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A control scheme is presented to achieve stabilization, satisfactory dynamic and steady state control performance for a general unstable process with dead time, where the rational function part of the process could be of non first order and the dead time of it larger than the upper bound for stabilization by PID control. The idea is to remove the stable lag part of the process by an internal model...
A simple PID tuning method for dominant pole placement and phase margin specification is proposed in this paper. Time domain specifications as settling time and percentage overshoot are represented by a pair of dominant poles, which is combined with phase margin specification to achieve closed-loop stability and robustness. A graphical method is developed to determine PID settings to meet these specifications...
In this paper, a simple framework for PID controller design is presented which leads to the important popular setting, Ti=4T d. This setting first appeared in the Ziegler and Nichols tuning and has been widely adopted so far. The framework also provides analytical PID tuning formulas with improved performance over the ZN tuning
An improved iterative linear matrix inequality (ILMI) algorithm for static output feedback (SOF) stabilization problem without introducing any additional variables is proposed in this note. The proposed ILMI algorithm is also extended to solve the SOF Hinfin controller design problem. They are applied to the multivariable PID controllers. Numerical examples show that the proposed algorithms yield...
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