面向CPS的高速公路凝冰短时预测与主动式防冰控制
发布时间：2018-11-19 11:06
【摘要】：针对影响中国高速公路行车安全与运营效率的冰雪冻雨气象灾害,基于信息物理系统(CPS)理论,设计了面向高速公路路表凝冰短时预测与主动式防冰控制的CPS模型.不同于传统的事后处置方式,该CPS可以通过主动预测和预先处置手段,防止冰雪灾害发生或降低其危害程度.围绕该CPS模型,提出了其信息世界的路表凝冰短时预测算法,并设计了相应的主动式防冰控制策略.其中,凝冰短时预测算法基于热力学理论建模空气温度和路表温度的耦合变化关系,并从凝冰事件的发生可能性及强度两个方面对预测的凝冰风险进行描述;防冰控制策略主要针对一款自研的以喷撒融雪剂方式防冰融冰的CPS物理世界装置,根据凝冰风险的可能性及强度分量远程控制该装置按照一定的模式进行工作.基于实测数据的实验分析以及针对实际路段的示范应用表明:该CPS具有较精确的凝冰预测精度,30min内的平均预测误差约为±0.2℃;融冰处置可以覆盖高速公路车道约3/4的有效行车区域,能够事先避免凝冰或积雪形成或主动降低其危害,因此在我国高速公路的信息化与效率提升建设当中具有较高的实用价值.
[Abstract]:Based on the theory of information physical system (CPS), a CPS model for short-term prediction and active anti-icing control of freeway surface ice is designed, which affects the safety and operation efficiency of freeway in China. Different from the traditional post-disposal method, the CPS can prevent the occurrence of ice and snow disaster or reduce its harm degree by active prediction and pre-disposal. Based on the CPS model, the short-time prediction algorithm of road surface ice coagulation is proposed, and the corresponding active anti-ice control strategy is designed. Based on the thermodynamic theory, the short-time prediction algorithm is used to model the coupling relationship between air temperature and road surface temperature, and to describe the ice coagulation risk from two aspects: the possibility and the intensity of the ice coagulation event. The anti-ice control strategy is mainly aimed at a self-developed CPS physical world device which sprays snow melting agent to prevent ice melting. According to the possibility of ice agglomeration risk and its intensity component, the device can be remotely controlled to work according to a certain mode. The experimental analysis based on the measured data and the demonstration application to the actual section show that the CPS has more accurate prediction accuracy of ice coagulation, and the average prediction error in 30min is about 卤0.2 鈩，
本文编号：2342116
[Abstract]:Based on the theory of information physical system (CPS), a CPS model for short-term prediction and active anti-icing control of freeway surface ice is designed, which affects the safety and operation efficiency of freeway in China. Different from the traditional post-disposal method, the CPS can prevent the occurrence of ice and snow disaster or reduce its harm degree by active prediction and pre-disposal. Based on the CPS model, the short-time prediction algorithm of road surface ice coagulation is proposed, and the corresponding active anti-ice control strategy is designed. Based on the thermodynamic theory, the short-time prediction algorithm is used to model the coupling relationship between air temperature and road surface temperature, and to describe the ice coagulation risk from two aspects: the possibility and the intensity of the ice coagulation event. The anti-ice control strategy is mainly aimed at a self-developed CPS physical world device which sprays snow melting agent to prevent ice melting. According to the possibility of ice agglomeration risk and its intensity component, the device can be remotely controlled to work according to a certain mode. The experimental analysis based on the measured data and the demonstration application to the actual section show that the CPS has more accurate prediction accuracy of ice coagulation, and the average prediction error in 30min is about 卤0.2 鈩，
本文编号：2342116
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2342116.html
