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- The Source of Response Spectrum Peak and Drawback of Acoustic Noise Test Spectrum 響應譜峰值來(lái)歷與噪聲試驗譜的缺陷
- acoustic noise test 聽(tīng)覺(jué)噪音試驗
- Some common measures to reduce mechanical acoustic noise are summarized. 并對一些常用的降低電機機械噪聲的措施和方法進(jìn)行了綜述。
- The wide application of switched reluctance motor(SRM) is limited by their higher vibration and acoustic noise. 針對開(kāi)關(guān)磁阻電動(dòng)機運行的振動(dòng)和噪聲問(wèn)題,基于頻域分析方法,研究了電壓PWM運行方式下,采用兩步換相法降低開(kāi)關(guān)磁阻電動(dòng)機振動(dòng)和噪聲的機理。
- Considerable vibration and acoustic noise limit the application of Switched Reluctance Motors (SRMs). 大的振動(dòng)和噪聲阻礙了開(kāi)關(guān)磁阻電機的推廣應用。
- Part II of this Lab examines a technique for minimizing the effects of scanner acoustic noise on auditory activation. 本實(shí)驗的第二部份，要探討減低造影儀噪音的技術(shù)對聽(tīng)覺(jué)活化的影響，這個(gè)技術(shù)稱(chēng)為集中掃瞄法。
- The Nautilus meets withstands shock, vibration, salt, fog, drip, fungus, acoustic noise, and EMI. 鸚鵡螺還能抵抗撞擊、振動(dòng)、防鹽防霧、防滲水并能經(jīng)受噪聲和電磁干擾的影響。
- Excellent acoustic noise reduction features, users create a work of quiet living environment. 卓越的隔聲降噪功能，為使用者創(chuàng )造寧靜的工作生活環(huán)境。
- The application is required to be supported by an engine noise test report and an engine emission test report issued by an approved laboratory. 車(chē)主必須取得由認可實(shí)驗室發(fā)出的引擎噪音測試報告及引擎排放測試報告,以支持其申請。
- Based on noise test results of a four-cylinder gasoline engine, this paper establishes the simulation model by using simulation software GT-POWER. 本文針對某四缸汽油發(fā)動(dòng)機噪聲測試結果，運用數值仿真軟件GT-POWER進(jìn)行建模仿真計算。
- Using the acoustic noise signal generated by driving motor vehicles to vehicle classification is a new and promising method. 利用車(chē)輛行駛過(guò)程中所產(chǎn)生的聲頻噪聲信號進(jìn)行車(chē)型分類(lèi)是一種新方法，有較大應用前景。
- This paper also investigated the influence of the zero vector and PWM switching frequency on the acoustic noise radiated by induction machine. 選擇適當的PWM開(kāi)關(guān)頻率能有效地降低電機的噪聲·
- In this article the bearing ability test of hard gear face point-line meshing gear transmission and the trial of noise test are introduced. 本文介紹了硬齒面點(diǎn)線(xiàn)嚙合齒輪傳動(dòng)的承載能力試驗和噪聲測定試驗的情況。
- Cogging torque is one of the most important parameters of PM motors,which causes torque ripple,vibration and acoustic noise. 齒槽轉矩是永磁電機最重要的參數之一,它的存在會(huì )造成電機的轉矩波動(dòng)、振動(dòng)和噪聲。
- In the noise test of model propellers, singing is a major disturb which influences noise test and data analysis, and must be eliminated. 摘要模型螺旋槳噪聲試驗中，唱音是影響噪聲測試與數據分析的主要干擾，必須予以消除。
- Cogging torque is one of the most important parameters of PM motors, which causes torque ripple, vibration and acoustic noise. 摘要齒槽轉矩是永磁電機最重要的參數之一，它的存在會(huì )造成電機的轉矩波動(dòng)、振動(dòng)和噪聲。
- As the radial vibration of stator is the origin of the acoustic noise of SRMs, model analysis of stator vibration is the effective way to the research for low acoustic noise. 由于定子的徑向振動(dòng)是開(kāi)關(guān)磁阻電機噪聲的主要根源,因此定子振動(dòng)系統的模態(tài)分析是降噪研究的有效手段。
- Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-13: particular requirements for range hoods. 家用和類(lèi)似用途電器。測定空中傳播噪聲的試驗規程。
- Household and similar electrical appliances - Test code for the determination of aibone acoustical noise - Part 2-8 : particular requirements for electric shavers. 家用及類(lèi)似用途電器.;測量空氣噪聲的試驗規范
- Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-13 : particular requirements for range hoods. 家用和類(lèi)似用途電器.;測定空中傳播噪聲的試驗規程
