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用估计
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  by estimate
     Taking redundant control of materiel grasp and sending system as an example, output of redundant node was tested, output of fault controller was replaced by estimate output to renew function of controller, and realize self-diagnosis of the system.
     以物料抓送系统的冗余控制为例,对冗余结点的输出进行检测、用估计输出取代故障控制器的输出使其功能恢复,实现系统的自诊断。
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  “用估计”译为未确定词的双语例句
     A denoised image is reconstructed by the estimated wavelet coefficient.
     用估计出的小波系数重构得到消噪图像。
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     The accuracy of network point positioning is highly advanced by the weight reconfirmed by "Helmert" variance constitution estimation method.
     采用方差分量估计法计算了控制网边长与方向观测值的方差分量,用估计的方差定权后,明显提高精度。
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     Using estimating intervals to make a comparison when completely using samples to control second class survey, using allowable error as a standard to make a comparison when none or partly using samples to control second class survey.
     提出当二类调查全部用抽样控制时,用估计区间作比较,而二类调查部分和全部未作抽样控制时,以允许误差为标准作比较;
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     Then five methods to estimate interest rates of government bonds are comparative analysized. The implied term structure of Chinese bond's interest rates is estimated by the Nelson-Siegel model. Samples consist of spot rates with maturities of 3-month, 6-month, 1-year, 2-year, 3-year, 4-year, 5-year, 7-year and 10-year.
     然后通过比较分析5种建立国债利率曲线的方法,采用Nelson-Siegel模型估计了中国的国债即期利率曲线,并取用估计出来的3个月、6个月、1年、2年、3年、4年、5年、7年、10年期的即期利率数据做样本,进行相关系数分析和主成分分析,发现至少需要两个因素才能较好的描述中国国债利率曲线的变动。
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     An adaptive control algorithm is established for multivariable system with bounded disturbances. Its global convergence is proved without persistent excitement requirement. The dead function is introduced,this algorithm is Robust.
     对有界干扰的多变量系统得到间接的自适应控制算法.在没有利用持续激励的条件下,用估计参数的修正策略证明了该算法具有全局收敛性.由于辨识算法引入死区函数从而使算法具有鲁棒性.该算法可用于非最小相位系统和开环不稳定系统.
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     The activation en ergy and reaction order are calculated by G.
     G.
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     melanogaster, C.
     C.
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     b) a G-M estimator of ω'1α, ω'2β and ω'1α+ω'2β under L (Xβ, Aα; δ21V, δ22U} respectively.
     b)G-M估计
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     Estimation of Service Life of Derricks on the Job
     在井架的寿命估计
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     Neural Network Approach for Direction-of-Arrival Estimating
     神经网络估计到达波方向
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  by estimate
The fed-batch by pH strategy had no detectable plasmid loss whereas fed-batch by estimate trials had 99% plasmid retention per generation (78% after 25 generations) and batch trials had only 95% (28% after 25 generations).
      
By estimate, 13-15 million women of pregnant age in China are likely to give birth to 80-100 thousand toxoplasma infected babies.
      
This value was derived by estimate using factor income flows in 1980 and an assumed rate of return to derive an implied level of net assets.
      


The parameters of self-oscillation for DC PWM speed control system are examined with J(w) method. Experimental investigation on the characteristics of PWM amplifier shows that it is composed of ideal relay characteristics and lagging characteristics. The relationships between the resistance R, inductance L, electromagnetic time constant T, and the working frequency of PWM amplifier are determined from experimental results by least square fit as follows:R = 1. 3938570exp (0. 35247140-0. 0325218w2 + 0. 0015663w3...

The parameters of self-oscillation for DC PWM speed control system are examined with J(w) method. Experimental investigation on the characteristics of PWM amplifier shows that it is composed of ideal relay characteristics and lagging characteristics. The relationships between the resistance R, inductance L, electromagnetic time constant T, and the working frequency of PWM amplifier are determined from experimental results by least square fit as follows:R = 1. 3938570exp (0. 35247140-0. 0325218w2 + 0. 0015663w3 - 0. 0000272w4) , L = 3.8424177exp(-0 2067093w + 0.0254501w2- 0.0015230w3 + 0.0000320w4), Ti = 2. 3574207exp(-0. 5207332w + 0.0531246w2-0.0028170w3 + 0.0000538w4). The lagging part of the characteristics of PWM amplifier is merged with the linear part of that of the system in the calculation.The vector function is derived and the hodograph of the system is used to obtain the parameters of self-oscillation. the frequency of self-oscillation.where Kr is armature voltage.

本文在实验研究的基础上,建立了脉宽调制放大器(PWM)的数学模型,对直流脉宽调速系统中电机的参数用数学方法进行了分析和估计,并将推演结果用最小二乘法拟合,用估计的机电参数分析系统的自激振荡参量,结果表明,自激振荡参量与实验结果基本吻合。本文还分析了电机的固有频率对系统自激振荡参量的影响。

The backward prediction and singular value(SV) truncation method forthe estimation of multiple exponentially damped real sinusoids in noise are studied.The basic theory and algorithm are outlined, and the effects on the error of the-computational parameters, such as the sampling window, the sampling rate, theorder of prediction-error filter (PEF) and truncated point of SV etc., are studiedby simulated data, lf appropriate computatinal parameters are chosen, the freque-ncy and dampling factor of damped sinusoid...

The backward prediction and singular value(SV) truncation method forthe estimation of multiple exponentially damped real sinusoids in noise are studied.The basic theory and algorithm are outlined, and the effects on the error of the-computational parameters, such as the sampling window, the sampling rate, theorder of prediction-error filter (PEF) and truncated point of SV etc., are studiedby simulated data, lf appropriate computatinal parameters are chosen, the freque-ncy and dampling factor of damped sinusoid can be estimated quite accurately(wthin certain range of SNR). We use this method to estimate parameters of visualevoked potential (EP) and reconstruct EP by estimated parameters according tothe resonant model. The error between original EP and reconstructed waveform inwithin 5%.This method can be used in the analysis and recognization of variouskinds of systems.

本文概述了使用后向预测和奇异值截断法估计噪声中多个指数衰减正弦波的特征参数的基本原理和算法.文中利用大量计算机模拟数据说明计算参数(采样的时间窗口、采样率、予测滤波器阶数及奇异值截断点)对估计精度的影响.只要注意取合适的计算参数.对指数衰减正弦波的频率和衰减因子都可得到基本准确的估计(信噪比限于>10db)。文中列举了估计实例:视觉诱发电位参数的估计,用估计参数重建的波形与原始波形之差小于5%。这种方法可用于各种系统分析和识别等.

This paper presents a new algorithm for the high-resolution estimation of arrival angles of narrowband plane waves. In the algorithm, a post-processing technique is used to decrease the perturbation caused by noises. The post-processing of the noise subspace includes constructing a matrix composed of the elements of the vectors which are in the noise subs-pace and replacing the matrix by its reducing rank approximation. The simulation results have shown the effectiveness of the algorithm.

本文在MUSIC空间谱估计的基础上,提出了一种改善算法。该算法不直接用估计的噪声子空间来计算空间谱,而是对它再处理,使其扰动减小,提高了阵列处理的空间分辨率。计算机模拟表明,新方法能使空间谱估计得到显著改善。

 
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