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(2) Rotary operation

The following describes rotary operation by positioning such as below a stepping motor.

: Angle of rotation per pulse (angle/pulse → deg/p)

Rotary pulse coefficient, number of pulses per rotation (number of pulses/single motor rotation → p/rotation)

: Rotation pulse rate coefficient (number of pulses/single rotation of shaft → p/rotation)

m : Reduction gear ratio → number of teeth of gear A/number of teeth of gear B)

: Shaft rotation speed (number of rotations/sec → rps)

: Set pulse speed (speed to set to this module, number of pulses/sec → p/s)

R : Shaft rpm (rpm)

: Number of set travel pulses

The rotary pulse coefficient is calculated:

=360/ (number of pulses/rpm → p/rotation)

Shaft

Gear B

Gear A

Stepping motor

Thus, the pulse rate coefficient becomes:

= m=360×m/ (p/rotation)

Next, the pulse speed VP (speed to set to this module) when the table travel speed Vr (rps) is

generated from this coefficient:

=Vr =Vr×360×m/ (p/s)

The number of pulses (PL) for arriving at the set rpm is calculated as follows:

=R× =R×(360×m/ ) (p)

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