IT1074043B - Servocomando perfezionato per il posizionamento di trasduttori - Google Patents
Servocomando perfezionato per il posizionamento di trasduttoriInfo
- Publication number
- IT1074043B IT1074043B IT29126/76A IT2912676A IT1074043B IT 1074043 B IT1074043 B IT 1074043B IT 29126/76 A IT29126/76 A IT 29126/76A IT 2912676 A IT2912676 A IT 2912676A IT 1074043 B IT1074043 B IT 1074043B
- Authority
- IT
- Italy
- Prior art keywords
- perfected
- servo control
- positioning transducers
- transducers
- positioning
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/22—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records
- G11B17/30—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records wherein the playing unit is moved according to the location of the selected record
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/14—Control of position or direction using feedback using an analogue comparing device
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/20—Control of position or direction using feedback using a digital comparing device
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/021—Selecting or spacing of record carriers for introducing the heads
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Moving Of Heads (AREA)
- Automatic Disk Changers (AREA)
- Feedback Control In General (AREA)
- Control Of Position Or Direction (AREA)
- Actuator (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/642,646 US4191981A (en) | 1975-12-19 | 1975-12-19 | Record storage apparatus employing enhanced transducer positioning servomechanisms |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1074043B true IT1074043B (it) | 1985-04-17 |
Family
ID=24577442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT29126/76A IT1074043B (it) | 1975-12-19 | 1976-11-09 | Servocomando perfezionato per il posizionamento di trasduttori |
Country Status (7)
Country | Link |
---|---|
US (1) | US4191981A (it) |
JP (1) | JPS5816540B2 (it) |
CA (1) | CA1074422A (it) |
DE (1) | DE2645467C2 (it) |
FR (1) | FR2335883A1 (it) |
GB (1) | GB1541586A (it) |
IT (1) | IT1074043B (it) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4291349A (en) * | 1976-08-04 | 1981-09-22 | Burroughs Corporation | Diverter means for flexible disk pack and associated method |
US4143408A (en) * | 1977-11-28 | 1979-03-06 | International Business Machines Corp. | External selector and internal controller for flexible disc stack |
US4330803A (en) * | 1979-08-06 | 1982-05-18 | International Business Machines Corporation | Disk accessing apparatus and method |
US4363056A (en) * | 1980-02-29 | 1982-12-07 | Digital Equipment Corporation | Disk housing for disk drive mass storage unit |
US5090002A (en) * | 1989-03-07 | 1992-02-18 | International Business Machines Corporation | Positioning systems employing velocity and position control loops with position control loop having an extended range |
JP3096334B2 (ja) * | 1991-11-08 | 2000-10-10 | パイオニア株式会社 | 位置検出装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3757192A (en) * | 1971-01-04 | 1973-09-04 | Toyoda Machine Works Ltd | Plural stepping motor numerical feed control device |
US3940794A (en) * | 1974-06-19 | 1976-02-24 | International Business Machines Corporation | Stacked flexible record disk storage apparatus having enhanced disk separation |
US3936880A (en) * | 1974-07-01 | 1976-02-03 | International Business Machines Corporation | Bistable deflection separation of flexible disks |
US4011590A (en) * | 1975-11-04 | 1977-03-08 | International Business Machines Corporation | Internal division actuation of ventilated floppy disk stack |
-
1975
- 1975-12-19 US US05/642,646 patent/US4191981A/en not_active Expired - Lifetime
-
1976
- 1976-10-08 DE DE2645467A patent/DE2645467C2/de not_active Expired
- 1976-11-03 GB GB45671/76A patent/GB1541586A/en not_active Expired
- 1976-11-09 IT IT29126/76A patent/IT1074043B/it active
- 1976-11-12 FR FR7634822A patent/FR2335883A1/fr active Granted
- 1976-11-19 JP JP51138591A patent/JPS5816540B2/ja not_active Expired
- 1976-12-20 CA CA268,239A patent/CA1074422A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5277711A (en) | 1977-06-30 |
US4191981A (en) | 1980-03-04 |
FR2335883B1 (it) | 1978-12-29 |
GB1541586A (en) | 1979-03-07 |
DE2645467A1 (de) | 1977-06-30 |
CA1074422A (en) | 1980-03-25 |
DE2645467C2 (de) | 1982-06-09 |
FR2335883A1 (fr) | 1977-07-15 |
JPS5816540B2 (ja) | 1983-03-31 |
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