Mitsumi electronic IB-1500875(ENG)-E ユーザーズマニュアル

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The phenomenon when the machine position goes past or exceeds the command during feed stopping is 

called overshooting.

In OVS compensation, the overshooting is suppressed by subtracting the torque command set in the 

parameters when the motor stops.

The shape of the machine end during high-speed and high-speed acceleration operation is compensated by 

compensating the spring effect from the machine end to the motor end.

The shape may be fine during low-speed operation. However, at high speeds, the section from the machine 

end to the outer sides could swell. This function compensates that phenomenon.

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Position 

command

Position 

droop

Time

Overshoot

Speed 
FB

Position 

droop

Time

Overshoot

[1] Overshooting during rapid traverse settling

[2] Overshooting during pulse feed

Compensation

Electric end FB

Machine end FB

Electric end FB

Normal control

Machine end FB

Machine end compensation

Electric end FB

Machine end FB

Spindle head

Program path

Command is issued 
in the inner side 
during high-speed 
feed.

During  high-speed 
feed, the machine end 
swells outward due to 
the spring effect.

Since a command is 
issued in the inner side 
by the amount of spring 
effect, the shape keeps 
fine even during the 
high-speed feed.