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In this paper, an indirect decoupling method is established to simulate the physical process of an electromagnetic launch considering electromagnetic force, thermo-softening of metallic material, and melting interface layer effects. The dynamic responses of cambered surface rail and armature under electromagnetic and thermal loads are analyzed and a simulation method is provided for the engineering...
HVDC technology is increasingly adopted for long distance transmission of bulk power at reduced cost in comparison with HVAC systems. Epoxy is a popular material for insulators/spacers used in sealed space such as in GIS or wall bushings with selected fillers, providing excellent electrical insulation and mechanical support. Practical operation and previous research [1-5] has however suggested that...
A physical and electro-thermal Compact model for thermal effect and crosstalk in 3D RRAM arrays has been firstly proposed. The simulation results show that the transient thermal effect will dominate reset process. The proposed model is based on 3D Fourier heat flow equation and electro-thermal analogy which can couple thermal network to its electrical schematic. The comparison between the Compact...
Recently, soft magnetic thin films with high complex permeability μ, which can be used in the devices working at GHz range, have drew great attentions. A reliable and authentic permeability is very important for their applications. Microwave complex permeability μ=μ'+jμ" can be obtained by using the vector network analyzer (VNA). Generally, a jig was used to hold the magnetic thin films and detect...
The effect of terminal ship-to-air missile intercepting maneuvering target at high speed is studied through the method of three-dimensional trajectory simulation based on vector operation. The three-dimensional vector equation of command acceleration is elicited according to TPN at first considering the seeker's noises and the rudder's overload limit. An algorithm of calculating miss distance caused...
The research topic of autonomous underwater vehicles (AUVs) has attracted much attention over years since they provide marine researchers easy ways to access the ocean for surveying and site investigation, etc. To accomplish these applications, an AUV has to know its position accurately. Therefore, AUV localization is very important problem. In this paper, we propose an interactive multiple model...
By analyzing the current development situation of open computer numerical control (CNC) system, architecture /component software technology and mechatronics coupling design theory, this paper research on a structuring methodology based on these technologies. The conception of composability CNC and structuring method system hardware are represented in this paper. Then a mathematical model of interfaces...
We use a density-matrix framework to evaluate the wallplug efficiency of mid-infrared quantum cascade lasers. We assess the limitations to maximum current and internal efficiency, imposed by injection coupling and current leakage, respectively.
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