Title:
艦載消磁装置
Document Type and Number:
Japanese Patent JP7115283
Kind Code:
B2
Abstract:
To provide a ship-based demagnetizer capable of maintaining a magnetic signature in an almost best form by adjusting a demagnetizing current of the sound demagnetizer without using a magnetic sensor when some of the demagnetizers fail.SOLUTION: A storage unit 11 stores an ideal magnetic field neutralizing residual magnetism in permanent magnetic portion of a hull and a demagnetization coil effect of each of a plurality of demagnetizers 20. A magnetic field calculator 13 calculates present magnetic field occurring due to the remaining demagnetizers 20 based on a current flowing to a demagnetization coil of the remaining demagnetizers 20 and the demagnetizing coil effect when some of the plurality of demagnetizers 20 fail. A compensation demagnetizing current value calculation unit 14 calculates the difference between the ideal magnetic field and the present magnetic field when a failure occurs in one portion of the plurality of demagnetizers 20, and calculates a complementary demagnetizing current value of the remaining demagnetizers 20 necessary in order to come close to the ideal magnetic field based on the demagnetizing coil effect. A command unit 15 transmits a control signal according to the complementary demagnetizing current value to the remaining demagnetizers 20.SELECTED DRAWING: Figure 1
Inventors:
Keiichi Takita
Application Number:
JP2018233614A
Publication Date:
August 09, 2022
Filing Date:
December 13, 2018
Export Citation:
Assignee:
Toshiba Mitsubishi Electric Industrial Systems Co., Ltd.
International Classes:
B63G9/06; H01F13/00
Domestic Patent References:
| JP6508582A | ||||
| JP2016210364A | ||||
| JP201193383A | ||||
| JP2018111326A | ||||
| JP2019161159A |
Foreign References:
| KR1020140139147A |
Other References:
里見晴和,“艦艇磁気技術 電磁気による探知技術または艦艇の電磁界低減技術”,防衛技術ジャーナル,日本,防衛技術協会,2013年08月01日,第33巻第8号,p.29-37,ISSN:0919-8555
Nak-Sun Choiら,“Optimization of Degaussing Coil Currents for Magnetic Silencing of a Ship Taking the Ferromagnetic,IEEE Transactions on Applied Superconductivity,米国,2012年06月,Vol.22, No.3,DOI:10.1109/TASC.2011.2180296,ISSN:1051-8223
R A Raveendra Varma,“Design of Degaussing System and Demonstration of Signature Reduction on Ship Model through Laborat,Physics Procedia,NL,Elsevier B.V.,2014年,Vol.54,pp.174-179,DOI:10.1016/j.phpro.2014.10.056,ISSN:1875-3892
防衛技術ジャーナル編集部,“第6章 磁気技術”,海上防衛技術のすべて,初版第1刷,日本,防衛技術協会,2007年04月01日,pp.182-217,ISBN:4-9900298-3-6
Nak-Sun Choiら,“Optimization of Degaussing Coil Currents for Magnetic Silencing of a Ship Taking the Ferromagnetic,IEEE Transactions on Applied Superconductivity,米国,2012年06月,Vol.22, No.3,DOI:10.1109/TASC.2011.2180296,ISSN:1051-8223
R A Raveendra Varma,“Design of Degaussing System and Demonstration of Signature Reduction on Ship Model through Laborat,Physics Procedia,NL,Elsevier B.V.,2014年,Vol.54,pp.174-179,DOI:10.1016/j.phpro.2014.10.056,ISSN:1875-3892
防衛技術ジャーナル編集部,“第6章 磁気技術”,海上防衛技術のすべて,初版第1刷,日本,防衛技術協会,2007年04月01日,pp.182-217,ISBN:4-9900298-3-6
Attorney, Agent or Firm:
Takada Mamoru
Hideki Takahashi
Hideki Takahashi
Previous Patent: Traffic management device, traffic management system, traffic management method, and computer progra...
Next Patent: 非球面部材のみがき装置
Next Patent: 非球面部材のみがき装置