PI Controller Reset function
Verfasst: Montag 27. März 2017, 15:18
Hi All,
Please I need your help with the PI Controller,As shown in the attached sketch I have my set point signal and the feed back signal with the KP and KI parts the output goes into a limiter that sets me the max and minimum outputs for the controller.
This functions however my problem is how to reset the integrator ,my understanding from the help file is the reset pin reset the integrator and by adding a pulse generator to the RST pin with a rate at 1 sec I can see the output go higher and at 1 second fall back to the original value however in the real system this is a problem as the actuator would move to try and correct the error but when the integrator is resetted it falls back even with not correcting the error,I need the actuator to keep on moving to correct the error until max is reached and then stay there if the error remains or when the error get smaller and even 0 then the integrator should reset,
How can I achieve this in PL I appreciate all help highly
Kind Regards
Please I need your help with the PI Controller,As shown in the attached sketch I have my set point signal and the feed back signal with the KP and KI parts the output goes into a limiter that sets me the max and minimum outputs for the controller.
This functions however my problem is how to reset the integrator ,my understanding from the help file is the reset pin reset the integrator and by adding a pulse generator to the RST pin with a rate at 1 sec I can see the output go higher and at 1 second fall back to the original value however in the real system this is a problem as the actuator would move to try and correct the error but when the integrator is resetted it falls back even with not correcting the error,I need the actuator to keep on moving to correct the error until max is reached and then stay there if the error remains or when the error get smaller and even 0 then the integrator should reset,
How can I achieve this in PL I appreciate all help highly
Kind Regards