Title:
TEST PIECE CHARACTERISTIC ESTIMATION METHOD AND TEST PIECE CHARACTERISTIC ESTIMATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/119243
Kind Code:
A1
Abstract:
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.
Inventors:
AKIYAMA TAKAO (JP)
Application Number:
PCT/JP2016/087057
Publication Date:
July 13, 2017
Filing Date:
December 13, 2016
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD (JP)
International Classes:
G01M15/02
Foreign References:
| JP2008076061A | 2008-04-03 | |||
| JPH11194073A | 1999-07-21 | |||
| JP2003294550A | 2003-10-15 | |||
| US5656768A | 1997-08-12 |
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
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