采用9点法对箱内片烟密度偏差率(Density Variation Rate,DVR)进行检测,对烟箱具有破坏性,而且是滞后性检测,无法解决在生产过程中箱内片烟DVR过大问题。为 .
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The ramp metering rate is determined by the PID controller whose parameters are tuned by fuzzy logic according to the density tracking error and error variation.
斜坡根据密度跟踪误差和误差变化情况，通过模糊逻辑对控制器参数进行调整，确定了测量速度。
Establishes a mathematic model, taking into account the variation of frost density and the decrease of airflow rate caused by frost layer.
针对平肋肋片管式换热器的结霜过程，建立了数学模型，考虑了霜层密度变化和霜层阻力引起空气流量减小等因素。
B. sinensis is more suitable for cultivating as good technological wood, as it exhibits medium growth rate, lower density but smaller radial variation;
伯乐树生长速度中等，木材密度略低，但其径向均匀性较高，宜作为优质的工艺材来培育；
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