We studied the total sound pressure level test data in an annular combustion chamber of aircraft engine by Grop Method of Data Handing(GMDH).
通过简单的二元二次回归原理来构造出下一代较为复杂的次级回归方程,并且利用"优选原理"淘汰掉次级回归方程中的那些不理想的项,得到燃烧室噪声总声级的高阶方程,获得较客观的描写复杂非线性系统的非线性模式。
In the system, a lot of vibration sensors are laid in the differentplaces of the cabin and the field bus monitoring network system is found, which thesystem can real-time monitor the total ship noise.
系统通过在船舱内不同的位置布置大量振动传感器和建立现场总线监测网络系统,实现对船舶总噪声的实时监测,从而对船舶典型航态的声场特性作出准确的预报,以便提高船舶航行的安全可靠性,同时通过采用某些降低乃至消除噪声技术和措施,有效地保护船员及乘客的身心健康。
GMDH method study on annular combustor noise total sound level of aircraft engine
航空发动机环形燃烧室噪声总声级的GMDH方法研究
measured noise level [MNL]
量度所得的噪音声级
Determination of sound power level for noise emitted by woodworking machinery
GB/T3770-1983木工机床噪声声功率级的测定
Determination of sound power levels of noise emitted by household electrical appliances
GB/T4214-1984家用电器噪声声功率级的测定
Two-stage impulse noise filtering algorithm based on PCNN noise detection
基于PCNN噪声检测的两级脉冲噪声滤波算法
The Origin of Noises from Vehicle Transmissions and the Measures how to Lower Them
汽车变速器总成的噪声源及降噪措施
Research on Multi-channel Adaptive Active Noise Control Systems for Reducing Vehicle Interior Low Frequency Noise;
车内低频噪声多次级声源有源消声系统研究
Acoustics--Determination of sound power levels of noise sources using sound pressure--Survey method using a reference sound source
GB/T16538-1996声学声压法测定噪声源声功率级使用标准声源简易法
Acoustics--Determination of sound power levels of noise sources--Precision methods for anechoic and semi-anechoic rooms
GB/T6882-1986声学噪声源声功率级的测定消声室和半消声室精密法
Conclusion The workplace can be classified by equivalent consecutive sound level A.
结论噪声作业可以用等效连续A声级来进行分级。
Acoustics--Determination of sound power levels of noise sources using sound intensity--Part 2: Measurement by scanning
GB/T16404.2-1999声学声强法测定噪声源的声功率级第2部分：扫描测量
Acoustics--Determination of sound power levels of noise sources--Requirements for the performance and calibration of reference sound source
GB/T4129-1995声学噪声源声功率级的测定--标准声源的性能要求与校准
internal-noise bandwidth
内噪声[固有噪声]带宽
Johnson noise
【无】热(激)噪声
Metal-cutting machine tools--Measurement method of sound pressure level
GB/T16769-1997金属切削机床噪声声压级测量方法
Determination of sound power levels of noise emitted by metal cutting machine tools
GB/T4215-1984金属切削机床噪声声功率级的测定
Determination of sound power level for noise emitted by reciprocating pump--Engineering method
GB/T9069-1988往复泵噪声声功率级的测定工程法
Determination of sound power levels of internal combustion engines noise-Quasi-engineering method
GB/T1859-1989内燃机噪声声功率级的测定准工程法