ISA100.11 a industrial wireless network standard is based on a deterministic scheduling mechanism.For the timeslot delay caused by deterministic scheduling,a routing algorithm is presented for industrial environments....ISA100.11 a industrial wireless network standard is based on a deterministic scheduling mechanism.For the timeslot delay caused by deterministic scheduling,a routing algorithm is presented for industrial environments.According to timeslot,superframe,links,channel and data retransmission of deterministic scheduling mechanisms that affect the design of the routing algorithm,the algorithm selects the link quality,timeslot delay and retransmission delay as the routing criteria and finds the optimum communication path by k shortest paths algorithm.Theoretical analysis and experimental verification show that the optimal paths selected by the algorithm not only have high link quality and low retransmission delay,but also meet the requirements of the deterministic scheduling.The algorithm can effectively solve the problem of packet loss and transmission delay during data transmission,and provide a valuable solution for efficient data transmission based on determinacy.展开更多
直升机大气数据系统是飞行员和地面指挥人员、试飞测试人员掌握飞行器的飞行状态和飞行环境的重要数据来源。其主要测量总压、静压、大气静温、大气总温等,并基于部分大气模型假设、理论原理,以获取直升机的指示空速、爬升速度、气压高...直升机大气数据系统是飞行员和地面指挥人员、试飞测试人员掌握飞行器的飞行状态和飞行环境的重要数据来源。其主要测量总压、静压、大气静温、大气总温等,并基于部分大气模型假设、理论原理,以获取直升机的指示空速、爬升速度、气压高度、大气温度等重要状态参数。大气模型基于国际标准大气(ISA),见图1和理想气体假设见图2。国际标准大气是指:在离地高度50km以下,采用ISA模型;在离地50~70km空间大气,采用临界标准大气(Interim Standard Atmosphere)。展开更多
基金Supported by the National Natural Science Foundation of China(No.61301125)the National High Technology Research and Development Programme of China(No.0AA0401028003)+2 种基金National Science and Technology Major Project(No.2013ZX03005005)the Fundamental and Advanced Research Program of Chongqing(No.cstc2013jcyjA40008)the Youth Top-notch Talent Support Program of Chongqing(No.2013-139)
文摘ISA100.11 a industrial wireless network standard is based on a deterministic scheduling mechanism.For the timeslot delay caused by deterministic scheduling,a routing algorithm is presented for industrial environments.According to timeslot,superframe,links,channel and data retransmission of deterministic scheduling mechanisms that affect the design of the routing algorithm,the algorithm selects the link quality,timeslot delay and retransmission delay as the routing criteria and finds the optimum communication path by k shortest paths algorithm.Theoretical analysis and experimental verification show that the optimal paths selected by the algorithm not only have high link quality and low retransmission delay,but also meet the requirements of the deterministic scheduling.The algorithm can effectively solve the problem of packet loss and transmission delay during data transmission,and provide a valuable solution for efficient data transmission based on determinacy.
文摘直升机大气数据系统是飞行员和地面指挥人员、试飞测试人员掌握飞行器的飞行状态和飞行环境的重要数据来源。其主要测量总压、静压、大气静温、大气总温等,并基于部分大气模型假设、理论原理,以获取直升机的指示空速、爬升速度、气压高度、大气温度等重要状态参数。大气模型基于国际标准大气(ISA),见图1和理想气体假设见图2。国际标准大气是指:在离地高度50km以下,采用ISA模型;在离地50~70km空间大气,采用临界标准大气(Interim Standard Atmosphere)。
