拍振 meaning in English
beat
Examples
- After filtering out the part of low frequency from the data coming from condition monitor and calculating the comprehensive magnitude of spectrum around the clap - frequency , the alarm limit of clap - frequency vibration mal - functions are determined by using statistical method
从信号中滤除高频成分，求得样本拍频附近谱线的综合幅值，用数理统计的方法确定了拍振故障报警限。 - Unbalanced vibration signal of double - shaft rotating system with little rotating - speed difference is a composite signal called " beat " , how to separate two rotors " unbalanced weight from " beat " is the key of balancing for this rotating system
微速差双转子系统的不平衡振动信号是个拍振，如何从复杂的拍振信号中，分离出内、外转子各自的不平衡量，一直是该类转子动平衡的难点。 - 2 . firstly this paper introduce the whole machine balancing principle and method for dual - rotor systems with little rotating speed difference firstly , then discuss key points such as picking up base signal , picking up " pai " signal , measuring rotor speed , capturing the value of wave crest and through , calculating the phase values of unbalanced weight , processing odd phases and finding each rotor ' s amplitude . on the foundation of above theories , using signal process technique and chip microprocessors technique , we developed a portable intellectual instrument , the first domestic device . which can balance dual - rotor system with little rotating speed difference quickly and accurately
本文从不解拍整机动平衡原理出发，在详细讨论基准信号、拍振信号的提取；转速的测量；拍峰、拍谷的捕捉：不平衡相位的求法、特殊相位角的处理；内、外转子幅值的确定等关键问题的基础上，应用信号处理技术和单片机技术研制成功国内第一台性能稳定、操作简单、成本低廉且平衡速度快，平衡精度高的便携式微速差双转子现场整机智能动平衡仪。 - Base on review of existed study and application in suppressing cable vibration in the world , technique of mitigating cable vibration with viscous damper and mr damper has been investigated in this dissertation , and the main contents and progresses in form of summary are as following : 1 the motion differential equations of the cable - damper system are formatted , which take into account these factors , such as the inclined angle , sag , stiffness etc . coupling motion between cable and deck is studied with analytical and numerical method . numerical results show that large amplitude vibration of cable with beat rhythm will occur when exciting frequency of deck equals two times modal frequency of cable
本文在对国内外斜拉索振动控制研究与应用现状进行综合评述、分析的基础上，针对上述问题进行了深入研究，具体的研究内容和取得的成果包括： 1 、建立了斜拉索-阻尼器系统运动方程，对拉索与桥面的耦合振动作了分析和研究，数值结果显示当桥面激振频率等于某阶拉索模态频率的两倍时，很小的初始扰动将引起拉索的大幅振动，并呈现拍振的特征，与实测的拍振信号一致。