Title:
プロペラ負荷状態推定装置、プロペラ負荷状態推定方法、およびプロペラ負荷状態推定プログラム
Document Type and Number:
Japanese Patent JP6910640
Kind Code:
B2
Abstract:
To estimate accurately a propeller load state using the monitoring data of the motor without installing additional measuring instruments.SOLUTION: A load state estimating device of a propeller of present embodiment is a device to estimate the propeller load state of a ship with the propeller driven by a motor, and comprises the current value acquisition unit to acquire the current value of the monitoring data of the motor cited above at the prescribed sampling period, the current value calculation unit to calculate the current value of the observed load representing the propeller load state based on the current value of the monitoring data cited above, the stored data reading unit to read out of the calculated value storage unit by regarding the data row of the observed load as the analysis object data in the predetermined period of the signal analysis object, the signal analysis unit to execute the signal analysis processing for analysis object data, the state estimation unit to estimate the propeller load state based on the execution result of the signal analysis processing and the estimated result output unit to output the estimated propeller load state.SELECTED DRAWING: Figure 6
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Inventors:
Takeshi Oide
Prize Masahiro
Etsuo Shimizu
Hatsuhisa Tatsuya
Satoshi Ihara
Prize Masahiro
Etsuo Shimizu
Hatsuhisa Tatsuya
Satoshi Ihara
Application Number:
JP2017095748A
Publication Date:
July 28, 2021
Filing Date:
May 12, 2017
Export Citation:
Assignee:
Tokyo University of Marine Science and Technology
International Classes:
B63H21/17; B63H21/21; H02P29/024
Domestic Patent References:
| JP2016197040A | ||||
| JP8258793A | ||||
| JP2010089550A | ||||
| JP60160297U | ||||
| JP2012165979A |
Foreign References:
| WO2008155448A1 | ||||
| CN105591364A |
Other References:
大出剛,“電気モータ推進システムにおけるプロペラ周囲気泡による負荷変動のセンシングと動特性評価”,博士論文,東京海洋大学,2018年,p.25-31,URL,http://id.nii.ac.jp/1342/00001622/
Attorney, Agent or Firm:
Hiroyuki Nagai
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Masashi Yoshida
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Masashi Yoshida