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An alternating-direction implicit finite-difference time-domain (FDTD) algorithm is applied to the full wave analysis of microwave integrated circuit devices. A 3-D multidomain method is developed in nonorthogonal coordinates. Nonorthogonal grids are only used for the anomalistic regions of a complex structure, whereas the standard FDTD lattice is used for the other regions. By using the Jacobian...
Control of smart actuators is limited due to strong hysteresis effects which affect the accuracy of these actuators in micropositioning applications. In this paper, generalized Prandtl-Ishlinskii hysteresis model and its inverse are presented to characterize and to compensate hysteresis effects in smart actuators, where a generalized symmetric play operator is adopted to form the generalized Prandtl-Ishlinskii...
Artificial prosthetic groups, HeminD1 and HeminD2, were designed and synthesized, which contain one benzene ring and one carboxylic group or two carboxylic groups at the terminal of each propionate side chain of hemin, respectively. HeminD1 and HeminD2 were reconstituted with apo-HRP successfully to produce the two novel HRPs, rHRP1 and rHRP2, respectively. The thermal and solvent tolerances of native...
For the nonlinear systems preceded by smart actuators which exhibit hysteresis nonlinearities, the increasing attention is to design the controller to mitigate the effect of hysteresis. Among the developed approaches, some attempts have been made to fuse the available hysteresis models with available control approaches without the inverse hysteresis construction. Focusing on the Prandtl-Ishlinskii...
This paper illustrates the application of the alternating direction implicit (ADI) pseudospectral time-domain (PSTD) simulator to full-wave analyzing of dielectric resonator antennas (DRA's). The multi-mode DRA's have been investigated, and the multidomain strategy is employed to allow for a flexible treatment of internal inhomogeneities. Numerical results demonstrate the unconditional stability and...
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