16. FULLY CLOSED LOOP SYSTEM
16 - 18
(a) When using a linear encoder (unit setting: mm)
Differentiation
AP
AL
Servo motor
Linear encoder
Position feedback
[mm]
Command
[mm]
+
-
Speed feedback
[r/min]
AL
AP
Electronic
gear
User
Control
Servo amplifier
Load-side encoder resolution unit
Load-side encoder
resolution unit
Servo motor speed
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
Number of pulses per revolution [pulse] (AP)
Travel distance per revolution [µm] (AL)
=
400000 pulses
20 mm
=
400000
20000
(b) When using a rotary encoder (unit setting: degree)
Servo motor
Rotary encoder
(HG-KR or HG-MR servo motor)
4194304 pulses/rev
AP
AL
Position feedback
[degree]
Command
[degree]
+
-
Speed feedback
[r/min]
AL
AP
Electronic
gear
User
Control
Servo amplifier
Load-side encoder resolution unit
Load-side encoder
resolution unit
Servo motor speed
Differentiation
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
Number of pulses per revolution [pulse] (AP)
Travel distance per revolution [degree] (AL)
=
4194304 pulses
360 degrees
=
524288
45
Содержание MR-J4W2-0303B6
Страница 17: ...8 App 16 Status of general purpose AC servo products for compliance with the China RoHS directive App 58 ...
Страница 39: ...2 INSTALLATION 2 8 MEMO ...
Страница 97: ...4 STARTUP 4 20 MEMO ...
Страница 181: ...6 NORMAL GAIN ADJUSTMENT 6 28 MEMO ...
Страница 235: ...9 DIMENSIONS 9 6 MEMO ...
Страница 245: ...10 CHARACTERISTICS 10 10 MEMO ...
Страница 309: ...13 USING STO FUNCTION 13 14 MEMO ...
Страница 365: ...15 USING A DIRECT DRIVE MOTOR 15 24 MEMO ...
Страница 389: ...16 FULLY CLOSED LOOP SYSTEM 16 24 MEMO ...
Страница 461: ...17 APPLICATION OF FUNCTIONS 17 72 MEMO ...
Страница 556: ...APPENDIX App 41 ...
Страница 585: ...MEMO ...