分析了飞机机翼—外挂干扰颤振特性。
The paper analyzes the external stores jam flutter characteristics of aircraft wing.
监测这种颤振可以将这种流行趋势消灭在萌芽状态。
Monitoring the chatter, however, may nip such an epidemic in the bud.
沃夫博士认为这种事情经常发生,并称其为病毒颤振。
Dr Wolfe believes this sort of thing happens all the time. He calls it viral chatter.
试验是在大展弦比机翼颤振模型上进行的。
The tests are conducted on a wing model with large aspect ratio.
最后对切削颤振的相位特性进行了试验考证。
The experiments to verify the phase characteristics of cutting chatter are conducted.
进行了变速磨削对颤振增长率影响的试验研究。
The influence of varying speed grinding on the chatter increasing rate has been studied experimentally.
该辨识方法成功地应用于飞机颤振特性的辨识。
Finally, this method is successfully used in the identification of aircraft buffeting characteristics.
颤振试验数据处理是飞行颤振试验的重要组成部分。
Flutter test data processing was the important component of flight flutter testing of aircraft.
对镗杆振动学进行了研究,并总结了减小颤振的方法。
The study of dynamics is done for boring bar, and the methods are summarized to alleviate vibration chatter.
本文讨论了利用微机对机床颤振进行在线预报控制的机理。
The signifieafice of the on line forecasting control of machine tool chattering by micro-computer is briefly discussed.
准确估计模态参数在飞机颤振边界的预测中具有重要意义。
The accuracy of modal parameter estimation plays a crucial role in flutter boundary prediction.
此外还给出了两种叶尖间隙和两种叶型对失速颤振影响的实验结果。
This paper also presents the experimental results of effects of the blade tip clearance and the airfoil shape on the stall flutter boundary.
该方法既保证了控制系统的快速性和鲁棒性,又能够有效地削弱颤振。
This method not only ensures speediness and robustness of the control system, but also can effectively weaken chattering.
采用两种或多种数据处理方法,可以提高颤振导数识别结果的可信度。
The identification reliability of flutter derivatives can be improved by introducing two or more data processing methods.
将一个二元颤振主动抑制系统视为由若干个滞后环节组成的控制系统。
FAS system can be considered as a control system comprising a number of hysteresis elements.
并以颤振位移作为反馈变量,建立了基于二维模糊控制器的颤振控制系统。
A two-dimensional fuzzy controller using displacement as feedback variable is developed to control the cutting chatter.
通过所建理论模型及铣削试验讨论了铣削过程中强迫振动、颤振的产生条件及特点。
Through the theoretical model and milling experiment they discuss the condition of producing forced vibration and chatter in milling process and the chatter characteristics.
对国内外切削颤振领域的研究工作进行评述,分析了现有的颤振预报方法的优缺点。
The work in the field of prediction of cutting chatter is summarized. The advantages and disadvantages are also analyzed in this paper.
为了提高某型飞机机翼颤振速度,详细探讨利用副翼前缘配重提高颤振速度的方案。
To increase flutter speed of airfoil in aircraft engineering, the schemes that makes use of attached weights in leading-edge of aileron are discussed.
发现板在两端简支、中点联结松动时,结构首先出现屈曲失稳,而不会发生颤振失稳。
For pined_pined, loosed midpoint support plate, it is found that the plate's buckling instability will happen first while the flutter instability will disappear.
使用解析方式推导得到机翼的临界颤振速度、颤振频率对于设计变量的灵敏度表达式。
Then the gradients of flutter speed and frequency of wing with respect to the design variables were deduced with analytical method.
利用结构奇异值理论将颤振理论模型和试飞数据有机结合起来,进行了颤振边界预测。
It incorporates organically the flight test data and the flutter theory model by the structured singular value theories, to process the flutter boundary estimate.
气动导数是大跨桥梁结构颤振和抖振分析中确定颤振临界风速和抖振响应的重要依据。
Flutter derivatives play very important roles for determining the flutter critical wind speed and buffeting responses of long-span Bridges.
提出了伺服阀的位置控制和颤振的控制关系上采用可切换的双通道控制形式的设计思想。
In dealing with the relationship of the servo valve position control and the adaptive control, the Double-loop control is adopted.
飞机在打样设计阶段除了需要满足结构强度和刚度要求外,还必须满足颤振稳定性要求。
Aircraft calls for structural intensity rigidity and stability of flutter on the phrase of designing.
最后确定了壁板的颤振边界,分析了温度、来流速度等因素对壁板颤振特性的影响规律。
The panel flutter boundaries are finally determined and the effect of temperature, airflow speed, etc, on the panel flutter characteristics is analyzed.
注:你可以使用一个温和的颤振保持势头和身体的位置只有几秒钟-让感觉的印记有点长。
Note: You can use a gentle flutter to maintain momentum and body position for just a few seconds longer-allowing sensations to imprint a bit longer.
实验结果表明:改变反馈控制的增益和相位角两个变量,能影响主动颤振抑制系统的稳定性。
The test results show that a change in two parameters-the gain and the phase Angle of the feedback control-will have an effect on the stability of the active flutter suppression system.
实验结果表明:改变反馈控制的增益和相位角两个变量,能影响主动颤振抑制系统的稳定性。
The test results show that a change in two parameters-the gain and the phase Angle of the feedback control-will have an effect on the stability of the active flutter suppression system.
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