北京锐志天宏科技股份有限公司
Beijing RichAuto S&T Co., Ltd
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Appendix 1. Pulse equivalent calculation
PS1.1 Stepper motor drive
PS1.1.1 Linear axis
Unit:Pul/mm
Formula = pulses per revolution / distance per revolution
Numerator:
Pulses per revolution formula: (360 °/stepper angle* Driver subdivision)
(Some stepper drivers mark pulse number directly).
Denominator:
Distance/revolution formula:
►
Screw drive
=
screw pitch*mechanical transmission ratio(reduction ratio)
►
Rack
(
straight
)
drive = rack module*gear teeth number*π*mechanical transmission
ratio (reduction ratio)
►
Rack
(
helical
)
drive = rack
module*gear teeth number*π*mechanical transmission
ratio(reduction ratio)/cos
►
Pulley & belt drive = π*pulley diameter*mechanical transmission ratio(reduction ratio)
Screw drive
:
pulse =
360
°
Stepper angle
∗Driver subdivision
Screw pitch∗transmission ratio
E.g.1: Driver nameplate1 E.g.2:Driver nameplate2 Motor nameplate/ stepper angle=1.8°
Explain:
Stepper angle is the data of motor, means the angle of motor rotating for a single
step. Driver subdivision is set in the driver.