FR2490387A1 - Systeme de transducteur ayant une plus grande capacite de poursuite - Google Patents
Systeme de transducteur ayant une plus grande capacite de poursuite Download PDFInfo
- Publication number
- FR2490387A1 FR2490387A1 FR8114645A FR8114645A FR2490387A1 FR 2490387 A1 FR2490387 A1 FR 2490387A1 FR 8114645 A FR8114645 A FR 8114645A FR 8114645 A FR8114645 A FR 8114645A FR 2490387 A1 FR2490387 A1 FR 2490387A1
- Authority
- FR
- France
- Prior art keywords
- signal
- signals
- phase
- transducer
- speed
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 10
- 230000003111 delayed effect Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000006870 function Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Character Spaces And Line Spaces In Printers (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
- Control Of Position Or Direction (AREA)
- Control Of Linear Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/187,265 US4378519A (en) | 1980-09-15 | 1980-09-15 | Transducer system with increased tracking capability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2490387A1 true FR2490387A1 (fr) | 1982-03-19 |
| FR2490387B1 FR2490387B1 (https=) | 1984-06-22 |
Family
ID=22688273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8114645A Granted FR2490387A1 (fr) | 1980-09-15 | 1981-07-28 | Systeme de transducteur ayant une plus grande capacite de poursuite |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4378519A (https=) |
| JP (1) | JPS5782255A (https=) |
| FR (1) | FR2490387A1 (https=) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4419701A (en) * | 1981-09-21 | 1983-12-06 | Quantum Corporation | Data transducer position control system for rotating disk data storage equipment |
| US4499510A (en) * | 1982-08-03 | 1985-02-12 | Weltec Digital, Inc. | Precision alignment system for information storage devices |
| JPS61211711A (ja) * | 1985-03-16 | 1986-09-19 | Pioneer Electronic Corp | 位相比較器 |
| US5867023A (en) * | 1997-02-04 | 1999-02-02 | Sunstrand Corporation | Converter circuit for rotary transformer sensing devices |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086636A (en) * | 1977-02-28 | 1978-04-25 | Xerox Corporation | Restore method and apparatus for disk drive |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1214307B (de) * | 1964-08-06 | 1966-04-14 | Siemens Ag | Regeleinrichtung zur Positionierung von Arbeitsmaschinen |
| USRE30161E (en) | 1970-03-30 | 1979-11-27 | Xerox Corporation | Apparatus measuring relative velocity of movable members including means to detect velocity from the position encoder |
| US4270073A (en) * | 1979-02-28 | 1981-05-26 | Persci, Inc. | Position control in disk drive system |
| US4272818A (en) * | 1979-07-19 | 1981-06-09 | The Bendix Corporation | Position feedback control system for a numerically controlled machine tool |
| US4319172A (en) * | 1980-02-25 | 1982-03-09 | Tracer Control Company | Numerical control system |
-
1980
- 1980-09-15 US US06/187,265 patent/US4378519A/en not_active Expired - Lifetime
-
1981
- 1981-07-28 FR FR8114645A patent/FR2490387A1/fr active Granted
- 1981-09-07 JP JP56140817A patent/JPS5782255A/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086636A (en) * | 1977-02-28 | 1978-04-25 | Xerox Corporation | Restore method and apparatus for disk drive |
Also Published As
| Publication number | Publication date |
|---|---|
| US4378519A (en) | 1983-03-29 |
| FR2490387B1 (https=) | 1984-06-22 |
| JPS5782255A (en) | 1982-05-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |