Differential Filters for the Identification of Dead Time
Yasuo Tachibana · Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University) · 2009
Abstract In this paper, a generation method is proposed that is used for the identification of the dead time of a transfer function which parameters are known without the dead time. The proposed filters compose a group of several order differential FIR type digital filters. For non negative integer max 0r ≥ , max(0)r r r ≤ ≤-th order differential filter is composed by cascade connection of r pieces of one order difference filter and maxr r − pieces of one order low pass filter and several order low pass filter. The amplitude values of them dividing with ()rjω are approximately same low pass characteristic. Moreover, these filters have ideal phase characteristics with several interval of the dead time. Using this filter group, we can show that the identification of the dead time of a transfer function is available. In this paper, the numerical examples of the proposed filters are presented. 1.