| Summary: | 碩士 === 大同工學院 === 電機工程研究所 === 81 === This thesis is to provide the "feedback-feedforward
adaptive controller" with pole-zero placement for adaptive
systems subject to saturation constraints such that the
type-I unstable plants can be tackled well, not necessarily
for stable plants. The first part of this thesis introduces
the "feedback-feedforward adaptive controller" which allows
arbitrary poles and zeros assignment in the resulting closed
-loop system without knowing the z-transform of the reference
signal for not necessarily minimum phase and/or stable plants.
Moreover, the restrictions that the zeros of the reference
model must contain the unstable zeros of the plant to be
controlled can be relaxed. Next, we consider a class of
type-I plants and the "feedback-feedforward adaptive
controller" which is constrained by a saturation non-linearty.
Based on the theory of optimal control, the concept of
functional analysis, and the technique of parameter
estimation, the conditions of the robust stability of the
overall adaptive control systems with saturation constraints
will be derived; furthermore, the poles and zeros of the
system can be adeguately assigned by the proposed design
algorithm. Finally, some simulations are provided to illustrate
the performance of the suggested adaptive control algorithm.
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