METHOD FOR CORRECTING TORQUE SENSOR ZERO-POINT ERROR

• Main Author: HOJO KATSUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 08.12.2016
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide a method for correcting a torque sensor zero-point error with which it is possible to improve the accuracy of torque measurement even when the relative positional relation of a torque sensor and an evaluation facility changes and center runout or face runout occurs.SOLUTION: A method for correcting a torque sensor zero-point error has a first step, a second step, and a third step. In the first step, the phase of a torque sensor 1 relative to an evaluation facility is changed at fixed intervals while the torque sensor 1 is fitted to the evaluation facility, and each of the indicated value of the torque sensor 1 to each of the phases is acquired. In the second step, the average values of indicated values of the torque sensor 1 acquired in the first step is calculated, and a phase of the torque sensor 1 is determined that corresponds to the one whose acquired indicated value of the torque sensor 1 is closest to the average value. In the third step, the phase of the torque sensor 1 is corrected for zero-point error while being kept stationary at the phase determined in the second step.SELECTED DRAWING: Figure 3 【課題】トルクセンサと評価設備との相対的な位置関係が変化して芯振れや面振れなどが生じても、トルク測定の精度を改善できる、トルクセンサの零点補正方法を提供する。【解決手段】トルクセンサの零点誤差の補正補法は、第一ステップ、第二ステップ及び第三ステップの三つのステップを有する。第一ステップでは、トルクセンサ１が評価設備に取り付けされた状態で評価設備に相対的なトルクセンサ１の位相を一定の間隔で変化させ、位相のそれぞれに対するトルクセンサ１の指示値をそれぞれ取得する。第二ステップでは、第一ステップで取得したトルクセンサ１の指示値の平均値を算出し、取得したトルクセンサ１の指示値が平均値に最も近いものに対応するトルクセンサ１の位相を決定する。第三ステップでは、トルクセンサ１の位相を、第二ステップで決定した位相で静止させた状態で零点誤差の補正を行う。【選択図】図３