Sharp CP-SR421 User Manual Page 355

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16. FULLY CLOSED LOOP SYSTEM (available in the future)
16 - 18
(a) When using a linear encoder (unit setting: mm)
ᓸಽ
AP
AL
ࠨ࡯ࡏࡕ࡯࠲ ࡝࠾ࠕࠛࡦࠦ࡯
૏⟎ࡈࠖ࡯࠼ࡃ࠶ࠢ
[mm]
ᜰ઎
[mm]
+
-
ㅦᐲࡈࠖ࡯࠼ࡃ࠶ࠢ
[r/min]
AL
AP
㔚ሶࠡࠕ
࡙࡯ࠩ ࡦ࠻ࡠ࡯࡜ ࠨ࡯ࡏࠕࡦࡊ
ᯏ᪾┵ಽ⸃⢻න૏
ᯏ᪾┵ಽ⸃⢻න૏
ࠨ࡯ࡏࡕ࡯࠲ㅦᐲ
Calculate the number of pulses (AP) and travel distance (AL) of the linear encoder per ball screw
revolution in the following conditions.
Ball screw lead: 20 mm
Linear encoder resolution: 0.05 μm
Number of linear encoder pulses (AP) per ball screw revolution
= Ball screw lead/linear encoder resolution= 20 mm/0.05 μm = 400000 pulses
1࿁ォ޽ߚࠅߩࡄ࡞ࠬᢙ[pulse](AP)
1
࿁ォ޽ߚࠅߩ⒖േ㊂[μm](AL)
=
400000pulses
20mm
=
400000
20000
(b) When using a rotary encoder (unit setting: deg)
ࠨ࡯ࡏࡕ࡯࠲
ࡠ࡯࠲࡝ࠛࡦࠦ࡯࠳
(HG-KR߹ߚߪHG-MRࠨ࡯ࡏࡕ࡯࠲)
4194304pulses/rev
AP
AL
૏⟎ࡈࠖ࡯࠼ࡃ࠶ࠢ
[deg]
ᜰ઎
[deg]
+
-
ㅦᐲࡈࠖ࡯࠼ࡃ࠶ࠢ
[r/min]
AL
AP
㔚ሶࠡࠕ
࡙࡯ࠩ ࠦࡦ࠻ࡠ࡯࡜ ࠨ࡯ࡏࠕࡦࡊ
ᯏ᪾┵ಽ⸃⢻න૏
ᯏ᪾┵ಽ⸃⢻න૏
ࠨ࡯ࡏࡕ࡯࠲ㅦᐲ
ᓸಽ
Calculate the number of pulses (AP) and travel distance (AL) of the rotary encoder per servo motor
revolution in the following conditions.
Resolution of rotary encoder = Load-side resolution: 4194304 pulses/rev
1࿁ォ޽ߚࠅߩࡄ࡞ࠬᢙ[pulse](AP)
1
࿁ォ޽ߚࠅߩ⒖േ㊂[deg](AL)
=
4194304pulses
360deg
=
524288
45
Load-side encoder resolution unit
Servo amplifier
Servo motor
Linear encoder
Electronic
gear
User
Controller
Command
Position feedback
Differen
-tiation
Load-side encoder resolution unit
Servo motor s
p
eed
Speed feedback
Number of pulses per revolution [pulse] (AP)
Travel distance per revolution [ȝm] (AL)
Load-side encoder resolution unit
Controller
User
Command
Position feedback
Speed feedback
Load-side encoder resolution unit
Servo motor s
p
eed
Differen
-tiation
Electronic
gear
Servo motor
Rotary encoder
(HG-KR or HG-MR servo motor)
4194304 pulses/rev
Number of pulses per revolution [pulse] (AP)
Travel distance per revolution [deg] (AL)
Servo amplifier
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