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A guaranteed cost control method for nonlinear systems with time-delay is introduced in this paper, which can be represented by Takagi-Sugeno (T-S) fuzzy models with time-delays. The state feedback approach is considered. By introducing a new Lyapunov-Krasovskii functional with adjustable parameters, and based on delay-dependent stability analysis, some sufficient conditions for the existence of state...
This paper proposes a design method of discrete-time reset control systems with the reset time instants prespecified. With a base linear system designed conventionally, the discrete-time reset law design aims at improving the system transient responses. The design method can guarantee the system stability and the solution of the controller is obtained by solving Riccati equations. The proposed reset...
This paper considers the problem of controlling a group of microrobots that can move at different speeds but that must all move in the same direction. To simplify this problem, the movement direction is made a periodic function of time. Although the resulting control policy is suboptimal for an infinite-horizon quadratic cost, a bound is provided on how suboptimal it is. This bound is extended to...
Zooming type adaptive quantizers have been introduced in the networked control literature as efficient coders for stabilizing open-loop unstable noise-free systems connected over noiseless channels with arbitrary initial conditions. Such quantizers can be regarded as a special class of the Goodman-Gersho adaptive quantizers. In this paper, we provide a stochastic stability result for such quantizers...
In this paper, we consider a decentralized control problem for suppressing the traffic jam phenomenon in traffic flow. To analyze the phenomenon, we use the so-called optimal velocity model. In the model, the optimal velocity function which is a nonlinear function of the headway of the preceding vehicle describes driver's characteristics. Without affecting the characteristics, all vehicles in traffic...
The implementation of an infinite horizon regulator which allows incorporation of both input and state constraints in a receding horizon feedback strategy is presented. This implementation guarantees nominal closed loop stability of the constrained regulator for both stable and unstable discrete linear systems with feasible constraints. Feasibility of the constraints can always be achieved for stable...
Modern Control theory and estimation techniques have been studied in connection with missile guidance, with results indicating vast improvements over conventional guidance methods such as proportional navigation. The kinematic efficiency attainable with modern control theory derived guidance laws suggest similar improvements may be achieved for the autopilot design. Guidance and control design which...
Precise definitions of well posedness and ill-posedness in the sense of Tikhanov and of Hadamard are presented for a general class of optimal control problems. Ill-posedness of "uncontrollable" systems is studied. The "regularization" method for optimal control problems is defined and it is shown that the "regularization" can not be applied to "uncontrollable"...
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