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The robust stabilization of a voltage-controlled three-pole active magnetic bearing (AMB) system is considered in this paper. The system could suffer both matched and mismatched uncertainties from a variety of sources such as unmodeled magnetic forces due to flux leakage and parametric uncertainties due to manufacturing and assembly errors. The system represents an interesting example that is not...
In this paper a robust chaotic control strategy for the chaotic atomic force microscope system (AFMs) via backstepping design is presented. The proposed feedback controller is composed by a sliding mode control (SMC) and a backstepping feedback, so its implementation is quite simple and can be made on the basis of the measured signal. The developed control scheme allows chaos suppression despite uncertainties...
This paper presents the design of a nonlinear rule based fuzzy logic controller for the nonlinear dynamic behavior of the probe tip of an atomic force microscope system (AFMs). At first, we use the bifurcation diagram to analysis the complex dynamic behavior of the atomic force microscope system. Next, the positive maximum Lyapunov exponent is obtained to identify that the chaotic motion do exist...
This paper is concerned with the robust chaos synchronization problem for coupled RCL-shunted Josephson junction (RCLSJ) models. The variable structure control (VSC) technique is introduced to propose a nonlinear controller such that the coupled RCLSJ models with different parameters can be synchronized even when the uncertainties are present. An example is included to illustrate the results developed...
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