Traffic noise is generated by four subsources of a highway vehicle: engine/powertrain noise, intake and exhaust noise, aerodynamic noise, and tire/road noise. For a normally maintained highway vehicle, the tire/road noise is a dominant subsource at speeds higher than 80 km/h. The road ...
For controlling vehicle noise emission, manufacturers need to determine the pass-by noise in compliance with the regulation to ensure that their noise emissions lie within the regulation limits. The United Nations Economic Commission for Europe (UNECE) Working Party on Noise and Tyres coordinates the ...
an addition was made in ISO 362-3:2016, to allow in-room certification. Implementation in Regulation 51.3 is pending. The most crucial part of that extension is the method on how to deal with tire noise. When driving in-room, the tire noise is highly overestimated, making the ent...
Moreover, the presentation will consider all the requirements and the advantages that Pass-by Noise can accomplish in a new Sound Package Development to meet a new Conama Resolution. The focus on this topic is to meet a new Governmental Regulation (CONAMA 272/2000) and consequently improve ...
Pass-by noise generated by high-speed trains is an important influencing factor on the surrounding environment and is getting more and more attention with the increase of speed. In the past, the aerodynamic pass-by noise prediction was usually conducted with the wind tunnel mode, ignoring the Do...
BPFs are primarily useful for periodic noise isolation and removal. Some examples will be shown inChapter 7. View chapterExplore book Distributed finite-time control of aggregated energy storage systems for frequency regulation in multiarea microgrids ...
aExcessive ripple may inject unwanted noise into the signal. Poor regulation observed in most battery chargers will pass damaging power line surges. 过份波纹也许注射不需要的噪声入信号。 在多数蓄电池充电器观察的恶劣的章程将通过残损的输电线浪涌。[translate]...
Commission for Communications Regulation Common File Format Common Interface Common Intermediate Format Compact Disc Compact Disc - Digital Audio Compact Disc - Read-Only Memory Compact Disc - Recordable Compact Disc - Rewritable Compact Disc Interactive Compact Disc Mount Rainier Read/Write Compact Disc ...
The operating personnel must pass through specialized training, the test is qualified, holds the card mount guard.Lifts heavy objects the operating personnel to have to observe "Hoisting machinery Safety regulation" strictly, the strict execution lifts heavy objects “ten does not hang” the system,...
aCurrent ways of handling these multiple aspects using either the Taguchi’s signal-to-noise ratio or the weighted-sum method are not adequate. 处理这些多个方面当前方式运用Taguchi的信号噪音比或衡量总和方法不是充分的。[translate] arocking roll 晃动的卷[translate] ...