ID 原文 译文
57938 为了减小系统非线性和噪声对参数辨识效果的影响，采用缺失变量的高阶关联矩阵方法( HOCC) ，以处于混沌状态的蔡氏电路为研究对象，分别对模拟蔡氏电路以及存在噪声的单个实验蔡氏电路和耦合实验蔡氏电路进行动力学参数辨识. In order to reduce the influence of system nonlinearity and noise on the effect of parameteridentification，the high-order correlation computations ( HOCC) with missing variables and noise is usedto identify the dynamic parameters of real chaotic Chua’s circuit，based on both simulation and experimental data of a single chua’s circuit and a coupled chua’s circuit.
57939 研究结果表明，该方法在蔡氏电路电感电流未知情况下进行参数辨识是有效的，同时对噪声具有很好的鲁棒性.所得的参数辨识结果和电路标定参数的相对差距均能在 20% 的范围之内. The results showed that the relativeerrors between identifications and calibration parameters of the experiments can be controlled within20% ，which means HOCC not only has good robustness to noise but also solves the problem produced bythe missing data of the current of inductance.
57940 该研究结果可以为蔡氏电路中器件参数测量提供参考依据，并能进一步应用到其他网络结构参数辨识实验中. This work provided a benchmark for the measurement of instrument parameters of Chua’s circuit，and could further apply on the parameter identification of othercomplicated networks.
57941 针对改善波长转换器转换特性的问题，研究了周期极化铌酸锂晶体中采用分段准相位匹配光栅结构对基于级联和频 + 差频效应的波长转换器特性的影响. In order to improve the conversion characteristics of wavelength converters，the effect of thesegmented quasi-phase matched grating structure in the periodically poled lithium niobate crystal on thecharacteristics of wavelength converters based on cascaded sum + difference frequency generation isstudied.
57942 对于单通和双通构型，增加段数，并优化设计每段的极化周期，可以同时获得高转换效率、大转换带宽和较好的平坦性. For both of single-pass and double-pass configurations，high conversion efficiency，large conversion bandwidth，and good flatness can be achieved simultaneously by increasing the number of segmentsand optimizing the poling period of each segment.
57943 在相同条件下，双通构型波长转换器的转换效率和平坦性较好，但转换带宽比单通构型稍差. Under the same conditions，the conversion efficiencyand flatness of the double-pass configuration are better，but the conversion bandwidth is slightly worsethan that of the single-pass configuration.
57944 与采用位移泵浦光的波长提高平坦性的方法相比，利用分段准相位匹配光栅结构能够获得几乎相同的平坦性，但转换效率和转换带宽却比泵浦光波长位移法好. Compared with the method of shifting the wavelength of one ofthe pump light，the use of segmented quasi-phase matched grating structure in wavelength converter canobtain almost the same flatness but better conversion efficiency and conversion bandwidth.
57945 此外，研究了晶体长度对基于分段准相位匹配光栅结构波长转换器特性的影响. Moreover，theeffect of crystal length on the characteristics of a wavelength converter based on the segmented quasiphase matched grating structure is also investigated.
57946 为了使交互式工件分割算法满足实时性的要求，提出了一种将工件形态特征与图像分割算法相结合的工件自动分割方法. Since many enterprises produce a huge number of workpiece images every day，and the existing interactive workpiece segmentation algorithm can not meet the real-time requirements，a workpiecesegmentation method combining workpiece morphological features and image segmentation algorithm isproposed.
57947 利用 MeanShift 算法分割图像提取目标区域; This method consists of four steps: