PATENT CLAIM ANALYSIS

Application Number: 16068484
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["073", "862080"]

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 (S 1 ) for measuring a first transfer function G 1  from a torque current command for a dynamometer to output from a shaft torque sensor by vibrationally operating the dynamometer, a step (S 2 ) for measuring a second transfer function G 2  from the torque current command to the output of a dynamo rotation speed sensor by vibrationally operating the dynamometer, and steps (S 3  and S 4 ) for calculating the value of a ratio obtained by dividing the second transfer function G 2  by the first transfer function G 1  at a prescribed measurement frequency ω k  and using the ratio value to calculate a moment of inertia Jeg and a rotational friction Ceg.

Claim (Index 8):
A test piece characteristic estimation method which uses a test system comprising: a dynamometer joined with a test piece via a connecting shaft; a shaft torque sensor which detects shaft torque generated at the connecting shaft; and a revolution speed detector which detects a revolution speed of an output shaft of the test piece or the dynamometer, the method estimating the moment of inertia with an output shaft of the test piece as a rotation shaft, the method comprising the steps of:\n measuring a first transfer function from a torque current command relative to the dynamometer until an output of the shaft torque sensor by vibrationally operating the dynamometer; measuring a second transfer function from the torque current command until an output of the revolution speed detector by vibrationally operating the dynamometer; and calculating a value at a predetermined measurement frequency of a ratio obtained by dividing the second transfer function by the first transfer function, and estimating the moment of inertia using the value of the ratio, wherein, in the step of estimating, the first transfer function is defined as G 1 ( s ), and the second transfer function is defined as G 2 ( s ), a value of the moment of inertia Jeg of the test piece is calculated according to the formula below established for the moment of inertia Jeg and a rotational friction Ceg with the output shaft of the test piece as a rotational shaft. G \ue89e \ue89e 2 \ue89e ( s ) G \ue89e \ue89e 1 \ue89e ( s ) \u2245 1 Ceg + Jeg \u00b7 s ( 5 )

Metadata:
- Claim Count in Document: 15.0
- Percentile: 95.0
- Lexical Diversity: 2.25641
- Patent Class: 73.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16319709', '15542890', '14891287', '12742383', '15027932']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6777244346019589
- 35 USC 102 Novelty (BERT): 0.5121003112844853
- Combined Prediction Score: 0.6611620222702116
- Mean Citation Score: 257.08032000000003
- Max Citation Score: 305.0733600000001
- Similarity Product: 261.03160417983065

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test