CALCULATION DEVICE OF ECCENTRICITY OF DETECTION ROTOR

• Main Author: SHIBATA SHINJI
• Format: Patent
• Language: English; Japanese
• Published: 20.02.2020
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

To provide a detection rotor eccentricity calculation device capable of further precisely calculating eccentricity of a detection rotor.SOLUTION: A calculation device of eccentricity of a detection rotor comprises a centering center detection sensor 30, a turntable 2 for rotating the centering center detection sensor 30, and a computing unit 72 for calculating the eccentricity of the detection rotor with respect to a rotary shaft. The centering center detection sensor 30 includes two X-direction detection sections disposed to face each other at 180°, and two Y-direction detection sections disposed with their phases respectively offset by 90° from the X-direction detection sections, and outputs a differential value between output signals of the two X-direction detection sections as an X-direction displacement and a differential value between output signals of the two Y-direction detection sections as a Y-direction displacement. When a divisor of the number of teeth of the detection rotor and a natural number equal to or more than 5 is defined as n, the computing unit 72 rotates the turntable by [360/n]° and calculates the eccentricity of the detection rotor on the basis of the X-direction displacement and the Y-direction displacement read out for every angle of [360/n]°.SELECTED DRAWING: Figure 3 【課題】検出ロータの偏心量をより正確に算出できる検出ロータの偏心量算出装置を提供する。【解決手段】検出ロータの偏心量算出装置は、芯出し中心検出センサ３０と、芯出し中心検出センサ３０を回転させる回転テーブル２と、検出ロータの回転軸部に対する偏心量を演算する演算器７２と、を備え、芯出し中心検出センサ３０は、１８０度対向配置された二つのＸ方向検出部と、Ｘ方向検出部に対して９０度位相をずらして配置された二つのＹ方向検出部と、を有し、二つのＸ方向検出部の出力信号の差分値をＸ方向変位として、二つのＹ方向検出部の出力信号の差分値をＹ方向変位として、出力し、演算器７２は、検出ロータの歯数の約数かつ５以上の自然数をｎとした場合、回転テーブルを［３６０／ｎ］°ずつ回転させて、［３６０／ｎ］°の角度ごとに読み出したＸ方向変位およびＹ方向変位に基づいて、検出ロータの偏心量を算出する。【選択図】図３