PERIODIC SIGNAL MEASUREMENT DEVICE, PERIODIC SIGNAL MEASUREMENT METHOD, AND SAMPLING PERIOD DETERMINATION METHOD

PROBLEM TO BE SOLVED: To suppress a measurement error of a periodic signal while suppressing an increase in a processing load and costs.SOLUTION: A periodic signal measurement device comprises: a measurement part 1 for sampling a periodic signal S, and for obtaining a measurement value M by executin...

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Hauptverfasser: YAGI TOMOHIRO, NORIYASU HIROSHI, MOTOHASHI ISATO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To suppress a measurement error of a periodic signal while suppressing an increase in a processing load and costs.SOLUTION: A periodic signal measurement device comprises: a measurement part 1 for sampling a periodic signal S, and for obtaining a measurement value M by executing predetermined processing to a sampling value; a sampling period determination part 3 for determining a sampling period of the measurement part 1 such that a deflection amount of the measurement value M in a fixed measurement period falls within an allowable range; and a sampling period control part 4 for setting the sampling period of the measurement part 1 in accordance with the determination of the sampling period determination part 3.SELECTED DRAWING: Figure 7 【課題】処理負荷とコストの増加を抑えつつ、周期信号の測定誤差を抑える。【解決手段】周期信号測定装置は、周期信号Sをサンプリングし、サンプリング値に対して所定の処理を施すことにより測定値Mを得る測定部1と、一定の測定期間における測定値Mの振れ量が許容範囲内になるように測定部1のサンプリング周期を決定するサンプリング周期決定部3と、サンプリング周期決定部3の決定に応じて測定部1のサンプリング周期を設定するサンプリング周期制御部4とを備える。【選択図】 図7