Project - Servo Motor Tuning on K2CNC Router Table
Problem is Oscillating Servo Motors.

K2CNC Made the CNC Router, the original manufacture has gone out of business.
It uses Mach3 as the control program.
The table runs well cutting parts but when it comes to a stop the motors start jumping back and forth getting progressively more and more violent.
The theory is that the P gain needs to be reduced, could be the Intergral gain too.
Initial goal is to find and learn how to use the software to set the PID gains for the servo motor drivers.

Dynomotion KFLOP Download

Includes: Kmotion Executive Application - Configure/Program/Tune the KFLOP Motion Controller

Kmotion.exe is used to configure the axis. DynoMotion Software Description

Configuring the Software

Tuning the Servo



P - Proportional Gain is how much power is applied to bring the motor back to zero. This feels like the force increases the further off zero. If I Gain is zero the resisting force off center will be constant in proportion to how far the motor is off center.

I - Integral Gain is a running sum of how far off zero it is. This causes the force to build up over time. Moving the motor off zero is resisted by the P Gain where the resisting force is increased as time goes by until maximum force is applied, the rate of the building of the resisting force is set by the I Gain parameter.

D - Derivative Gain is the force that resists quick changes. If P and I Gains are zero you can feel the effect of the D gain by quickly moving the shaft of the motor. With zero D Gain there is no resistance to quick moves, as the D Gain is increased you can feel the resistance to quick moves increase as the D Gain increases.


Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC

Servo Motor Tuning K2CNC


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Published 7/6/2017 4:28:05 PM
Copyright 2016 Dennis Bohlke