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A nonlinear robust state feedback controller is presented for the minimization of water level deviation in presence of disturbances in a one-reach open channel controlled by an underflow gate at the upstream end. To apply nonlinear robust control to this distributed parameter system, the original nonlinear partial differential equations (the Saint-Venant equations) were adopted without using neither...
Nonlinear intermodulation distortion inside duplexers is a limitation for the sensitivity of mobile devices receivers. A perturbation approach for non linear harmonic acoustic generation along the propagation of surface acoustic wave is derived. It is used to extend the P matrix model to non linear generation of harmonics and mixing products. Interface of the new model to harmonic balance simulators...
When conventional methods have become insufficient to handle computationally complicated problems, nature-inspired optimization methods were proposed and widely accepted in recent years. In this work, we investigate the trade-off between risk and return in a cardinality-constrained portfolio optimization problem and applied an artificial bee colony (ABC) method as the solution approach. It would be...
Ideal running performance requires that series-parallel hybrid electric vehicles smoothly transite between series and parallel operation modes. Clutches are widely applied to series-parallel hybrid electric vehicles to connect or disconnect powertrain components. Due to discontinuous nonlinear effect of clutch friction characteristics, smooth transition with little frictional dissipation is difficultly...
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