Design of recursive linear time-variant filters with step characteristics variation

• Main Authors: Chen Chih Faung, 陳志芳
• Other Authors: Leou Tzong Yeu
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/95360778966264755163

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.