JPS4815839B1 - - Google Patents
Info
- Publication number
- JPS4815839B1 JPS4815839B1 JP45005169A JP516970A JPS4815839B1 JP S4815839 B1 JPS4815839 B1 JP S4815839B1 JP 45005169 A JP45005169 A JP 45005169A JP 516970 A JP516970 A JP 516970A JP S4815839 B1 JPS4815839 B1 JP S4815839B1
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- 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
- G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59605—Circuits
- G11B5/59622—Gain control; Filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/16—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal
-
- 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
- G01P3/50—Devices characterised by the use of electric or magnetic means for measuring linear speed
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
- G05B19/21—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device
- G05B19/23—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control
- G05B19/231—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
- G05B19/39—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using a combination of the means covered by at least two of the preceding groups G05B19/21, G05B19/27 and G05B19/33
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Automation & Control Theory (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Control Of Position Or Direction (AREA)
- Feedback Control In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79234369A | 1969-01-21 | 1969-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4815839B1 true JPS4815839B1 (ja) | 1973-05-17 |
Family
ID=25156574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP45005169A Pending JPS4815839B1 (ja) | 1969-01-21 | 1970-01-21 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3597750A (ja) |
| JP (1) | JPS4815839B1 (ja) |
| DE (1) | DE2002203C3 (ja) |
| FR (1) | FR2028775A1 (ja) |
| GB (1) | GB1294841A (ja) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3737883A (en) * | 1971-08-18 | 1973-06-05 | Information Storage Systems | Linear positioning apparatus for memory disc pack drive mechanisms |
| US3806254A (en) * | 1971-12-08 | 1974-04-23 | Information Storage Systems | Agc servo system having error signal responsive to a non-extinguishable intensity light energy signal |
| US3945037A (en) * | 1972-06-01 | 1976-03-16 | Iomec, Inc. | Feedback control system for linear position transducer |
| US3864741A (en) * | 1973-06-28 | 1975-02-04 | Ibm | Servo channel equalization network |
| JPS5344777A (en) * | 1976-10-03 | 1978-04-21 | Ricoh Co Ltd | Closed loop servo-controlling system |
| JPS5921104B2 (ja) * | 1977-03-08 | 1984-05-17 | 日本ビクター株式会社 | 情報記録媒体再生装置におけるトラッキングサ−ボ装置 |
| JPS5925300B2 (ja) * | 1977-12-28 | 1984-06-16 | 日本ビクター株式会社 | 情報信号再生装置のフイ−ド自動追従装置 |
| US4291346A (en) * | 1979-06-04 | 1981-09-22 | Texas Instruments Incorporated | Optoelectronic system for determining the position of a magnetic head transducer on a flexible magnetic recording disc |
| US4920434A (en) * | 1980-09-24 | 1990-04-24 | Quantum Corporation | Fixed disk drive |
| US4982296A (en) * | 1980-09-24 | 1991-01-01 | Quantum Corporation | Head and disk assembly for fixed disk drive |
| EP0074767B1 (en) * | 1981-09-07 | 1988-01-27 | Hugh-Peter Granville Kelly | Improvements in or relating to linear motor and control circuitry therefor |
| US4516178A (en) * | 1982-09-15 | 1985-05-07 | Ampex Corporation | Cylinder crossing detection circuit for disc drive or the like |
| US4516177A (en) * | 1982-09-27 | 1985-05-07 | Quantum Corporation | Rotating rigid disk data storage device |
| EP0104941A3 (en) * | 1982-09-27 | 1985-11-06 | Quantum Corporation | Data storage devices |
| JPH0758206B2 (ja) * | 1984-03-30 | 1995-06-21 | 株式会社日立製作所 | モワレ縞を用いた位置検出装置 |
| DD225497A1 (de) * | 1984-04-02 | 1985-07-31 | Zeiss Jena Veb Carl | Einrichtung und verfahren zum messen und einstellen von laengen |
| US4647769A (en) * | 1984-05-11 | 1987-03-03 | Quantum Corporation | Optical encoder having controllable lead-lag phase trim sensitivity |
| GB2161262A (en) * | 1984-07-05 | 1986-01-08 | Co Operative Technology Ltd | Digital instrumentation apparatus for the linear air-track |
| US5270886A (en) * | 1989-08-07 | 1993-12-14 | Antek Peripherals, Inc. | Two motor servo system for a removable disk drive |
| US5091808A (en) * | 1989-08-07 | 1992-02-25 | Nigam Anil K | Two-motor servo mechanism system for a magnetic disk drive |
| JPH0512690A (ja) * | 1991-07-08 | 1993-01-22 | Toshiba Corp | 対物レンズの位置検知回路 |
| US5442172A (en) * | 1994-05-27 | 1995-08-15 | International Business Machines Corporation | Wavefront reconstruction optics for use in a disk drive position measurement system |
| TW256914B (en) * | 1994-05-27 | 1995-09-11 | Ibm | Servo-writing system for use in a data recording disk drive |
| CN106251886B (zh) * | 2015-06-05 | 2019-02-01 | 株式会社东芝 | 伺服写方法、磁盘装置以及磁头位置控制方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB987357A (en) * | 1962-11-30 | 1965-03-24 | Ibm | Memory system employing a magnetic recording medium |
| US3362021A (en) * | 1963-12-17 | 1968-01-02 | Ibm | Servo positioning system for magnetic disc memory |
-
1969
- 1969-01-21 US US792343*A patent/US3597750A/en not_active Expired - Lifetime
-
1970
- 1970-01-06 GB GB1294841D patent/GB1294841A/en not_active Expired
- 1970-01-16 FR FR7001520A patent/FR2028775A1/fr not_active Withdrawn
- 1970-01-19 DE DE2002203A patent/DE2002203C3/de not_active Expired
- 1970-01-21 JP JP45005169A patent/JPS4815839B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1294841A (ja) | 1972-11-01 |
| US3597750A (en) | 1971-08-03 |
| DE2002203C3 (de) | 1975-04-10 |
| FR2028775A1 (ja) | 1970-10-16 |
| DE2002203B2 (de) | 1974-08-01 |
| DE2002203A1 (de) | 1970-07-30 |