ID 原文 译文
2433 钢包在装盛钢水前的热修工位由行车吊装放置,其放置后的绝对位置难以固定,从而导致温场分布无法确定。 Before the ladle is filled with molten steel, the ladle is placedin the hot repair station by driving. The absolute position of the ladle after placement is difficult to fix, resulting in a tempera-ture field distribution that cannot be determined.
2434 针对此现状,本文提出了一种激光定位与扫描的钢包温度场测量方法,先利用定位激光确定被测钢包所处的空间坐标, So, this article presents a method for measuring the temperature field of la-dle by laser positioning and scanning. Firstly, the positioning laser is used to determine the spatial coordinates of the ladle.
2435 再由主测量平台执行机构带动扫描激光与红外测温传感器扫描钢包内壁面获取钢包内壁各被测点的测距与温度值, Then, the actuator of the main measurement platform drives the scanning laser and the infrared temperature measurement sensor to scan the inner wall surface of the ladle to obtain the distance measurement and temperature of each measured pointon the inner wall of the ladle.
2436 根据空间坐标关系,将被测点测距值映射为钢包坐标数值,从而得到钢包内壁各点坐标与温度值,即温场分布。 According to the spatial coordinate relationship, the distance measurement values of the meas-ured are mapped to the ladle coordinate values, therefore we obtained the coordinates and temperature values of the innerwall of the ladle.
2437 现场实验表明:该方法可实现钢包温场的获取, So the temperature field distribution is obtained.
2438 坐标定位不确定度≤3.0mm;温度测量最大误差 4.7℃ ,最小误差 0.5℃ ,平均误差小于 3.3℃ ,达到较高定位与测量精度,为基于温度信息的冶金工艺控制提供重要参数信息。 The field experiment shows that the method can obtain thetemperature field of the ladle, the coordinate positioning uncertainty is no more than 3. 0mm;the maximum error of tempera-ture measurement is 4. 7℃ , the minimum error is 0. 5℃ , and the average error is less than 3. 3℃ . The method achieves to high positioning and measurement accuracy, it will provide important information for steel-making control based on tempera-ture information.
2439 针对极/超低频信道噪声模型参数估计复杂度高而难以实施最优非线性处理的问题,根据噪声时域波形分析,本文提出了一种基于局部方差中值滤波的抑噪方法。 Aiming at the problem that parameter estimation for extremely /super low frequency channel noise model isso complicated that it is difficult to perform optimal nonlinear processing and according to the time-domain analysis of thenoise waveforms, a noise suppression method was proposed based on median filtering (MF)across local variance.
2440 该方法利用局部方差提取结构信息以强化噪声脉冲性,提高中值滤波抑噪性能; It utilized the local variance to extract the structural information so that the noise impulsiveness would be enhanced and the perform-ance of MF would be improved;
2441 采用基于恒虚警率的奇异值检测方法实现含噪样点的盲判决,利用自适应中值滤波算法实现噪声的盲抑制。 utilized the constant false alarm rate outlier detection method to achieve the blind determina-tion of the noisy samples and the adaptive MF algorithm to achieve the blind suppressions.
2442 仿真和实测结果验证了该方法的有效性。 Simulations and real tests verifiedits effectiveness.