US 2020/0348206 A1Published application

Mechanical characteristic estimating method

AssigneeMeidensha Corporation

InventorTakao AKIYAMA

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Abstract

The mechanical characteristic estimating method is a method for estimating a value of a mechanical characteristic parameter of a test piece W provided with a first shaft S1, and a second shaft S2 and a third shaft S3 which are connected to the first shaft S1. The mechanical characteristic estimating method includes: a first measuring step of measuring a resonant frequency ωL of the test piece in a state in which a gear ratio of the transmission TM1 and the differential gear TM2 is set to a first gear ratio gL; a second measuring step of measuring the resonant frequency ωH of the test piece in a state in which the gear ratio is set to a second gear ratio gH; and an estimating step of calculating the resonant frequencies ωL and ωH, the gear ratios gL and gH, and an estimated value of a spring stiffness.

Claims6

Dependent claims

A mechanical characteristic estimation method of estimating a value of a mechanical characteristic parameter of a test piece which includes a first shaft and a second shaft and a third shaft that are connected to the first shaft through a transmission mechanism so as to be able to transfer power thereto, the mechanical characteristic estimation method comprising:

measuring a first resonant frequency of the test piece in a state where a gear ratio of the transmission mechanism is set to a first gear ratio;
measuring a second resonant frequency of the test piece in a state where the gear ratio of the transmission mechanism is set to a second gear ratio different from the first gear ratio;
and
calculating an estimated value of the mechanical characteristic parameter by using the first resonant frequency, the second resonant frequency, the first gear ratio and the second gear ratio.

1 more element

Dependencies are inferred from the claim text.