| ??? 03/13/07 15:51 Read: times |
#134870 - It's a control theory thing ... Responding to: ???'s previous message |
Motor speed and control signal are somewhat effectively out of sych?
Essentially, it means that the integral coefficient of your PID controller might be to high. Integrating parts of controllers integrate the difference signal at the input. If the difference is positive or negative for too long, the integral might become extremely large and a) cause an overshoot, and if it is still too large b) cause the controller to oscillate or ultimately become unstable. There are several ways around this, such as reducing the integral coefficient or limiting the value that the integrator can reach. Each of these comes with different drawbacks. |
| Topic | Author | Date |
| Ideas on PID motor | 01/01/70 00:00 | |
| clarify | 01/01/70 00:00 | |
| trigger on input capture | 01/01/70 00:00 | |
| p-I-d | 01/01/70 00:00 | |
| do you mean | 01/01/70 00:00 | |
It's a control theory thing ... | 01/01/70 00:00 | |
| sounds like noise to me | 01/01/70 00:00 | |
| capturing PWM waveform | 01/01/70 00:00 | |
| what is that PWM generated by???? | 01/01/70 00:00 | |
| by motor hall sensors | 01/01/70 00:00 | |
| put a scope on the hall sensor input, is it "spark | 01/01/70 00:00 | |
| looks clean, a little spark i suppose | 01/01/70 00:00 | |
| that depends | 01/01/70 00:00 |