摘要 :
In this paper we introduce the Agile Model-Based Integration Framework (AMBIF), a multi-domain modelling and simulation environment. Relying on open-standard interfaces, AMBIF enables the virtual integration of a Cyber-Physical Sy...
展开
In this paper we introduce the Agile Model-Based Integration Framework (AMBIF), a multi-domain modelling and simulation environment. Relying on open-standard interfaces, AMBIF enables the virtual integration of a Cyber-Physical System (CPS) subsystem models for advanced SW Validation & Verification (V&V) analysis. Leveraging AMBIF, we propose a methodological approach where the integrated system model evolves together with the development cycle of its subsystems: the more the subsystem design processes advance and refined subsystem models are available, the more the accuracy and the details of the full system virtual prototype increase. As a result, system-level V&V analyses can be performed all along the product development cycle, spanning among different virtualization abstraction levels including MiL, SiL, VPiL and HiL simulations and continuously assessing system expected behavior and performance. We evaluate the AMBIF capabilities on two industrial use cases: an Air Management System and an Electro-Mechanical Actuator system.
收起
摘要 :
Thermite reactions using micro-sized aluminum as fuel require long ignition delays and high ignition temperatures especially when the oxidizer has a higher melting temperature (e.g. CuO: 1201°C). Other ingredients (e.g. sensitize...
展开
Thermite reactions using micro-sized aluminum as fuel require long ignition delays and high ignition temperatures especially when the oxidizer has a higher melting temperature (e.g. CuO: 1201°C). Other ingredients (e.g. sensitizers, “tinders”) can be typically added to the thermite composition (e.g. Al/CuO) to lower its ignition temperature and improve the time to ignition. In this study, the pyrotechnic Si-Bi2O3 system was used as sensitizer/tinder for the Al/CuO thermite. The ignition temperature of the stoichiometric mixture of the thermite particles was measured using a DTA at a scan rate of 50°C in an inert nitrogen atmosphere. The Al/CuO thermite comprising coarse particles gave an ignition temperature of ca. 940°C. It was found that the ignition temperature is significantly reduced when the binary Si-Bi2O3 system is used as sensitizer/tinder. For the composition Al (15 wt. %) + CuO (65 wt. %) + Si (4 wt. %) + Bi2O3 (16 wt. %), with all components coarse, the observed ignition temperature was reduced to 689°C. Further improvement was achieved when the reagents were nano-sized powders.
收起
摘要 :
Thermite reactions using micro-sized aluminum as fuel require long ignition delays and high ignition
temperatures especially when the oxidizer has a higher melting temperature (e.g. CuO: 1201℃). Other
ingredients (e.g. sensitiz...
展开
Thermite reactions using micro-sized aluminum as fuel require long ignition delays and high ignition
temperatures especially when the oxidizer has a higher melting temperature (e.g. CuO: 1201℃). Other
ingredients (e.g. sensitizers, “tinders”) can be typically added to the thermite composition (e.g. Al/CuO)
to lower its ignition temperature and improve the time to ignition. In this study, the pyrotechnic Si-Bi_2O_3
system was used as sensitizer/tinder for the Al/CuO thermite. The ignition temperature of the
stoichiometric mixture of the thermite particles was measured using a DTA at a scan rate of 50℃ in an
inert nitrogen atmosphere. The Al/CuO thermite comprising coarse particles gave an ignition temperature
of ca. 940℃. It was found that the ignition temperature is significantly reduced when the binary Si-Bi_2O_3
system is used as sensitizer/tinder. For the composition Al (15 wt. %) + CuO (65 wt. %) + Si (4 wt. %) +
Bi_2O_3 (16 wt. %), with all components coarse, the observed ignition temperature was reduced to 689℃.
Further improvement was achieved when the reagents were nano-sized powders.
收起
原文获取