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TEST PIECE CHARACTERISTIC ESTIMATION METHOD AND TEST PIECE CHARACTERISTIC ESTIMATION DEVICE
TEST PIECE CHARACTERISTIC ESTIMATION METHOD AND TEST PIECE CHARACTERISTIC ESTIMATION DEVICE
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机译:试验件特征估计方法及试验件特征估计装置
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摘要
The purpose of the present invention is to provide a test piece characteristic estimation method capable of quickly measuring the moment of inertia of a test piece while taking loss resulting from rotational friction of the test piece into consideration. This test piece characteristic estimation method is provided with a step (S1) for measuring a first transfer function G1 from a torque current command for a dynamometer to output from a shaft torque sensor by vibrationally operating the dynamometer, a step (S2) for measuring a second transfer function G2 from the torque current command to the output of a dynamo rotation speed sensor by vibrationally operating the dynamometer, and steps (S3 and S4) for calculating the value of a ratio obtained by dividing the second transfer function G2 by the first transfer function G1 at a prescribed measurement frequency ωk and using the ratio value to calculate a moment of inertia Jeg and a rotational friction Ceg.
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机译:发明内容本发明的目的是提供一种试件特性估计方法,该方法能够在考虑由试件的旋转摩擦引起的损失的同时快速地测量试件的惯性矩。该试验片特性推定方法包括:通过使测力计振动而从测功机的转矩电流指令到轴扭矩传感器的输出来测量第一传递函数G1的步骤(S1),以及测量测力的步骤(S2)。通过振动测功机从转矩电流指令到发电机转速传感器的输出的第二传递函数G2,以及用于计算通过将第二传递函数G2除以第一传递而获得的比率的值的步骤(S3和S4)函数G1在规定的测量频率ω k Sub>处,并使用比率值计算惯性矩Jeg和旋转摩擦Ceg。
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