SG75146A1 - Method and apparatus for braking a polyphase dc motor - Google Patents

Method and apparatus for braking a polyphase dc motor

Info

Publication number
SG75146A1
SG75146A1 SG1998005376A SG1998005376A SG75146A1 SG 75146 A1 SG75146 A1 SG 75146A1 SG 1998005376 A SG1998005376 A SG 1998005376A SG 1998005376 A SG1998005376 A SG 1998005376A SG 75146 A1 SG75146 A1 SG 75146A1
Authority
SG
Singapore
Prior art keywords
polyphase
braking
motor
Prior art date
Application number
SG1998005376A
Other languages
English (en)
Inventor
Shaibal Barua
William R Krenik
Original Assignee
Texas Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of SG75146A1 publication Critical patent/SG75146A1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/06—Control of operating function, e.g. switching from recording to reproducing by counting or timing of machine operations
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/22—Brakes other than speed-regulating brakes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
SG1998005376A 1997-12-31 1998-12-09 Method and apparatus for braking a polyphase dc motor SG75146A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7015897P 1997-12-31 1997-12-31

Publications (1)

Publication Number Publication Date
SG75146A1 true SG75146A1 (en) 2000-09-19

Family

ID=22093507

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1998005376A SG75146A1 (en) 1997-12-31 1998-12-09 Method and apparatus for braking a polyphase dc motor

Country Status (7)

Country Link
US (1) US6177772B1 (de)
EP (1) EP0927998B1 (de)
JP (1) JP4528378B2 (de)
KR (1) KR100625704B1 (de)
DE (1) DE69834095T2 (de)
SG (1) SG75146A1 (de)
TW (1) TW405292B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6476996B1 (en) * 2000-02-15 2002-11-05 Western Digital Technologies, Inc. Disk drive comprising an actuator driver circuit for retracting a head independent of a servo microprocessor when a spindle speed fault mode is detected
US6549361B1 (en) * 2000-04-19 2003-04-15 Western Digital Technologies, Inc. Disk drive comprising spin down circuitry having a power clamp circuit for enhancing power and braking control
US6819072B2 (en) * 2000-12-18 2004-11-16 Texas Instruments Incorporated Disk drive servo arm retract and spindle brake circuit
US7061707B2 (en) * 2003-11-26 2006-06-13 Stmicroelectronics Asia Pacific Pte. Ltd. Configurable multi-mode architecture for power loss retraction of the read/write head of a hard disk drive
CN100350486C (zh) * 2004-04-14 2007-11-21 合邦电子股份有限公司 非混合型的互补型金氧半晶体管播放机马达驱动电路
US9209720B2 (en) 2013-09-24 2015-12-08 Seagate Technology Llc Energy transfer between data storage devices with moving parts
US9240742B1 (en) 2013-12-06 2016-01-19 Seagate Technology Llc Current boost circuit
US9105290B2 (en) * 2013-12-11 2015-08-11 Seagate Technology Llc Discontinuous charge/discharge power source for retract application
WO2019022711A1 (en) * 2017-07-25 2019-01-31 Hewlett-Packard Development Company, L.P. COUNTER-ELECTROMOTRIC FORCE CONTROLLERS

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658308A (en) * 1986-03-05 1987-04-14 Miniscribe Corporation Method and apparatus for retracting head and braking motor of a disc drive device
EP0441030B1 (de) 1990-02-06 1996-10-09 Seagate Technology International Motorbremsschaltung zum Gebrauch in einem magnetischen Plattenantriebssystem
JP3545049B2 (ja) * 1993-06-22 2004-07-21 エスティーマイクロエレクトロニクス，インコーポレイテッド 電源エネルギ障害時の逆起電力整流電圧
JPH0923688A (ja) * 1995-06-29 1997-01-21 Sgs Thomson Microelectron Inc ブラシレスｄｃモータ用パワーダウン制動ラッチ
EP0884727B1 (de) 1997-06-13 2006-02-01 STMicroelectronics, Inc. Bremsverriegelungschaltung bei Stromabschaltung für bürstenlosen Gleichstrommotor

Also Published As

Publication number Publication date
DE69834095T2 (de) 2006-08-31
TW405292B (en) 2000-09-11
KR19990063574A (ko) 1999-07-26
JPH11288553A (ja) 1999-10-19
EP0927998B1 (de) 2006-04-05
JP4528378B2 (ja) 2010-08-18
DE69834095D1 (de) 2006-05-18
KR100625704B1 (ko) 2006-11-30
EP0927998A2 (de) 1999-07-07
EP0927998A3 (de) 1999-10-27
US6177772B1 (en) 2001-01-23

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