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引用
期刊论文
STABILIZATION OF WAVE SYSTEMS WITH INPUT DELAY IN THE BOUNDARY CONTROL∗
October 2006, Vol. 12, 770-785,-0001,():
In the present paper, we consider a wave system that is fixed at one end and a boundary control input possessing a partial time delay of weight (1-μ) is applied over the other end. Using a simple boundary velocity feedback law, we show that the closed loop system generates a C0 group of linear operators. After a spectral analysis, we show that the closed loop system is a Riesz one, that is, there is a sequence of eigenvectors and generalized eigenvectors that forms a Riesz basis for the state Hilbert space. Furthermore, we show that when the weight μ>1 2, for any time delay, we can choose a suitable feedback gain so that the closed loop system is exponentially stable. When μ=1 2, we show that the system is at most asymptotically stable. When μ<1 2, the system is always unstable.
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