Show the schematic.Hello i am designing a PID control temperature project , but with the integrator effect , the PID seems to be continuing to function even at set temperature , can you please tell me how you fixed that problem ?
Your statement is confusing.Hello i am designing a PID control temperature project , but with the integrator effect , the PID seems to be continuing to function even at set temperature , can you please tell me how you fixed that problem ?
HelloYour statement is confusing.
When you say "the PID seems to be continuing to function" that means to me that the "PID is working".
Or did you mean to say the the "controller continues to raise the temperature"?
Note that for a simple temperature controller you do not necessarily required PID control. PI control (i.e. without D) will often work well.
If the PID controller keeps on operating after the set temperature is attained that is what it is supposed to do, isn't it?* I mean that the controller keeps on operating after the set temperature !!
No because , the PID is a temperature control pid and i set it to 37 deg but when it reaches 37 deg , because of the integrator , it keeps heating and then the integrator starts going negative until it reaches the set temp, but it takes some timeIf the PID controller keeps on operating after the set temperature is attained that is what it is supposed to do, isn't it?
I do not understand what is the problem.No because , the PID is a temperature control pid and i set it to 37 deg but when it reaches 37 deg , because of the integrator , it keeps heating and then the integrator starts going negative until it reaches the set temp, but it takes some time
Then you integrator time constant is perhaps not correct.the PID is a temperature control pid and i set it to 37 deg but when it reaches 37 deg , because of the integrator , it keeps heating and then the integrator starts going negative until it reaches the set temp, but it takes some time
I do not understand what is the problem.
The purpose of the integrator is to remove the error between the set value and the actual value. If the integration is negative the controller turns off in order to bring the error towards zero. If the integration is positive the controller turns on the power to raise the temperature. That is my concept of how a PID controller works. I could be wrong.
It may take some time for the temperature to fall if there is no active way of removing the heat.
what is an integrator time(like in a bit technical but also simple way ? )Then you integrator time constant is perhaps not correct.
You many also need more D to stabilize the loop.
The time-constant is the integrator value of R times the integrator value of C.what is an integrator time(like in a bit technical but also simple way ? )
by Steve Arar
by Steve Arar
by Jake Hertz
by Jake Hertz