Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
700549 | Control Engineering Practice | 2009 | 9 Pages |
Abstract
Electromagnetic suspension systems are inherently nonlinear and often face hardware limitation when digitally controlled. The main contributions of this paper are: the design of a nonlinear H∞H∞ controller, including dynamic weighting functions, applied to a large gap electromagnetic suspension system and the presentation of a procedure to implement this controller on a fixed-point DSP, through a methodology able to translate a floating-point algorithm into a fixed-point algorithm by using l∞l∞ norm minimization due to conversion error. Experimental results are also presented, in which the performance of the nonlinear controller is evaluated specifically in the initial suspension phase.
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Physical Sciences and Engineering
Engineering
Aerospace Engineering
Authors
Paulo H. da Rocha, Henrique C. Ferreira, Michael C. Porsch, Roberto M. Sales,