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- acoustic noise effect 声振影响
- Some common measures to reduce mechanical acoustic noise are summarized. 并对一些常用的降低电机机械噪声的措施和方法进行了综述。
- The wide application of switched reluctance motor(SRM) is limited by their higher vibration and acoustic noise. 针对开关磁阻电动机运行的振动和噪声问题,基于频域分析方法,研究了电压PWM运行方式下,采用两步换相法降低开关磁阻电动机振动和噪声的机理。
- Considerable vibration and acoustic noise limit the application of Switched Reluctance Motors (SRMs). 大的振动和噪声阻碍了开关磁阻电机的推广应用。
- Part II of this Lab examines a technique for minimizing the effects of scanner acoustic noise on auditory activation. 本实验的第二部份，要探讨减低造影仪噪音的技术对听觉活化的影响，这个技术称为集中扫瞄法。
- The Nautilus meets withstands shock, vibration, salt, fog, drip, fungus, acoustic noise, and EMI. 鹦鹉螺还能抵抗撞击、振动、防盐防雾、防渗水并能经受噪声和电磁干扰的影响。
- Excellent acoustic noise reduction features, users create a work of quiet living environment. 卓越的隔声降噪功能，为使用者创造宁静的工作生活环境。
- By analysing the series voltage negtive backward cironit,the conditions to reduce its noise effect are proposed. 通过分析电压串联负反馈对电路的噪声影响，给出了该反馈电路的低噪声化条件.
- Using the acoustic noise signal generated by driving motor vehicles to vehicle classification is a new and promising method. 利用车辆行驶过程中所产生的声频噪声信号进行车型分类是一种新方法，有较大应用前景。
- This paper also investigated the influence of the zero vector and PWM switching frequency on the acoustic noise radiated by induction machine. 选择适当的PWM开关频率能有效地降低电机的噪声·
- Finally, the relation between ashy starling and agricultural production and impact of city light and noise effect to ashy starling are discussed in the paper. 讨论了灰掠鸟与农业生产的关系及城市光和噪声污染对灰椋鸟的影响。
- Cogging torque is one of the most important parameters of PM motors,which causes torque ripple,vibration and acoustic noise. 齿槽转矩是永磁电机最重要的参数之一,它的存在会造成电机的转矩波动、振动和噪声。
- The paper applies the technology of wavelet transforming to weaken the noise effect in motor control system and decomposes the high frequency noise component by transforming. 本文应用小波变换可以降低电机控制系统中噪声影响的技术,通过变换分解出高频噪声部分,利用小波收缩的阈值量化方法去掉高频部分,再重构信号从而达到去噪目的。
- Cogging torque is one of the most important parameters of PM motors, which causes torque ripple, vibration and acoustic noise. 摘要齿槽转矩是永磁电机最重要的参数之一，它的存在会造成电机的转矩波动、振动和噪声。
- 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. 由于定子的径向振动是开关磁阻电机噪声的主要根源,因此定子振动系统的模态分析是降噪研究的有效手段。
- Experiments show that the two-polyurea grease with good reducing noise effect can be got with low viscidity cycloparaffin mineral oil as base oil and TDI,fat amic and cycloparaffin amic as ... 通过实验证明,采用低粘度的环烷基矿物油作为基础油,采用TDI、脂肪胺、环烷胺作为稠化剂,通过控温慢冷和循环剪切方式,可以制得具有良好降噪声效果的二聚脲润滑脂。
- The acoustic noise generated by the rotate point source, UH-1H rotor in hover and AH-l/OLS in forward flight were calculated, and the computed results from several methods were compared with each other and with the experimental data. 采用旋转点源、UH-1H悬停旋翼、AH-1/OLS前飞旋翼作为算例，对所采用的各种噪声预测方法进行了比较。
- Research on torque ripple and acoustic noise reduction in switched reluctance motor (SRM) is one of the important topics in developing the performance of switched reluctance drives (SRD). 研究抑制开关磁阻电机(SRM)的振动和噪声是改善开关磁阻电动机调速系统(SRD)性能的重要课题之一。
- Based on analyzed in frequency domain,this paper researches on the mechanism of the two-stage commutation method for reduce vibration and acoustic noise in SRM with voltage-PWM control mode. 针对开关磁阻电动机运行的振动和噪声问题,基于频域分析方法,研究了电压PWM运行方式下,采用两步换相法降低开关磁阻电动机振动和噪声的机理。
- It is very important to reduce the noise effectively for medical image processing in DSA &DSI. 图象的降噪处理是DSA、DSI等医学影像系统中图象处理的首要任务。
