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slice:qt [2019/03/12 22:36] – [System Settings] Michael Radunsky | slice:qt [2019/04/02 15:46] – [Channel Settings] Michael Radunsky |
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<imgcaption PID|Screen for adjusting PID parameters for individual channel>{{ :slice:slice-qt_ch_1_pid_param_screen_set_p_gain.jpg?400x254 |}}</imgcaption> | <imgcaption PID|Screen for adjusting PID parameters for individual channel>{{ :slice:slice-qt_ch_1_pid_param_screen_set_p_gain.jpg?400x254 |}}</imgcaption> |
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To set the PID loop filter parameters from the Home screen, select CH X > Settings > PID Params and the screen in <imgref PID> will appear. The parameters for the PID loop filter are set in this popup screen. These parameters control the closed-loop behavior of the feedback. Each of these parameters will need to be tuned specifically for your plant. There is an option to enable or disable each parameter in the loop filter. There are a number of methods to tune a loop. We recommend the Ziegler-Nichols method.((A usable discussion of the Ziegler-Nichols method can be found here: http://faculty.mercer.edu/jenkins_he/documents/TuningforPIDControllers.pdf)) | To set the PID loop filter parameters from the Home screen, select CH X > Settings > PID Params and the screen in <imgref PID> will appear. The parameters for the PID loop filter are set in this popup screen. These parameters control the closed-loop behavior of the feedback. Each of these parameters will need to be tuned specifically for your plant. There is an option to enable or disable each parameter in the loop filter. There are a number of methods to tune a loop. We recommend the Ziegler-Nichols method.(([[https://staff.guilan.ac.ir/staff/users/chaibakhsh/fckeditor_repo/file/documents/Optimum%20Settings%20for%20Automatic%20Controllers%20(Ziegler%20and%20Nichols,%201942).pdf|Optimum Settings for Automatic Controllers, by J.G. Zieger and N. B. Nichols]] and\\ |
| [[https://en.wikipedia.org/wiki/Ziegler%E2%80%93Nichols_method|Wikipedia]])) [[Z-N|Instructions on using this method can be found here]]. |
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== Slew Rate Limit == | == Slew Rate Limit == |
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<WRAP center round box 60%><tabcaption set_param |Setting loop parameters> | <WRAP center round box 60%><tabcaption set_param |Setting loop parameters> |
| **Setpoint** | ºC | Sets the setpoint temperature of the plant. | | | **Setpoint** | °C | Sets the setpoint temperature of the plant. | |
| **Proportional** | V/V | Sets the proportional gain of the loop filter. | | | **Proportional** | V/V | Sets the proportional gain of the loop filter. | |
| **Integral** | sec | Sets the integral time constant of the loop filter. | | | **Integral** | sec | Sets the integral time constant of the loop filter. | |