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Wavelengthcorrectionforfiberspectrometer
- 随着人们对光谱测量仪器灵活性、 微型化的要求 ,便携式光纤光谱仪在实际生产测量中的需求也越来越大 ,对其测量性能的要求也越来越高。根据光纤光谱仪的测量原理 ,利用波长与CCD探测器单元格一一对应的关系 ,提出了一种波长校正的方案 ,波长校准精度可以达到0.5nm ,重复性达0.1nm。-Wit h people′ s requirement for spect rometer are agility and micromation , portable fiber spect rometer
Texture-Segmen-ta-t-ion-withWavelet
- 为了提高纹理图象分割的边缘准确性和区域一致性以及降低分割错误率, 提出了一种基于小波变换的利 用特征加权来进行纹理分割的方法. 该方法包括特征提取、预分割和后分割 3 个阶段, 其中, 特征提取在金字塔结 构小波变换的基础上进行 预分割利用均值聚类算法来对原始图象进行初步的分割 后分割则根据预分割的结果 对特征进行加权, 然后利用最小距离分类器来实现图象的最后分割. 与传统的方法相比, 该方法在分割错误率、边 缘准确性以及区域一致性等方面均有明显的改善-To imp rove t
predictive-dpc
- 本文研究了一种用于三相电压型并网逆变器的新型直接功率控制策略——预测直接功率控制（Predictive Direct Power Control，简称P-DPC）。重点讨论了P-DPC不同的电压矢量选择原则和电压矢量作用时间的处理方法，以降低低次电流谐波成分，获得更好的动、静态性能。-In this paper, a new direct method for three-phase voltage power grid-connected inverter control strategy-
predictive-dpc
- In this paper, a new direct method for three-phase voltage power grid-connected inverter control strategy - predictive direct power control (Predictive Direct Power Control, called P-DPC). Focused on the P-DPC different voltage vector selection princ
predictive-dpc
- In this paper, a new direct method for three-phase voltage power grid-connected inverter control strategy - predictive direct power control (Predictive Direct Power Control, called P-DPC). Focused on the P-DPC different voltage vector selection princ
Predictive
- Predictive direct power control (P-DPC) applied to voltage source pulse-width-modulation (PWM) rectifier was introduced in this paper. Based on the model of power prediction, voltage vectors were selected according to minimizing power errors