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失真指数
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  distortion index
     The self-organizing map(SOM) based on particle swarm optimizer(PSO)(called PSO-SOM) training algorithm is presented by using direct optimization of a locally weighted distortion index(LWDI) that is achieved through PSO algorithm.
     采用粒子群优化(PSO)算法优化权重失真指数(LW D I),提出了基于粒子群优化的SOM(PSO-SOM)训练算法.
短句来源
     SOM algorithm is applied to fault data classification and identification in chemical processes. Direct optimization of 'locally weighted distortion index' by particle swarm optimizer(PSO) algorithm is substituted for Kohonen's heuristic-based training algorithm in SOM. A practical application of the new PSO-SOM algorithm in identifying and classifying fault data of methanol synthesis reactor is provided.
     将自组织映射网络(SOM)应用于化工过程故障数据的分类辨识,并采用粒子群优化(PSO)算法优化权重失真指数(LW D I),代替SOM的启发式训练算法,形成粒子群优化的SOM(PSO-SOM)分类算法。
短句来源
     Direct optimization of "locally weighted distortion index" by Genetic Algorithm(GA) is substituted for Kohonen's heuristic-based training algorithm in SOM. The new GA-SOM algorithm is applied practically to identify and classify fault data of methanol synthesis reactor.
     针对自组织映射神经网络(SOM)启发式训练算法中的缺陷,采用遗传算法SOM中的权重失真指数(LWDI),形成基于遗传算法优化的SOM(GA-SOM)训练算法。
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  “失真指数”译为未确定词的双语例句
     The major parameters such as THD and DF of this VSI are analyzed.
     分析了这种电压源逆变器的主要参数,如总谐波失真度(THD)和失真指数(DF)。
短句来源
     This paper is confined to a discussion of the relations between the distribution of large landslide and the lineament in space. Lineament interpretation, density statistics and deviation index analyses of lineaments from SPOT remote sensing image have been carried out.
     为探明滑坡空间上丛集性与线性构造关系 ,并查明线性构造的发育特征 ,采用了SPOT卫星像片线性构造解译及线性构造密度统计和失真指数分析方法。
短句来源
     Based on the mathematical model of the phase modulation inverters,the relations among the major parameters such as switching-angles,DF,and THD in the 3 step level voltage source inverters are analyzed in detail.
     在给出了这种逆变器的数学模型之后,详细分析了相角调制的三级阶梯波逆变器的各主要参数如导通角、失真指数和总谐波失真度之间的关系.
短句来源
  相似匹配句对
     Service Quality Index
     服务质量指数
     Index number for atmospheric pollution
     大气污染指数
短句来源
     On the aggregation distortion
     聚类失真问题
短句来源
     high wave distortion;
     波形失真大;
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  distortion factor
The nonlinear distortion factor of the sine signal is within 0.5%.
      
Regularities of the behavior of the frequency response, nonlinear distortion factor, and dynamic range of the converter are established.
      
The diagnostic criterion is the nonlinear distortion factor calculated as the ratio of the rms value of the higher harmonic amplitudes to the rms value of the amplitude of the investigated acoustic signal.
      
The real part of the optical potential in the distortion factor does not play an important role as far as the integrated absorption rate concerned.
      
Due to the curvature of the manifold, the new Riemannian versions of these theorems incorporate a volume distortion factor which can, however, be controlled via lower bounds on Ricci curvature.
      
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  distortion index
Measured transformation enthalpies in the range of 7 to 16?J/g correlate roughly with the distortion index.
      
A new sodian-beryllian cordierite from Soto, Argentina, and the relationship between distortion index, Be content, and state of
      
Like in other sodian beryllian cordierites the distortion index Δ is low (0.12), and a negative correlation between Δ and Be contents is established using additional data from the literature.
      
The transformation is first order and at temperatures below about 1,450° C the stable phase is orthorhombic cordierite with a distortion index,Δ≈0.25.
      
The limitations of the distortion index as an indicator of the structural state of anhydrous Mg-cordierite are discussed in terms of short-range and long-range distortions associated with the transition.
      
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There are many large landslides along the mainstream banks of the lower part of the Three Gorges reservoir area, Yangtze River. The distribution of these landslides is uneven in space.This paper is confined to a discussion of the relations between the distribution of large landslide and the lineament in space. Lineament interpretation, density statistics and deviation index analyses of lineaments from SPOT remote sensing image have been carried out. Results show that the landslide-concentrated regions occur...

There are many large landslides along the mainstream banks of the lower part of the Three Gorges reservoir area, Yangtze River. The distribution of these landslides is uneven in space.This paper is confined to a discussion of the relations between the distribution of large landslide and the lineament in space. Lineament interpretation, density statistics and deviation index analyses of lineaments from SPOT remote sensing image have been carried out. Results show that the landslide-concentrated regions occur in the area of dense lineaments as well as high anomaly lineament deviation index.

三峡工程库首区分布着许多大型滑坡 ,在空间上具有丛集性规律。为探明滑坡空间上丛集性与线性构造关系 ,并查明线性构造的发育特征 ,采用了SPOT卫星像片线性构造解译及线性构造密度统计和失真指数分析方法。结果显示 ,滑坡密集区与线性构造的高密度区有较好的吻合关系

The quality of the output voltage in step level inverters could be improved both by the scheme of amplitude modulation and by the scheme of phase modulation.Based on the mathematical model of the phase modulation inverters,the relations among the major parameters such as switching-angles,DF,and THD in the 3 step level voltage source inverters are analyzed in detail.

通过调节各阶梯电平的幅度或各阶梯电平的相角都可以达到改善逆变电源输出电压质量的目的.在给出了这种逆变器的数学模型之后,详细分析了相角调制的三级阶梯波逆变器的各主要参数如导通角、失真指数和总谐波失真度之间的关系.

This paper proposes a two-armed push-pull inverter, including its topologies, power distributions in every switching devices and modulation schemes. The major parameters such as THD and DF of this VSI are analyzed. Comparison study shows that the quality of two-armed push-pull VSI is better than those of square-wave VSI. And the switching loss is lower than that of PWM scheme at same time, especially used in wide frequency range. Detailed calculating formulae and experimental results are presented.

该文介绍了一种双臂推挽式逆变器,包括其电路拓扑、每个开关器件的功率分布和调制策略。分析了这种电压源逆变器的主要参数,如总谐波失真度(THD)和失真指数(DF)。比较研究表明,这种逆变器的质量明显优于方波逆变器,同时开关损耗明显低于PWM调制方式,特别适用于宽频范围。介绍了计算公式和实验结果。

 
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