[size=medium]Translated from chinese
PID commissioning general principles[/size]
(a) the output is not oscillating, increase the proportional gain P
(b) the output oscillation, reducing the integration time constant of Ti.
(c) the output is not oscillating, increase the differential time constant Td.
The general steps
(a) to determine the proportional gain P
To determine the proportional gain P, first remove the PID integral and differential, are generally Ti = 0 and Td = 0 (See the PID parameter setting instructions), PID pure proportional adjustment. Enter the settings for the system to allow a maximum of 60% to 70%, by the gradual increase in the proportional gain P, until the system oscillations; and then, in turn, gradually decreases until the system oscillations disappear at this time, the proportional gain P, record the proportional gain P, set the PID proportional gain P is the current value of 60% to 70%. Proportional gain P debugging completed.
(b) to determine the integration time constant Ti
The proportional gain P is determined, set the initial value of a large integration time constant Ti, and then gradually decreases Ti, until the system oscillations, in turn, the gradual increase of Ti, until the system oscillations disappear. Record Ti, set the PID integral time constant Ti is the current value of 150% to 180%. Integration time constant Ti commissioning completed.
(c) to determine the integration time constant Td
Integration time constant Td is generally not set to 0. To set up, with the same method to determine the P and Ti, 30% of the time not get oscillation.
(d) the system with no load, load the FBI, to fine-tune the PID parameters until you meet the requirements.
PID commissioning general principles[/size]
(a) the output is not oscillating, increase the proportional gain P
(b) the output oscillation, reducing the integration time constant of Ti.
(c) the output is not oscillating, increase the differential time constant Td.
The general steps
(a) to determine the proportional gain P
To determine the proportional gain P, first remove the PID integral and differential, are generally Ti = 0 and Td = 0 (See the PID parameter setting instructions), PID pure proportional adjustment. Enter the settings for the system to allow a maximum of 60% to 70%, by the gradual increase in the proportional gain P, until the system oscillations; and then, in turn, gradually decreases until the system oscillations disappear at this time, the proportional gain P, record the proportional gain P, set the PID proportional gain P is the current value of 60% to 70%. Proportional gain P debugging completed.
(b) to determine the integration time constant Ti
The proportional gain P is determined, set the initial value of a large integration time constant Ti, and then gradually decreases Ti, until the system oscillations, in turn, the gradual increase of Ti, until the system oscillations disappear. Record Ti, set the PID integral time constant Ti is the current value of 150% to 180%. Integration time constant Ti commissioning completed.
(c) to determine the integration time constant Td
Integration time constant Td is generally not set to 0. To set up, with the same method to determine the P and Ti, 30% of the time not get oscillation.
(d) the system with no load, load the FBI, to fine-tune the PID parameters until you meet the requirements.
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