Abstract
ABSTRACTThe paper is devoted to adaptive feedback stabilisation for discrete linear time-invariant plants with bounded disturbances and quantisation. The quantisation occurs due to the finite capacity of the discrete-time two-way communication channel. A simple adaptive controller based on the Yakubovich's recursive goal inequalities method is designed. The bound for the minimum channel capacity sufficient to stabilise any stabilisable system with unknown parameters is evaluated for any prespecified compact set of unknown parameters. It is shown that if the channel capacity exceeds the above bound then the upper bound for limit output error is proportional to the disturbance intensity and inversely proportional to the exponential of the channel capacity. The design and performance of the proposed algorithm are illustrated by an example.
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