(15C) ZieglerNichols PID tuning

08222014, 01:43 AM
(This post was last modified: 06152017 01:31 PM by Gene.)
Post: #1




(15C) ZieglerNichols PID tuning
ZieglerNichols Proportional Integral Deriviative controller tuning program for the HP15C. PID controllers are commonly used in industry to provide feedback for a process.
LBL A STO 0 ROLL DN STO 1 ROLL DN STO I GTO I LBL 1 RCL 1 2 / RTN LBL2 RCL 1 . 4 5 * ENTER 1.2 * RCL 0 / X<>Y RTN LBL 3 RCL 1 . 6 * STO 3 2 * RCL 0 / ENTER RCL 3 * 8 / X<>Y RCL 3 RTN INPUT: T Z type of loop: 1=Proportional only; 2=Proportional Integral; 3=Proportional Integral Derivative Y Ku X Pu OUTPUT: T Z Kd Y Ki X Kp Increase P only on the PID controller until the output of the loop begins to oscillate: this number is "Ku". "Pu" is the period of that oscillation. EXAMPLE We want a PI loop type 2. Ku is 5, period of oscillation is 1 min. 2 ENTER 5 ENTER 1 f A Result: T Z Y 2.7 X 2 Set your controller to proportional, 2; integral, 2.7 EXAMPLE We want a PID loop type 3. Ku is 2.5, period of oscillation is 50 sec= 5/6 min. 3 ENTER 2.5 ENTER .83 f A Result: T Z .67 Y 3 X 1.5 Set your controller to proportional, 1.5; integral, 3; derivative, .67 

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