可用于精密相移测量和有源器件相位稳定性的测量。
It can be used for accurate phase-shift measurement and phase stability measurement of active components.
本文给出测试系统原理图、脉间频率和相位稳定度测量方法以及时域、频域测量结果。
This paper gives the principle diagrams of the measurement system and some methods of measuring the stability of inter pulse frequency and phase. The measurement results in time...
经过实践证明,该模拟器产生的信号相位稳定,频谱纯度高,并具有复杂波形生成的能力。
According to practice, this simulator has stable signal phase, pure signal spectrum, and ability to produce any complex waveform.
然后令计算网格随叶栅振动而振动。时间推进计算到流场参数随时间作周期性变化,振幅、相位稳定为止。
Time marching is continued until the calculated parameters vary with time periodically with stable amplitudes and phases of vibration.
概述了同轴电缆的相位稳定性的原理,及其与电缆结构和材料的相互关系,也介绍了检测温度相位稳定性的试验方法。
This paper describes briefly the principle of the phase stability of temperature in coaxial cables and its relationship with the cable construction and materials.
本文针对TCP网络系统的时滞特性,设计基于内模补偿控制器,提出了基于幅值与相位稳定裕度的控制参数整定方法。
The internal mode compensation controller is designed for the delay performance of TCP network system. The controller tuning method is presented based on the gain and phase margin.
本文介绍了时钟网络中抖动、相位噪声、偏移、频率稳定度等参数的概念以及它们之间的转换关系。
The paper introduce the concepts of timing parameters, including: jitter, phase noise, skew, frequency stabilization, and the relationship between them.
DDS技术是一种先进的频率合成技术,其主要优点是易于程控,相位连续,输出频率稳定度高,分辨率高。
DDS is an advanced technique on frequency synthesis, whose primary advantages are controlling facility, continuous phase and fine frequency resolution.
实验表明这样的系统工作稳定可靠,与偏振编码一样,相位编码也可用于自由空间的量子密钥分配。
The set up is stable and secure and it is proved that the phase can be used as coding in the free space QKD just like the polarization.
方波电源是采用数字技术的脉冲电源,具有相位严格、频率稳定度高,抗干扰能力强等独特的优点。
The square wave source is an impulse source in which digital technique is used. It has the advantages of rigid phase, high frequency stabilization and high antijamming.
雷达MTI系统的性能与雷达发射机的相位及幅度稳定度直接有关。
The performance of MTI system is directly related to the phase and amplitude stability of the radar transmitter.
相位分割由于在稳定方面的损失被当作。
Phase separation is regarded as a result of loss in stability.
该文为一类稳定的最小相位控制对象提出一种新的PID控制器的参数整定方法。
A new tuning method for PID controller design is proposed as a class of stable and minimum phase plants.
控制的频率和相位偏移误差均达到了10 - 5,稳定度达到了0.05%。
When error of the frequency and phase shift is 10-5, its stability is 0.05%.
由于系统的内部动态不稳定,非最小相位系统的输出跟踪问题是一个具有挑战性的非常困难的问题。
The output tracking problems of non minimum phase systems are very difficult, because the internal dynamics of the systems are unstable.
通过镜像映射将非稳定过程转换成最小相位系统,然后用闭环增益成形算法求解鲁棒控制器。
An unstable process is transformed into a minimum-phase system through mirror-injection, then solve the robust controller using closed loop gain shaping algorithm.
从非线性薛定谔方程出发得到了色散缓变光纤(DDF)中交叉相位调制(XPM)不稳定增益谱。
Modulation instability resulted from cross phase modulation(XPM) in decreasing dispersion fiber(DDF) is presented from nonlinear Schrodinger equation.
研究表明,不稳定内部动态有界解的存在性是非最小相位系统能够稳定跟踪期望输出轨迹的关键。
The existence of the bounded solution of unstable internal dynamics is the key to tracking reference trajectory stably.
分析了相位偏置和光纤的色散对锁模机制的影响,获得了产生稳定超短光脉冲的条件。
The effects of phase bias and group velocity dispersion on mode locking mechanism are analyzed. The operating conditions for stable short pulse generation are obtained.
该方法的特点是所用设备简单,载波频率稳定和无相位误差积累影响。
The advantages of this system are that the equipment used is simple, that the carrier frequency is stable and that no affects of phase-error accumulation exist.
针对着陆过程中动态方程的非最小相位特性,利用在线稳定逆产生用于着陆轨迹精确跟踪的前馈输入和状态参考轨迹。
Taking the problem of autonomous precise landing as an integration of trajectory tracking and robust control, precise landing control law was designed based on online stable inversion and SMC.
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.
通过净化介质可提高光学击穿阈值,进而提高相位共轭保真度、能量反射率及其稳定度等SBS特性。
By purifying the medium, the optical breakdown threshold can be increased; thus the phase-conjugation fidelity, the reflectivity of the energy and the stability of SBS increase correspondingly.
文章重点研究了较高振幅振动柱的锁定现象、波动升力与柱位移之间的相位变化,讨论了方柱涡激振荡、驰振和气动稳定性问题。
This study aims at investigating the lock-in phenomenon, fluctuating lift and the phase shift between fluctuating lift and displacement of the oscillating cylinder.
本文在对云南电网进行动态稳定性分析的基础上,综合应用相位补偿法和根轨迹法对鲁布革电厂PSS参数进行了整定。
Based on the dynamic stability analysis the phase compensation method and the root locus method are used in the parameter setting of PSS in Lubuge power station.
理论分析证明,物体的偏转可以引入稳定、线性的附加相位,并给出了物体偏转角度与附加相位之间的关系式;
Theoretical analysis shows that RSPSM can introduce a stable and linear additional phase changes. The relationship between rotating angle and additional phase is offered.
其次针对目标的特殊性,总结了各种运动补偿方式,归纳改进了适合自旋稳定目标成像的包络对齐及相位校正的算法。
Secondly, many motion compensation methods are compared and improved including range alignment and phase correction in order to satisfy various targets imaging conditions.
有限冲激响应(FIR)滤波器的优点是具有精确线性相位而且总是稳定的。
The FIR filter has the distinct advantages that it has linear phase characteristics and is always stable for numerical computations.
研究直升机悬停状态时其动力学模型非最小相位且不稳定特性的设计问题。
A study on the method of design is presented for helicopter hover with nonminimumphase unstable characteristics.
研究表明,在高阶色散下,正负五阶非线性的存在仍然分别对交叉相位调制不稳定性起加强和削弱的作用;
The results show that, in case of high-order dispersion, the positive and negative quintic nonlinearity also intensifies and weakens the cross-phase modulation instability, respectively.
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