional output feedback control that stabilizes exponentially the time delay free system makes the corresponding time delay system unstable.We then use the observer...
Linear delay differential systems can be modeled as systems with coefficients in a suitable ring, so that several design problems can be solved using a geometric approach. To practically compute the solutions obtained for systems over a ring, Computational Algebra techniques must be used. The freely available software CoCoA is an efficient tool and easy to effectively implement the needed algorithms...
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