JP2014507044A5 - - Google Patents

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Publication number
JP2014507044A5
JP2014507044A5 JP2013556629A JP2013556629A JP2014507044A5 JP 2014507044 A5 JP2014507044 A5 JP 2014507044A5 JP 2013556629 A JP2013556629 A JP 2013556629A JP 2013556629 A JP2013556629 A JP 2013556629A JP 2014507044 A5 JP2014507044 A5 JP 2014507044A5
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JP
Japan
Prior art keywords
signal
input signal
actuator
output signal
known frequency
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JP2013556629A
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English (en)
Japanese (ja)
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JP6139414B2 (ja
JP2014507044A (ja
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Publication date
Priority claimed from US13/036,184 external-priority patent/US8730611B2/en
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Publication of JP2014507044A publication Critical patent/JP2014507044A/ja
Publication of JP2014507044A5 publication Critical patent/JP2014507044A5/ja
Application granted granted Critical
Publication of JP6139414B2 publication Critical patent/JP6139414B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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JP2013556629A 2011-02-28 2012-01-30 接触検出 Expired - Fee Related JP6139414B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13/036,184 US8730611B2 (en) 2011-02-28 2011-02-28 Contact detection
US13/036,184 2011-02-28
PCT/US2012/023118 WO2012118583A1 (en) 2011-02-28 2012-01-30 Contact detection

Publications (3)

Publication Number Publication Date
JP2014507044A JP2014507044A (ja) 2014-03-20
JP2014507044A5 true JP2014507044A5 (enExample) 2014-10-16
JP6139414B2 JP6139414B2 (ja) 2017-05-31

Family

ID=45852691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013556629A Expired - Fee Related JP6139414B2 (ja) 2011-02-28 2012-01-30 接触検出

Country Status (6)

Country Link
US (2) US8730611B2 (enExample)
EP (1) EP2681736A1 (enExample)
JP (1) JP6139414B2 (enExample)
KR (1) KR101947347B1 (enExample)
CN (1) CN103493132B (enExample)
WO (1) WO2012118583A1 (enExample)

Families Citing this family (18)

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US8681445B1 (en) 2012-06-28 2014-03-25 Western Digital Technologies, Inc. Disk drive detecting head touchdown by computing anti-correlation in sensor signal
US8970978B1 (en) * 2012-10-22 2015-03-03 Western Digital Technologies, Inc. Disk drive detecting head touchdown by applying DC+AC control signal to fly height actuator
US8638349B1 (en) * 2013-03-11 2014-01-28 Seagate Technology Llc Head-medium contact detection using introduced heat oscillation
US8953275B2 (en) 2013-06-17 2015-02-10 Seagate Technology Llc In situ sensor based contact detection
US8908317B1 (en) * 2014-01-27 2014-12-09 Kabushiki Kaisha Toshiba Method for detecting touchdown of head and disk storage apparatus
US9053729B1 (en) 2014-07-23 2015-06-09 Seagate Technology Llc Nonlinearity-based contact prediction
US9595280B2 (en) * 2015-02-26 2017-03-14 Western Digital Technologies, Inc Hard disk drive head-disk interface dithering
US9443543B1 (en) * 2015-03-11 2016-09-13 Kabushiki Kaisha Toshiba Disk storage device and method for controlling head flying height
JP6349279B2 (ja) * 2015-03-25 2018-06-27 日本発條株式会社 電子部品の接合強度試験装置及び接合強度試験方法
US9466328B1 (en) * 2015-05-22 2016-10-11 Kabushiki Kaisha Toshiba Contact-detecting method, manufacturing method of disk drive, and disk drive
US9437234B1 (en) 2015-08-20 2016-09-06 Seagate Technology Llc Head-medium contact detection using high frequency heater oscillation
US9761270B1 (en) 2016-12-21 2017-09-12 Seagate Technology Llc Data storage device using high and low frequencies AC heat produce position-error-signals for head contact detection
JP6390774B1 (ja) 2017-09-13 2018-09-19 株式会社明電舎 動力計制御装置
US10217481B1 (en) 2018-03-19 2019-02-26 Western Digital Technologies, Inc. Data storage device employing low duty cycle square wave to detect head touchdown
US11150150B2 (en) 2018-09-07 2021-10-19 Meidensha Corporation Dynamometer control device
JP6737363B1 (ja) 2019-02-28 2020-08-05 株式会社明電舎 動力計制御装置

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US6008640A (en) 1997-04-28 1999-12-28 Seagate Technology, Inc. Detection and measurement of head disc interference using read back signal (without acoustic emission sensor or laser doppler vibrometer)
US6097559A (en) * 1998-06-26 2000-08-01 International Business Machines Corporation System and method for detecting head-to-disk contact in-situ a direct access storage device using a position error signal
US6822821B2 (en) 2001-01-19 2004-11-23 Seagate Technology Llc Method and apparatus for predicting a head crash in a disc drive
US6967805B1 (en) 2002-04-09 2005-11-22 Seagate Technology Llc In-situ monitoring of proximity and contact between a slider and a disc in a disc drive
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US9202495B2 (en) 2007-05-01 2015-12-01 Seagate Technology Llc Method and apparatus for detecting proximity contact between a transducer and a medium
JP2009087405A (ja) * 2007-09-27 2009-04-23 Hitachi Global Storage Technologies Netherlands Bv ディスク・ドライブ装置、その製造方法及びクリアランス調整するヒータのヒータ・パワー値を設定する方法
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JP2009157987A (ja) * 2007-12-26 2009-07-16 Hitachi Global Storage Technologies Netherlands Bv ヘッド・スライダのリセス量を調整する方法及びディスク・ドライブ装置
KR20090113559A (ko) * 2008-04-28 2009-11-02 삼성전자주식회사 터치-다운 근접 비행 높이 추정 방법 및 장치와 이를이용한 비행 높이 조정 방법 및 디스크 드라이브
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US8139310B1 (en) * 2010-01-06 2012-03-20 Western Digital Technologies, Inc. Fly height sensor control circuit
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