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Research the accurate detecting problems of automobile temperature sensor. For automobile temperature structure is complex and work under the conditions of high temperature and pressure, the conventional sensor faulted detection method is subjected to modeling error and external interference, which causes an improper diagnosis. In order to improve the detection accuracy, this paper put forward a fault...
This paper has presented a numerical algorithm for reconstructing CT TF models of systems with pure integrators from their ZOH DT equivalents. The algorithm used basic recursion and simple polynomial manipulations and is well suited for CACSD software. The algorithm performs the reconstruction solely in the frequency-domain; hence avoids intermediate unnecessary steps of realizing the TF in SS and...
This paper is focused on the development of an effective method to optimization inversion on constitutive model parameters of bird material in the numerical simulation of bird impact on an aircraft windshield. The experiments of bird impact on a plate under the velocity of 170m/s were performed and the displacements as well as the strains of the plate were measured. The Murnaghan Equation of State...
The phase field method is an effective method on solidification microstructure simulation. In this paper, the basic principles and the phase field model are introduced respectively. And then, the applications of phase-field simulation on solidification microstructure are summarized briefly. Finally, the problems to be faced and the future development trends are pointed out in this area.
Small watershed dominates the relief at hillslope scale of red soil. The soil hydraulic properties are essential in unsaturated zone modeling. In order to study the impact of soil hydraulic parameters on simulated moisture in the region of low hilly area and to develop water-saving agriculture along gentle slope upland in northeast Jiangxi Province, the numerical modeling of soil moisture along the...
This paper presents dynamic modeling for cross-spring pivots, based on the Beam Constraint Model (BCM) and Lagrangian method. The effect of vertical force is included in this model. The first natural frequency of the cross-spring pivot under vertical force is derived. The effects on the first natural frequency imposed by manufacturing errors are studied. The model predictions of the first natural...
Using the WRF model and NCEP data, a typical winter sea-land breeze progress in China tropical island was simulated, analyzing the impact of wind field simulation with the horizontal resolution, analog range, nesting level, and analog time. The results showed: the simulate effects of the WRF model could not always keep step with the increase of horizontal resolution. Obviously there was a threshold...
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