Disturbance Rejection with Highly Oscillating Second-order-like Process, Part V: 2DOF PID-PI Controller | |
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( Volume 1 Issue 3,September 2015 ) OPEN ACCESS | |
Author(s): | |
Galal Ali Hassaan | |
Abstract: | |
The use of a 2DOF PID-PI controller for disturbance rejection of one of the difficult processes having highly oscillating characteristic with maximum overshoot of above 85 % is investigated. The proposed controller has five parameters reduced to three to be adjusted to produce successful disturbance rejection. The controller is tuned using MATLAB control and optimization toolboxes through using five error-based objective functions. To examine the effectiveness of the proposed compensator, it is compared with three controllers investigated before to control the same process. The proposed controller can compete well with the PD-PI and PI-PD controllers. It can generate time response to unit step disturbance input with maximum value as low as 0.97 x 10-4. |
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