This paper introduces a hierarchical real-time environment for developing ship-bornefire-control system. Advanced computer networks are used to simulate the system with the requiredengagement scenario, including own-s...This paper introduces a hierarchical real-time environment for developing ship-bornefire-control system. Advanced computer networks are used to simulate the system with the requiredengagement scenario, including own-ship and parameters, and data processing and transmission,mission calculation, graphical supervision and gunnery ballistics outputting. The simulation systemis able to receive instruction from, or send information to the command-control center. Furthermore,the system can also be used to compare various designed schemes and analyze the accuracy andeffectiveness of the system.展开更多
公路隧道火灾通风控制对于抑制高温烟气扩散与保障运营安全至关重要。针对现有控制系统依赖均匀断面风速假设而难以直接检测和控制的问题,提出以通风量为控制输入、以顶棚温度为反馈的方案,实现烟气逆流的实时有效控制。通过建立通风作...公路隧道火灾通风控制对于抑制高温烟气扩散与保障运营安全至关重要。针对现有控制系统依赖均匀断面风速假设而难以直接检测和控制的问题,提出以通风量为控制输入、以顶棚温度为反馈的方案,实现烟气逆流的实时有效控制。通过建立通风作用下顶棚温度动态响应系统,基于一阶惯性加纯滞后系统(First Order Plus Dead Time,FOPDT)模型假设,采用阶跃通风量激发系统响应,研究在不同火灾和不同通风量下顶棚温度的响应特性。根据通风量对顶棚温度的调控作用,提出动态温度响应分类方法,得出不同火灾热释放速率下顶棚温度响应的通风量范围。结果表明,阶跃通风量在接近临界值(分类Ⅱ)时,烟气逆流长度得到控制,顶棚温度对通风量的响应符合FOPDT系统特征,模型决定系数R2可达0.96;增益系数|K|与通风量呈正相关,滞后时间τ与通风量呈负相关。展开更多
文摘This paper introduces a hierarchical real-time environment for developing ship-bornefire-control system. Advanced computer networks are used to simulate the system with the requiredengagement scenario, including own-ship and parameters, and data processing and transmission,mission calculation, graphical supervision and gunnery ballistics outputting. The simulation systemis able to receive instruction from, or send information to the command-control center. Furthermore,the system can also be used to compare various designed schemes and analyze the accuracy andeffectiveness of the system.
文摘公路隧道火灾通风控制对于抑制高温烟气扩散与保障运营安全至关重要。针对现有控制系统依赖均匀断面风速假设而难以直接检测和控制的问题,提出以通风量为控制输入、以顶棚温度为反馈的方案,实现烟气逆流的实时有效控制。通过建立通风作用下顶棚温度动态响应系统,基于一阶惯性加纯滞后系统(First Order Plus Dead Time,FOPDT)模型假设,采用阶跃通风量激发系统响应,研究在不同火灾和不同通风量下顶棚温度的响应特性。根据通风量对顶棚温度的调控作用,提出动态温度响应分类方法,得出不同火灾热释放速率下顶棚温度响应的通风量范围。结果表明,阶跃通风量在接近临界值(分类Ⅱ)时,烟气逆流长度得到控制,顶棚温度对通风量的响应符合FOPDT系统特征,模型决定系数R2可达0.96;增益系数|K|与通风量呈正相关,滞后时间τ与通风量呈负相关。
