參數(shù)資料
      型號: SDC-14580-522Z
      廠商: DATA DEVICE CORP
      元件分類: 位置變換器
      英文描述: SYNCHRO OR RESOLVER TO DIGITAL CONVERTER, DIP36
      封裝: DDIP-36
      文件頁數(shù): 4/18頁
      文件大小: 202K
      代理商: SDC-14580-522Z
      12
      Data Device Corporation
      www.ddc-web.com
      SDC-14580
      H-05/04-0
      The error is positive if it is in phase with the reference and neg-
      ative if it is out of phase with the reference.
      The e output can swing ±10 V min with respect to ground when
      the voltage level of the ±15 V power supplies are 15 V. The out-
      put level range changes proportionally with the power supply
      level.
      INTERNAL DC REFERENCE VOLTAGE (V, PIN 1)
      This internal voltage is not required externally for normal opera-
      tion of the converter. It is used as the internal dc reference com-
      mon with the direct input option. It is nominally +5 V and is pro-
      portional to the +15 Vdc supply.
      VELOCITY (VEL, PIN 23)
      The velocity output (VEL, pin 23) is a dc voltage proportional to
      angular velocity d
      θ/dt. The velocity is the input to the voltage con-
      trolled oscillator (VCO), as shown in FIGURE 1. Its linearity and
      accuracy are dependent solely on the linearity and accuracy of
      the VCO.
      The VEL output can swing ±10 V with respect to ground when
      the voltage level of the ±15 V power supplies are 15 V. The out-
      put level range changes proportionally with the power supply
      level. The analog output VEL characteristics are listed in TABLES
      5 and 6.
      The VEL output has dc tachometer quality specifications such
      that it can be used as the velocity feedback in servo applications.
      VEL
      FILTERED
      91k
      VEL
      0.01 F
      τ = RC = 1/A
      FIGURE 17. VEL OUTPUT FILTER
      ERROR PROCESSOR
      INPUT
      θ
      Open Loop Transfer function = Output
      WHERE:
      2
      A = A A
      1
      2
      VELOCITY
      OUT
      DIGITAL
      POSITION
      OUT
      (
      φ)
      VCO
      CT
      S
      A
      + 1
      1
      B
      S
      + 1
      10B
      H = 1
      S
      A
      + 1
      1
      B
      2
      S
      + 1
      10B
      +
      -
      e
      A
      2
      S
      2.75
      -12
      db/oct
      4
      BA
      (BW)
      2A
      -6 db/oct
      10B
      ω (rad/sec)
      FIGURE 19. OPEN LOOP BODE PLOT
      FIGURE 18. TRANSFER FUNCTION BLOCK
      DIAGRAM
      2A
      2 2 A
      ω (rad/sec)
      CLOSED LOOP BW (Hz) =
      2 A
      π
      FIGURE 20. CLOSED LOOP BODE PLOT
      TABLE 7. DYNAMIC CHARACTERISTICS
      PARAMETER
      UNITS
      BANDWIDTH
      RESOLUTION
      BITS
      10
      12
      14
      16
      Input Freq.
      kHz
      1-5
      2-5
      Tracking Rate
      bandwidth
      Ka
      A1
      A2
      A
      B
      acc - 1 LSB lag
      Settling Time
      RPS min
      Hz
      1/sec2
      1/sec
      Deg/sec2
      ms max
      800
      540
      1.5M
      6.2
      200k
      1.2k
      600
      512k
      15
      200
      128k
      20
      50
      32k
      35
      12.5
      8k
      70
      ← Same as value to left
      OVERSHOOT
      SMALL SIGNAL
      SETTLING TIME
      MAX SLOPE EQUALS
      TRACKING RATE (SLEW RATE)
      θ/2
      θ/1
      FIGURE 21. RESPONSE TO A STEP INPUT
      Note: For 400 Hz and 60 Hz Reference frequencies, use SDC-14560 Series
      converters.
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