Under population follow normal distribution hypothesis, designing combine median-range adaptive control charts with variable sampling interval, variable sample size and variable control limit .
在假设总体服从正态分布的条件下，设计了抽样区间，样本容量和控制限都变化的全变化参数的中位值-极差联合控制图。
This paper discussed a few research method about physical chemistry, such as scientific abstract, ideal mode, essential show, limit inference, relative number, variable control and so on.
本文讨论了物理化学中的几种研究方法，如科学抽象法、理想模型法、本质揭示法、极限外推法、相对数值法和控制变量法等。
When the arm runs to the upper and lower two limit position, respectively press the lower limit switch, cut off the main control circuit, variable amplitude motor parking, to limit the role.
当臂杆运行到上下两个极限位置时，分别压下限位开关，切断主控电路，变幅电机停车，达到限位的作用。
Therefore, an effective combination of ramp metering and variable speed limit control is important to achieve a good performance.
由此，匝道调节率与可变速度限制间高效的联合控制对于提高道路性能显得尤为重要。
Because of the limit in modern industry sites, the frequency of the process variables detect is different. We can resolve the problem by multi frequency and multi variable control.
在工业现场由于条件的限制，很多过程变量需要的检测频率并不一样，从而带来了多频多变量的控制问题。
Due to the limit of traditional UAV navigation control, this paper puts forward a kind of navigation control system that is based on the strategy of multi-model variable structure intelligent control.
针对传统无人机导航控制的局限性，提出基于多模变结构智能控制策略的导航控制系统。
The critical problem in highway systems was discussed, and action of the main variable speed-limit control of the surveillance and control system of highway was analyzed.
阐述了高速公路运行中存在的主要问题，分析了可变限速控制在高速公路监控系统中所起到的作用。
The control for speed limit on expressway is a nonlinear and time variable system, it is difficult to simulate with a mathematical model. A neuro-fuzzy network is proposed to solve the problem.
高速公路限速控制是一个非线性时变系统，难于用数学模型准确建模，提出一种模糊神经网络实现限速控制。
When the traffic demand is too high that ramp metering is not effective anymore, the variable speed limit control is needed to relieve the congestion.
但是当高速公路严重拥挤时，匝道控制不再有效，需结合主线可变限速控制，以缓解交通拥挤。
Study shows that, these methods of the on-ramp control and the main variable speed-limit control can effectively relieve the highway peak traffic congestion.
研究表明，通过高速公路入口匝道调节控制以及主线可变限速控制，能够有效缓解高速公路高峰期交通拥挤状况。
Study shows that, these methods of the on-ramp control and the main variable speed-limit control can effectively relieve the highway peak traffic congestion.
研究表明，通过高速公路入口匝道调节控制以及主线可变限速控制，能够有效缓解高速公路高峰期交通拥挤状况。
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