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4.3.2 Fine-tuning the speed loop
Before selecting the servo (position) loop gains, the speed loop gains might need to be fine tuned.
Note: MCT will have created starting values for the speed loop gains, so if you are not sure
which values to adjust, you can go straight to section 4.3.3 on page 57.
If you wish to c hange any of the speed loop gains:
1. Click the Speed Loop Tuning tab
2. The Speed Loop Tuning Parameters frame shows the
values of the terms.
3. MCT will have calculated s uitable values during the
coarse tuning tests. However, in some systems you
may achieve better results using the theoretical
valueforKIPROP.Todothis,click<-Calculate.
The Calculate Current Proportional Gain dialog box
will appear.
Click Use this value to use the theoretical value.
The following information s hould be considered if you change any of the speed loop parameters.
The value for Current Integral gain (KIINT) is preset to 50Hz. This setting is suitable for almost every
system and should not need be changed.
The value for Speed Proportional gain (KVPROP) is set to a default value of 4. This gain may be
increased or decreased to suit the application. Increasing KVPROP will result in a faster response, but
excessive values will cause overshoot and oscillation.
The value for Speed Integral gain (KVINT) is set to a default value of 1 and should not be adjusted
unless you are an experienced user.
The value for Speed Differential gain (KVDIFF) has no effect on the MintDrive.
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