Ziegler-Nichols tuning rules don't quite match the original gains from the Ziegler-Nichols paper
From FBSwiki
| Edition | Second |
|---|---|
| Version number | 3.0j |
| Submission date | 31 Aug 2019 |
| Your name | Richard Murray |
| E-mail address | murray@cds.caltech.edu |
| Chapter | 11 |
| Page number | 11-12 |
| Line number | 8 |
| Current status | Closed |
The gains listed for the original Ziegler-Nichols tuning rules don't quite match what was in the original paper:
- For the step response method, the integral time constant for a PI controller should be T_i = \tau/0.3 (instead of 3 \tau).
- For the frequency response method, the proportional gain for a PI controller should be k_p = 0.45 k_c (instead of 0.4 k_c and the integral time constant should be T_i = T_c/1.2 (instead of 0.8 T_c).
These changes also impact the gains listed in the subsection on the improved Ziegler-Nichols tuning rules.
