脉动

The effect of fluctuating pressure distribution on the surface made by Mach number and attack angle was researched.

同时利用该方法研究了马赫数、来流攻角等因素对再入飞行器表面脉动压力环境的影响。

The integrated mathematical model of the induction motor system with the consideration of dead time of inverter is set up and the effect of the dead time of inverter on the torque pulsation of system is studied.

建立了考虑逆变器死区时间的异步电动机系统整体数学模型，研究逆变器死区时间对系统转矩脉动的影响。

On the other hand, the mill housing works under pulsating load, so the fatigue damage can take place. With Miner formula and the P-S-N curve of the mill housing, fatigue life is predicted through being programmed in FORTRAN language.

另一方面，由于机架是在脉动载荷下工作，有发生疲劳破坏的可能，本文采用修正的Miner法则，结合机架的P-S-N曲线，通过FORTRAN语言编制程序，预测了机架的疲劳强度可靠性寿命。

First of all, this paper establishes the simulation method for fluctuating wind with a multivariate normal distribution model and an autoregressive filter. On the basis of simulation results of the wind field, the time dispersion of the buffeting forces by turbulent wind is achieved.

首先，本文利用多变量正态分布模型并结合线性滤波法的自回归模型建立了脉动风的仿真模拟方法，从而实现了对紊流抖振力的时间离散。

Simulation results show that it can improve the systems performance with low torque ripple, using the null vector rationally.

仿真结果表明，正确地使用零电压矢量能够有效减少转矩脉动，改善系统性能。

The recorder can provide the numeric display of blood pressure in real time. The analyzer can provide random blood pressure measurement setup, as well as the 24 hour trend graph. the wave of pulsate pressure in cuff and the statistical distribution of blood pressure. The hardware and software design of the system are presented.

系统具有任意的测量设置选择，能够实时数字显示血压值，还可提供24小时血压趋势图，袖带脉动压力波形图和血压值的统计分布。

To decrease SRM torque pulses, the skew of rotor is also applied to make the rotor and the influence of skew angles on the performances is analysed.

为了减少SR电机的转矩脉动，降低其振动和噪声，本文首次将斜槽的概念引入了SR电机，分析了斜槽角度对SR电机性能的影响。

Direct torque control is another high performance control technique of AC motor, it discard the decouple idea of vector control, but adapt flux oriented control and transient space vector theory, directly control stator flux and torque, it has the advantage of rapid torque response and less relying on stator parameters, but has the disadvantage of bigger torque ripple.

直接转矩控制技术是继矢量控制技术之后的又一种交流电机高性能控制技术，它摈弃了矢量控制中解耦的控制思想，采用定子磁链定向和瞬时空间矢量理论，直接对电机定子磁链和转矩进行控制，具有转矩响应快、对电机参数依赖小的优点，但它的不足之处就是存在转矩脉动。

Through the experiment,obtaines the spectrum of the pressure signal at the import and outport of the capillary.Finds that the peak values at the both locations mainly lie in intermediate frequency.

通过实验得到毛细管进出口的压力信号的分布图，结果显示两者压力脉动信号的峰值频率均主要集中在中频段处。

So a method that combining the model experiment and numerical computation are discussed in this paper. The flow-induced vibration response of the plane recumbent gate in ShangHai qingshui river is computed in this method, and the result is reasonable and credibility, this method can be extend to compute the other hydraulic structures like overfall dam, guide wall, gate pier and so on, which is under fluctuating pressure.

由此探讨了一种将水力模型试验跟数值计算相结合来计算闸门流激响应具体值的方法，并应用于上海清水河泵闸水下卧倒门的流激响应计算上，结果合理可靠，该方法可以推广应用于溢流坝面、导墙、闸墩等受水流脉动荷载作用的其它水工建筑物。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。