- #1
ABDUL HASEEB ARIF
- 1
- 0
can we add two pid controllers like i have done in my model.thanks
Is my model a correct one -- adding two pid controllers
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Adding two PID controllers to a model is possible, but it may not achieve the desired outcome. The primary function of a PID controller is to eliminate the input error signal, and having two controllers may lead to conflicting outputs that prevent both errors from reaching zero simultaneously. This can result in the controllers continuously adjusting without success. Instead, it's recommended to focus on the process equations to address both error signals effectively. Proper design should prioritize resolving the errors rather than simply adding more controllers.
- #2
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You can but it probably won't do what you want. The purpose of a PID (or a PI) is to make the input error signal go to zero. Unless the process is unusual, there is not value of the sum of the two PID outputs that makes both errors go to zero at the same time. If they don't, the PIDs will keep searching and will fail.
Design your layout this way. You have two error signals. Write the equations of the process (not the controllers) needed to make both go to zero.
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The drawing on the box led me to believe that it would accept a standard IEC cord which surprised me. But it's a variation of it. I didn't try it, but I would assume you could plug a standard IEC cord into this and have a double male cord AKA suicide cord. And to boot, it's likely going to reverse the hot and...
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