Constrained pole placement for linear systems using low-order output feedback controllers
Trinh, Hieu, Nahavandi, Saeid and Fernando, T. 2002, Constrained pole placement for linear systems using low-order output feedback controllers, International journal of systems science, vol. 33, no. 3, pp. 165-173, doi: 10.1080/00207720110091730.
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Constrained pole placement for linear systems using low-order output feedback controllers
The paper presents a simple approach to the problem of designing low-order output feedback controllers for linear continuous systems. The controller can place all of the closed-loop poles within a circle, C(- , 1/ β) , with centre at - and radius of 1/ β in the left half s-plane. The design method is based on transformation of the original system and then applying the bounded-real-lemma to the transformed system. It is shown that subjected to the solvability of an algebraic Riccati equation (ARE), output feedback controllers can then be systematically derived. Furthermore, the order of the controller is low and equals only the number of the open-loop poles lying outside the circle. A step-by-step design algorithm is given. Numerical examples are given to illustrate the design method.
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