2次遅れ系の特性をもつ計測器の適応応答補償 : 圧力測定系を例にした応答特性の解析と応答補償(流体工学,流体機械)

概要

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This study deals with adaptive response compensation of a second-order system, focusing on a pressure measurement system as a typical example of the second-order system. First, response characteristics of a pressure measurement system were investigated theoretically using three representative mathematical models so far proposed. Although each mathematical model has its own target, the geometric configuration of a pressure measurement system, it is found that there exists a geometric condition in which the frequency response predicted by each model agrees well with one another. Second, where the response of the pressure measurement system can be approximated by the second-order system, the geometric configurations were specified. Finally, the response delay of the pressure measurement system was compensated using the idea of the two-thermocouple probe technique proposed by Tagawa-Ohta (1997). As a result, the governing parameters of the response characteristics of the pressure measurement system were estimated successfully. The results show that the present technique can be generally applicable to the response compensation of various sensors and measurement systems whose response can be represented by the second-order system.
2010-02-25