Hello,
I don't know that we have enough information to effectively assist you, but here are some documents that discuss PID control. Are you actually using the LabVIEW PID toolkit?
PID Theory Explained
Wikipedia: PID controller Look at the table that discusses the effects of increases in the different constants. I have copied it below for completeness.
| Effects of increasing parameters |
| Parameter |
Rise Time |
Overshoot |
Settling Time |
S.S. Error |
| Kp |
Decrease |
Increase |
Small Change |
Decrease |
| Ki |
Decrease |
Increase |
Increase |
Eliminate |
| Kd |
Small Change |
Decrease |
Decrease |
None |
Good luck!
Janell R | applications engineer
