Title:
回転状態判断装置
Document Type and Number:
Japanese Patent JP7404146
Kind Code:
B2
Abstract:
To provide a rotation state determination device capable of determining a rotation state of a rotor or a support part supporting the rotor when the rotor is rotated by a motor.SOLUTION: A rotation state determination device comprises a motor 30 for rotating a roll 14 which is supported in a freely rotatable manner by bearings 26 and 28. A driving current of the motor 30 is calculated as a detection value I(t), and a torque T(t) is detected. The torque T(t) is converted into a current value to calculate a conversion value Ik(t), and an estimated regenerative current d(t) is calculated from the detection value I(t) and the conversion value Ik(t). A matching rate (e) within a measurement time range t0 is calculated from the estimated regenerative current d(t) and as the matching rate (e) is lower, a rotation state of the roll 14 or of the bearings 26 and 28 are determined worse.SELECTED DRAWING: Figure 1
Inventors:
Akira Kudo
Hiroshi Ohshita
Hiasa Tsuyoshi
Hiroshi Ohshita
Hiasa Tsuyoshi
Application Number:
JP2020076312A
Publication Date:
December 25, 2023
Filing Date:
April 22, 2020
Export Citation:
Assignee:
Hirano Tech Seed Co., Ltd.
International Classes:
G01M13/04; G01M99/00
Domestic Patent References:
| JP843255A | ||||
| JP200630043A | ||||
| JP201963881A |
Attorney, Agent or Firm:
Patent Attorney Corporation Tsutata Patent Office
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