Closed-Loop PI/PID Controller Tuning for Stable and Integrating Process with Time Delay

2013 ◽  
Vol 52 (36) ◽  
pp. 12973-12992 ◽  
Author(s):  
Mohammad Shamsuzzoha
Keyword(s):  
Time Delay ◽  
Pid Controller ◽  
Closed Loop ◽  
Controller Tuning ◽  
Pid Controller Tuning ◽  
Integrating Process

Robust and Effective PID Controller Identification for Delay Dominant Systems

2014 ◽  
Vol 625 ◽  
pp. 478-481
Author(s):  
Lemma Dendena Tufa ◽  
Marappagounder Ramasamy
Keyword(s):  
Time Delay ◽  
Time Constant ◽  
Pid Controller ◽  
Internal Model ◽  
Control Structure ◽  
Internal Model Control ◽  
Controller Tuning ◽  
Model Control ◽  
Pid Controller Tuning ◽  
Improved Performance

A novel PID controller identification method based on internal model control structure is proposed. The proposed method avoids the necessity of approximating the time delay for designing the PID controller. It results in a robust and effective PID controller tuning. The method is effective for both time constant and time delay dominant systems, with much improved performance for the latter case.

scholarly journals Closed Loop Tuning of Cascade Controllers Based on Setpoint Experiment

2020 ◽  
Vol 8 (4) ◽  
Author(s):  
Mohammad Atif Siddiqui ◽  
◽  
MN Anwar ◽  
SH Laskar ◽  
M Shamsuzzoha ◽  
...  
Keyword(s):  
Pid Controller ◽  
Closed Loop ◽  
Cascade Control ◽  
Peak Time ◽  
Process Data ◽  
Controller Tuning ◽  
Output Change ◽  
Pid Controller Tuning ◽  
Control Configuration ◽  
Loop Tuning

This study presents online PI/PID controller tuning rules for cascade control configuration. The necessary process data are determined with the help of a simple setpoint experiment in a single closed-loop mode with the proportional controller only. The obtained process data is recorded in terms of the overshoot, controller gain, peak time, and relative output change. The data is then utilized to establish a correlation with PI/PID settings through simulations. Further, the proposed PI/PID controller tuning rule for a single loop has been extended to the cascade control configuration. The inner loop controller is tuned first, and then the primary loop is tuned by considering a well-tuned inner loop as a part of the primary plant. Finally, simulation examples demonstrate that the proposed method delivers significant disturbance rejection and better setpoint response when compared to the recently reported methods from the literature. The proposed method is also able to deliver stable closed-loop performances when subjected to large parametric uncertainties and measurement noise.

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