Improved Routh Table Truncation Algorithm for Large Scale Uncertain Discrete Interval Models
Abstract
Order reduction of complex uncertain discrete interval time system is considered. The novelty of algorithm is that coefficient of known higher order model are within given uncertain pattern and coefficient of reduced model are also derived in intervals, such that step response and frequency response envelope of original and derived reduced model are optimally close to each other. The developed algorithm ensured the stability aspect of reduced system if higher order uncertain system is stable. A numerical example is included to illustrate the proposed algorithm along with the comparison with existing techniquesReferences
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