• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    High tape acceleration rates are achieved in an unbuffered, capstanless tape drive system by a tape motion control apparatus employing separate drive motors for each reel of a reel-to-reel tape transport. Tape moves from one reel past a read/write head and a tape tension sensor to the other reel, there being no tachometer in the tape feed path. A tachometer on one reel shaft provides a large number of pulses per revolution which pulses are counted by a counter; and a tachometer on the other reel shaft provides only one pulse per revolution, which pulse gates out the count then accumulated in the counter for actuating means to provide motor acceleration currents of a magnitude corresponding to said accumulated count according to a predetermined servo algorithm for controlling rotation of both reels. A tape radius constant corresponding to the actual length and thickness of tape in the system is calculated during initial wrap of tape onto the takeup reel. Tension is tightly controlled by an analog tension sensor and servo system.
    公开号:SU786937A3
    申请号:SU782617643
    申请日:1978-05-18
    公开日:1980-12-07
    发明作者:Джэкоб Айге Джон；Мотибхей Патель Арвинд；Дональд Робертс Спенсер；Стедман Дэвид
    申请人:Интернэшнл Бизнес Машинз Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    (54) DEVICE FOR MANAGING THE MOVEMENT OF BELT RECORD MEDIA
    one
    The invention relates to the field of accumulation of information, namely, devices for controlling the movement of a tape recording medium, and can be applied to tape recorders.5
    A device for controlling the movement of a tape recording medium is known, which comprises a control signal generator connected to an electric motor mounted with the possibility of affecting the tape recording medium 1 by means of a drive shaft.
    A disadvantage of this device is the high power consumption for controlling the movement of the tape media.
    It is also known a device for controlling 15 the movement of a tape recording medium, which contains a pulse counter, the control input of which is connected to the output of the pulse sensor, the angular position of the receiving cathode, and the counting input - to the output of the pulse sensor 20 of the angular position of the supply coil, a digital-to-analog converter connected via the first filter and the first amplifier with the receiving node electric motor, the second Sch1-analogue converter, connecting 25
    It is implemented through a second filter and a second amplifier with an electric motor, a feed node, multipliers, adders, a mode switching unit, a digital decision unit, a switch, and an input bus of clock pulses 2.
    A disadvantage of this device is the large error in controlling the movement of the tape recording medium.
    The purpose of the invention is to reduce the error in controlling the movement of a tape recording medium.
    权利要求:
    Claims (2)
    [1]
    This is achieved by introducing a logical program generator, connected through a switch to the output of a pulse counter and connected to the input of a digital solver unit, table value storage units connected to the outputs of a digital solver unit, connected in series a clock deviation counter and a speed correction limiter included successively the position deviation counter and the limiter of the position correction and the successively connected probe; tension meter, made with a roller, paired with a tape recorder, a comparison unit with a reference level, and a filter connected to the inputs of the first and second amplifiers, the G1 switch unit of modes is connected with the outputs of speed limiter, correction limiter, position and with the inputs of the first and j second hardeners connected to the first and second adders, respectively, with the output of the pulse counter connected to the first table value storage unit connected through the second and third memorization blocks minimization of tabular values, respectively, with the first and second adders and through the fourth and fifth blocks of tabulated values of tabular values, respectively, with the first and second multipliers, the output of the pulse position angle sensor of the supply coil is connected to a counter of position deviations and a counter of clock deviations connected to the input csh clock pulses, the ratio of the number of pulses to the angle of rotation of the pulse sensor of the angular position1 of the receiving coil is less than}} the number of pulses to the angle of rotation of the pulse sensor ka angular position of the supply reel. A logical driver of direction signals connected to the output of the pulse sensor of the angular position of the feeding coil and to the inputs of the first and second adders can be entered into the device, with the pulse sensors: the angular positions of the receiving and feeding coils are made in the form of tachometers. The drawing shows a device for controlling the movement of a tape of a recording medium. The proposed device contains a pulse counter, the control input of which is connected to the output of the pulse sensor 2 of the angular position of the receiving coil 3, and the counting input with the output of the pulse sensor 4 of the angular position of the feeding coil 5, and the first and second digital to analogue converters 6 and 7. The first digital to analogue converter 6 through the first filter 8 and the first amplifier 9 is connected to the engine GO receiving node. The second digital-to-analog converter 7 through the second filter 11 and the second amplifier 12 - with the electric motor 13 of the feed unit. The device also contains a logical programmer 14, connected via a switch 15c with a pulse counter-1 output and connected to the input of a digital decision unit. 16, the outputs of which are connected to the first 17, second 18, third 19, fourth 20 and fifth 21 storing units of table values. In addition, there are 22 clock deviations and a speed correction limiter 23 that are connected in series in the device. 74 connected in series counter 24 deviations of position and limiter 25 of position correction, and also connected in series with a tentacle tension meter 26, made with roller 27 conjugated with recording tape medium 28, for example with a magnetic tape, unit 29 comparison with a reference level and third filter 30 connected to the inputs of the first and second amplifiers 9 "12. The mode switching unit 31 is connected to the outputs of the speed correction limiter 23 and the position correction limiter 25 from the input 32 of the first 32 and second 33 multipliers it, connected to the first 34 and second 35 adders, respectively. The output of pulse counter 1 is connected to the first table value storage unit 17, connected via the second 18 and third table storage units 19 to the first and second adders 34 and 35. In addition, the unit 17 is connected via the fourth and fifth blocks 20 and 21 to store the table values with the first 32 and the second 33 multipliers. The output of the pulse sensor 4 of the angular position of the supply coil 5 is connected to the counter 24 position deviations and to the counter 22 deviations connected to the input bus 36 clock pulses. The ratio of the number of pulses to the angle of rotation of the pulse sensor 2 of the angular position, the receiving coil 3 is less than the deviation of the number of pulses to the angle of rotation of the pulse sensor 4 of the feeding coil 5. The proposed device may also include a logic driver 37 for directional signals connected to the output of the pulse sensor 4 of the angular position feed coil 5 and to the inputs of the first and second adders. Pulse sensors 2 and 4 of the angular positions of the receiving and feeding coils 3 and 5 can be made in the form of tachometers. The digital decision unit 16 and the table value memory units provide values depending on the radii of the rolls of the tape recording medium 28 on the receiving and feeding coils .3 and 5. These values serve to generate such excitation signals for the electric motors 10 and 13 of the receiving 1} feed pin, which provide control of the movement of the tape carrier 28 of the recording in accordance with the radii of its rolls on the receiving and feeding coils 3 and 5. A device for controlling the movement of the tape recording medium decreases an error control movement of the tape recording medium. Claim 1. Device for controlling the movement of a tape recording medium, comprising a pulse counter, the control input of which is connected to the output of the pulse encoder of the angular position of the receiving coil, and the counting input with the output of the pulse encoder of the angular position of the feeding roller, the first digital-to-analog converter connected via the first the filter and the first amplifier with the electric motor of the receiving node, the second digital-to-analog converter connected through the second filter and the second amplifier with the electrode vigaletum, feed node, multipliers, sum-f j mators, mode switching unit, A wide decisive block, a switch and an input terminal for clock pulses, are different. so that, in order to reduce the control error, a logical programmer was added to it, connected via a switch to the output of the pulse counter and connected to the input of the TCH1FOROUS decisive block, the memorized table values connected to the outputs of the digital decisive block, js consecutive clock deviation counter and speed correction limiter, in succession a counter of position deviation counter and position correction limiter and connected in series dipstick measurement tensioner, made with a roller, coupled with a tape recording medium, a comparison unit with a reference level and a third filter connected to the inputs of the first and second amplifiers, a mode switching unit associated with the outputs of a speed limiter 7 76, a position correction limiter and the inputs of the first and second multipliers connected respectively to the first and second adders, the output of the pulse counter connected to the first table value storage unit connected through the second and third blocks Table of values with respectively the first and second adders and through the fourth and fifth blocks of storing tabular values with the first and second multipliers, respectively, the output of the pulse encoder of the angular position of the supply coil is connected to the position deviation counter and the clock deviation counter connected to the input clock pulses, the ratio of the number of pulses to the angle of rotation of the pulse sensor of the angular position of the receiving coil is less than the ratio of the number of pulses to the angle of rotation of the pulse sensor and the angular position of the feed coil. 2. Device pop. l, differing from the fact that a logical driver of directional signals was inserted into it, connected to the output of the pulse position sensor of the feed position and to the inputs of the first and second accumulators, with the pulse sensors of the angular positions of the receiving and feeding coils made in the form of tachometers. Sources of information received 6 attention during examination 1. German patent N 2213479, cl. 42d-18, otpublik. 1973.
    [2]
    2. Patent. Japan No. 52-9369, cl. 102 E 214.1, publ. 1977 (prototype).
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    同族专利:
    公开号 | 公开日
    US4125881A|1978-11-14|
    JPS5920178B2|1984-05-11|
    ES469977A1|1979-03-16|
    CA1097799A|1981-03-17|
    PT67931A|1978-05-01|
    PT67931B|1979-10-15|
    IL54435D0|1978-07-31|
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    DE2814376A1|1978-11-30|
    CH630196A5|1982-05-28|
    JPS53144307A|1978-12-15|
    GB1588908A|1981-04-29|
    FR2391528B1|1982-12-03|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/798,539|US4125881A|1977-05-19|1977-05-19|Tape motion control for reel-to-reel drive|
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