According to the deep analysis of the typical punching process, the loading charts and the amplitude frequency curves of straight side CNC turret press frame are obtained.
根据板料冲裁时的工作负荷图确定了数控回转头压力机的动载荷谱，并通过傅立叶展开，获得了压力机的幅频谱，最后通过 MARC软件采用模态叠加法计算了典型冲裁时机身的动态响应，分析了其动态特性，并对特征点的动静态应力进行了比
According to the deep analysis of the typical punching process, the loading charts and the amplitude-frequency curves of straight side CNC turret press frame are obtained. In the end the dynamic response of a typical process is calculated using modal superposition method by FEM software MARC and the static and dynamic stress of some nodes is compared as well.
文摘：根据板料冲裁时的工作负荷图确定了数控回转头压力机的动载荷谱，并通过傅立叶展开，获得了压力机的幅频谱，最后通过MARC软件采用模态叠加法计算了典型冲裁时机身的动态响应，分析了其动态特性，并对特征点的动静态应力进行了比较。
So when we research it, we can get more valuable effects. And in this paper, through nonlinear researching and analysis of the frame beam, we get, when the bending moment amplitude modulation factor equals 0.80 the result is the best result.
本论文通过框架梁的非线形分析和研究得到了当框架梁端弯矩调幅系数取到0.80时使得结构设计达到最佳。
The step of each frame is generated by the mean of the absolute value of samples and the amplitude range.
步长由每帧的绝对值均值以及幅值范围共同决定。
In modal analysis, the natural frequencies and mode shapes of the frame is obtained under constraint condition. The max amplitude and their corresponding range of frequencies for different point at cycle incentive of the ground are determined through the harmonic analysis.
在模态分析中获取了车架在约束条件下的固有频率和振型，通过谐响应分析确定在周期地面激励下车架上不同点的最大振幅及其对应的频率范围，为改进车架提供参考依据。
After the design is the mathematic model and spectrum equilibrating filter frame are designed, it is used to compensate for attenuation formation caused by the amplitude attenuation and frequency.
建立频谱均衡滤波器的数学模型和电路组成框图，用来补偿由于地层吸收衰减所造成的振幅衰减和频率降低。
Elliptical modal frequency of stator and vibration amplitude of core, frame and bearing house, and factor of isolated vibration are also given in the paper. These parameters are available for operation, design and manufacture of large turbine - generator.
给出了定子的椭圆固有频率，定子铁心、机座、轴承座的振动幅值及定子机座的隔振系数，可供600MW汽轮发电机运行及大型汽轮发电机组的设计和制造参考。
Firstly, three-phase static inverter under the space vector pulse width modulation (SVPWM) is analyzed. Then instantaneous control for three - phase static inverter is implemented in the synchronization frame through dq transform to get the information about amplitude and phase of output voltage.
本文在对空间矢量脉宽调制（SVPWM）方式下三相静止变流器分析的基础上，通过dq坐标变换提取输出电压幅值与相位的信息，实现在同步坐标下对三相静止变流器的瞬时值控制。
The paper discusses how to regulate the amplitude of bending moment within beam end for frame structure, and presents revisal suggestions for previous designs.
对框架结构梁端弯矩应如何调幅问题做一探讨，对以往设计提出修正性的建议。
With code meter, accurate measurement; Bulk fabric feeding frame or amplitude device can be installed, automatically loosen fabric;
进口码表、计量准确◆可加装散布进布架或加装摆幅装置，自动松布；