| Summary: | 碩士 === 國立臺灣科技大學 === 電子工程學系 === 84 === This thesis has developed several useful method to improve the
system transient characteristics of infinite impulse response
filters with step characteristics variation. Utilizing the
observability property and linear projection method, we have
developed a technique to select an appropriate initial state at
the switching instant which is a simple procedure for reducing
the system transient. By replacing the system with a state
enlarged variable-order time-variant system in the transient
region, we can significantly reduce the transient components in
the system output. To employ the spectral factorization
technique, we can produce suboptimal realizations of lower
order. If the filter is realized with special filter structure,
suitable techniques have also been developed. Examples have
been demonstrated with difference equation filter structures.
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