Large amplitude test, Unsteady aerodynamic, Wall influence, dynamic derivative simulating, Mathematic model, Fuzzy logic, Aerodynamicmodeling, Flight simulating.
大振幅试验,非定常空气动力,空气动力模型,洞壁干扰,动导数仿真,数学模型,模糊逻辑,飞行仿真。
An Amplitude Control of Digital Level is provided to test Indicator Level Tolerance.
一个数字电平的振幅控制被提供用于测试指示器电平公差。
For high frequency, or low amplitude measurement, probe ground shall be connected to appropriate points in the circuit under test.
对于高频或低幅值测量﹐探头的地应接到测试电路中的适当位置。
Wind tunnel test of sectional model is an important means for determining lock-in region of wind speed and maximal amplitude of vortex-excited resonance.
节段模型风洞试验是研究涡激共振风速锁定范围和最大振动幅值的一种重要手段。
Test Data show that the pulsating amplitude of secondary air can reach 40% under some special conditions, affecting more greatly the flame stability.
试验数据表明,在某些特殊工况下,二次风脉动幅度可能高达40%,对火焰稳定性影响较大。
This paper introduces the principle of waveguide microwave leak test system, illustrates the formation and the realization of amplitude measurement unit and display-control unit in detail.
介绍了波导微波泄漏检测系统的原理,并对其中的幅度测量单元、显控单元的组成和实现作了详细的阐述。
The test result shows that the estimator can satisfy the engineering requirement of frequency distinguishability and amplitude stability.
测试结果表明:估值器的频率分辨率和幅值稳定性较高,能满足工程计算的要求。
To design and manufacture a constant-source with adjustable amplitude value and the test system, and to realize the examination of zener diode voltage drift parameter, is very important.
设计制作出一个幅值可调的恒流源及其测试系统,实现稳压二极管电压漂移参数的检测,至关重要。
Compared with forced vibration tests, the ambient vibration test is more convenient and it has enough accuracy for the small amplitude response characteristics.
与强迫振动试验相比,环境振动试验比较简单、方便,所确定出的小振幅水平下的木塔结构动力特性具有足够的精度。
Through the loading test of different displacement amplitude, various loading frequency and circulation, working properties of lead-core rubber damper were investigated.
通过不同位移幅值、不同频率和不同循环的加载试验,研究了铅芯橡胶阻尼器的工作性能。
The results of field test showed that adopting cascade geophone pattern can be results of good continuation of phase, enhanced amplitude and high signal-to-noise ratio on the records.
实际野外试验结果表明,采用串联检波器串的方式所得记录的相位连续性好、振幅增强,信噪比较高。
In addition, a cold test model is designed based on a set of designed clustered cavities, the amplitude frequency response of each cavity is measured with network analyzer.
此外,对一套加工成形的簇腔模型进行了冷测模型设计,并使用网络分析仪测量了各个腔体的幅频响应。
A vector amplitude weighing method of direction finder composed of ridged horns is presented and analyzed using results of test.
论文对幅度复加权测向原理进行了详细推导,并利用实际测试结果进行了研究。
Furthermore, in order to test the designed antennas, the latter part of the article gives the design of the Auto-Measuring System for Antenna to get the amplitude patterns of the tested antennas.
另一方面,为了检测设计的天线性能,论文的后半部分构建了天线自动测量系统来测量天线的幅度方向图。
Circuit Breakers are supplied to protect the 115 VAC Inputs (2 each) as well as the Variable Amplitude Low Voltage Powers used by the Indicator Under Test (UUT) for Power, Reference or Lighting.
断路器被提供用于保护115VAC输入(各有2个),以及保护被测指示器(UUT)所用于电源,基准或照明的可变振幅低压电源。
It is shown by test results that at a given equivalent stress amplitude the constant amplitude fatigue life follows the lognormal distribution.
结果表明,在同一应力水平下,所用试样的常幅疲劳寿命服从对数正态分布。
This paper mainly describes the amplitude and phase errors caused by zero-order holder and the error caused by finite word length of D/A, and computer simulation test of D/A error is also introuced.
针对零阶保持器引起的幅度误差和相位误差,以及D/A转换器有限字长引起的误差进行了较为详细的分析,并进行了D/A误差仿真试验。
This method including amplitude and harmonic method, using the two kinds of methods for compaction test, fitting the linear regression equation for compaction degree.
此方法包括幅值法和谐波法,采用这两种方法进行了压实度检测试验,拟合出了压实度值的线性回归公式。
The validity of the model is verified by the test results of variable amplitude loading.
并用变幅疲劳试验结果验证了模型的有效性。
By means of the experimental data from dynamic triaxial stress-strain test of variable cyclic amplitude for frozen soil, the formative conditions of residual strain on frozen silt clay are studied.
基于不等幅值循环荷载作用下低温三轴振动试验资料,研究了冻结粉质粘土在分级往返加荷情况下的残余应变产生条件。
The results of simulative emulation and test indicate that the vibration amplitude at the end of spindle can be reduced effectively after installing dynamic shock absorder onto the system.
模拟仿真和试验结果表明,在系统加入动力减振器后,主轴末端振动幅值可得到有效减小。
The oscillating flow characteristics of the test section are obtained by the analysis of the amplitude and phase shift of the velocity and the pressure wave.
通过测量阻力元件两端的动态压力、流速,得到交变流动情况下动态压力与质量流量之间振幅和相位关系,从而得到所测元件的交变流动阻力特性。
The test results show that the predicting fatigue life under variable amplitude loading follow the log normal distribution and agree well with simulation test results.
结果表明,变幅载荷下疲劳寿命的预测结果和模拟结果均服从对数正态分布,且两者符合很好。
The amplitude of N270 elicited in the conflict condition was enhanced in the repeated test at C3, C4 and P3 electrodes but its latency did not differ from the first test.
重复实验中,冲突状态下诱发的N270的振幅在C3、C4和P3电极部位比第一次实验显著增强,但潜伏期和第一次实验相比没有显著性差异。
The former one is now widely used in the monopulse system to calibrate the amplitude and phase imbalances between the sum and difference channels by injecting test signals.
离线校正的方法是现阶段单脉冲雷达系统进行和差通道幅相校正采用的主要方法,它通过注入测试信号的方法来得到对误差接收通道幅相特性的估计。
A new type of random program constant amplitude load spectrum is introduced, which is used in laboratory simulation test and life prediction of tractor components under random loading.
本文介绍了一种新型的随机程序载荷谱,以用于拖拉机零部件在随机载荷作用下的室内模拟试验与寿命预测。
The main contributions of this thesis are summarized as follows: 1 Proposed a method using amplitude spectrum and reflective symmetry of key frames as gait features to recognize test sequence.
本文的主要贡献如下:1提出了幅值谱和反射对称作为关键帧特征的步态识别算法。
The test result shows tha the influence of related displacement on surface finish is linear and related to amplitude and frequency of vibration and spindle speed.
试验结果表明:相对位移对表面光洁度的影响是线性”的,不仅与振动幅值有关而且与振动频率及主轴转速有关。
Measuring the dynamic strain involves the constant modification of gain, as determined by the signal amplitude. This practice suffers from the complex test and the low accuracy.
在动态应变信号测试中,经常需要根据信号的幅值不断调整放大器的放大倍数,测量电路复杂,精度低。
Measuring the dynamic strain involves the constant modification of gain, as determined by the signal amplitude. This practice suffers from the complex test and the low accuracy.
在动态应变信号测试中,经常需要根据信号的幅值不断调整放大器的放大倍数,测量电路复杂,精度低。
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