We successfully designed an optimized plenum fan with a three-dimensional, smooth, curved blade. The optimized model revealed that the static pressure in the channel had been increased uniformly and stably, and the flow separation at the leading edge was significantly reduced. According to simulations, the three-dimensional blade stabilized the fluid flow, and the flow friction was reduced by suppressing the flow separation as much as possible so that both the static pressure and the static efficiency were clearly improved in comparison with those of the original model. As a result, the static efficiency was improved by 6.3% compared with that of the original model.
We successfully designed an optimized plenum fan with a three-dimensional, smooth, curved blade. The optimized model revealed that the static pressure in the channel had been increased uniformly and stably, and the flow separation at the leading edge was significantly reduced. To conclude, the three-dimensional blade stabilized the fluid flow, and the flow friction was reduced by suppressing the flow separation as much as possible so that both the static pressure and the static efficiency were clearly improved in comparison with those of the original model. The static efficiency, as a result, was improved by 6% compared with that of the original model.
In this paper, we propose a hardware-in-the-loop simulation (HILS) for functional safety compliant electric power steering (EPS) system. The proliferation of electric and electronic systems in vehicles has brought the new automotive standard ISO 26262 for the safety of functions. The proposed EPS system should be Automotive Safety Integrity Level (ASIL) D compliant, which is the highest ASIL level. Therefore, EPS system complies with functional safety and HILS is configured to verify performance of functional safety compliant EPS system.
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