Timeline for How to tune a PID for a pure integrator system?
Current License: CC BY-SA 3.0
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| Aug 28, 2017 at 12:54 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Jul 29, 2017 at 12:48 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| S Jun 29, 2017 at 11:52 | history | suggested | user7083 | CC BY-SA 3.0 |
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| Jun 28, 2017 at 23:36 | review | Suggested edits | |||
| S Jun 29, 2017 at 11:52 | |||||
| Jun 28, 2017 at 12:41 | answer | added | kfb | timeline score: 2 | |
| Jun 22, 2017 at 13:49 | comment | added | SF. | To trim PID to pure integrator, P=0, I=1, D=0. But if you want to maintain water level, you're much better with a trivial cut-off / hysteresis regulator. Especially, that PID basing on integrator, wouldn't take level as input, but flux; estimating the water level by approximating amount in minus out. This accumulates error over time and is a really bad solution. | |
| Jun 22, 2017 at 12:46 | comment | added | kfb | This problem is actually a quite common one. If the details are provided I can happily help you. | |
| Jun 22, 2017 at 7:20 | comment | added | Pr. Giratina | Thanks for your answers, this migh be a dumb question but here it is. I'm trying to keep the water level in a tank at a given value by controlling the flow in, the input is the flow and the output is the level. i think that the level is related to the flow by : dL/dt = Q/A where Q is the flow and A the area of the tank. The transfer function is then TF=1/(A*s) How can i design a PID controller for the closed loop system? PS : excuse my bad english | |
| Jun 21, 2017 at 14:51 | comment | added | BarbalatsDilemma | Can you provide more information about what you're trying to accomplish, and what part is causing you trouble? Are you trying to design a PID controller, or are you trying to experimentally tune one? Is the plant model perfectly known (i.e. you know $K$)? | |
| Jun 21, 2017 at 8:41 | comment | added | kfb | Also, you can check these links: 1-Robotics , 2-Quora and 3-Quora, If the problem is satisfied, I can edit these solutions into answer to prevent link rot. (Also, you might need to edit the title, because PID stands for Proportional-Integral-Derivative, and in this case we need the tune only Integral controller.) | |
| Jun 21, 2017 at 7:56 | comment | added | kfb | Integrator-BodeD Integrators assumed to be phase shifted with -90 degrees. One can also achieve the response by combining multiple inputs on Bode Diagram, to see the Magnitude and Phase Shift of system. | |
| Jun 21, 2017 at 5:14 | history | asked | Pr. Giratina | CC BY-SA 3.0 |
