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In this paper, we present the structure and design of an air bearing stage. First, a spherical air bearing system (SABS) is introduced in the alignment of nano-imprinting. Secondly, the eddy current is used to control the SABS over-coming the frictionless motion. Thirdly, an adaptive algorithm is designed for estimating the unknown model parameters. Finally, an experimental platform is setup and the...
The problems of synchronization and control of Duffing's system with uncertain parameters are considered in this paper. To solve these problems, we introduce the vector of adjustable parameters in the control law instead of the unknown parameters. Furthermore, we give the theoretical proofs to show the controlled goal can be achieved using the presented control law. Several simulation examples also...
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