Design of a Robust H∞ Controller for a Magnetic Levitation System
The magnetic levitation system is nonlinear and inherently unstable. In order to improve its anti-interference performance and its loading capacity, a robust H∞ controller is designed based on the H∞ theory. The selection of the weighting function matrix is discussed for both the sensitivity and the complementary sensitivity of the H∞ controller. Simulation and experimental results show that the H∞ controller works effectively with excellent precision and robustness.
Riza Esa and Yanwen Wu
G. Zhang and J. Li, "Design of a Robust H∞ Controller for a Magnetic Levitation System", Advanced Materials Research, Vols. 301-303, pp. 1356-1362, 2011