1) ratio between frequency and work revolution
频转比
2) torsion frequency ratio
扭转频率比
3) effective value-revolving frequency ratio
有效值-转频比
1.
Fault severity evaluation of rolling bearings is studied and a combined severity evaluation method is presented based on effective value-revolving frequency ratio and continuous wavelet transform(CWT) energy entropy.
针对滚动轴承故障程度诊断,提出了基于有效值-转频比和连续小波能量熵的联合故障程度诊断方法。
4) rotating frequency
转频
1.
The importance of rotating frequency in fault diagnosis of roller bearings is analyzed based on formula of fault characteristic frequency.
从滚动轴承故障特征频率的计算公式出发,分析了转轴的旋转频率在滚动轴承故障诊断中的重要性;阐述了由变频器频率估算的转频远远不能满足精度要求;提出基于时标脉冲信号的转频的计算方法,给出它的时域计算公式和频域计算公式,并推导出它们各自的适用条件;进一步建立隶属度函数和贴近度函数,以模糊数学为基本原理使用择近原则对转频进行精确调节,弥补了数据点数记录过程中可能存在的误差,消除了频率分辨率的影响,为以后的故障诊断工作做好充分的准备。
5) frequency ratio
频率比
1.
ngineering-machinary seat system is described as an indenpent desgin element to obtain calculation method of optimal parameters (optimum damping ratio and optimum frequency ratio) for seat system excited by harmonic or white noise.
将工程机械座椅系统看成一个独立的设计环节，从理论上提出了在正弦和白噪声激励下座椅最优减振参数（最优频率比和最佳阻尼率）的计算方法和计算公式。
2.
Reasonable lowest frequency ratio of this machine was brought forward by analyzing change of vibration body amplitude due to fluctuation of exciting frequency and mass of system,as well as relationship between vibration isolation coefficient and frequency ratio,and the influence of frequency ratio to eccentric rotor parameters.
建立惯性往复振动机械的力学模型和动力学方程,采用频率响应法求动力学方程的稳态解;通过激振频率和系统质量的波动对振动体振幅的影响分析,以及频率比与隔振系数和偏重参数的关系分析,提出该类振动机械合理的下限频率比;同时考虑到弹性支承在系统重力作用下的静变形应大于振动体的最大振幅,从而给出支承刚度和偏重参数设计的理论依据和方法,并通过算例进一步阐述设计方法的应用。
3.
By analyzing the vibrating isolation system,it discusses the relations among the parameters of the vibrating isolation system and how to select frequency ratio and damping of vibrating isolation system.
通过对隔振系统的分析,探讨隔振系统各参数之间的关系以及如何选择隔振系统的频率比和阻尼。
6) constant U/f
恒压频比
1.
Then considers the induction motor and the inverter as a whole controlled object,which named as a variable frequency speed-regulating system in constant U/f.
本文讨论了水泵变频调速的节能原理,提出一种基于参数自调整模糊PID控制的交流闭环变频调速系统的设计方法,把变频器和感应电机组成的变频调速系统看成一个整体—恒压频比变频调速系统。
补充资料：世间转法转智转无尽
【世间转法转智转无尽】
世间转者，谓展转摄前众生界、世界、虚空界也。法转者，谓展转摄前法界、涅槃界、佛出现界也。智转者，谓展转摄前如来智界，心所缘佛智所入境界也。盖此三转，皆言无尽者，以世法智之三种，展转含摄，无有穷尽，是名世间转、法转、智转无尽。
世间转者，谓展转摄前众生界、世界、虚空界也。法转者，谓展转摄前法界、涅槃界、佛出现界也。智转者，谓展转摄前如来智界，心所缘佛智所入境界也。盖此三转，皆言无尽者，以世法智之三种，展转含摄，无有穷尽，是名世间转、法转、智转无尽。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条