通过采用预测校正二步时间积分和单元内引入坡度限制，该算法在时空上均可达到二阶精度。
Second-order accuracy both in time and space can be achieved by means of an explicit predictor-corrector scheme and slope-limiting within elements.
该文提出一种适用于一阶或二阶加延迟系统的自校正比例-积分-微分控制器的设计方法。
A new design approach for self-tuning PID controller with parameter optimization is proposed in this paper.
在许多数据分析，尤其是数据校正过程中，需要知道数据的二阶特征。
In many process of data analysis, especially in data reconciliation, it is required to know the second order character of data.
提出了一种新的解决方法，即利用二阶keystone变换补偿时间二次项，然后用频域校正算法补偿时间一次项。
A new method which using two order keystone transform to correct quadratic migration and frequency domain correction to correct once migration was proposed.
在所有的校正模型中，原始谱图经过二阶导数和偏最小二乘（PLS）处理，20个外部样品用于所建模型的验证，实际和预测的平均相对偏差<5%。
For all samples, the raw spectra were pretreated as second derivative and Norris derivative filter(7,5). partial least square (PLS) was used as the calibration algorithm.
在所有的校正模型中，原始谱图经过二阶导数和偏最小二乘（PLS）处理，20个外部样品用于所建模型的验证，实际和预测的平均相对偏差<5%。
For all samples, the raw spectra were pretreated as second derivative and Norris derivative filter(7,5). partial least square (PLS) was used as the calibration algorithm.
应用推荐