This paper proposes a new method to diagnose the system fault of the process industry based on the monitor data set of distributed control system(DCS). Firstly, it defines a homeomorphism product space named color pha...This paper proposes a new method to diagnose the system fault of the process industry based on the monitor data set of distributed control system(DCS). Firstly, it defines a homeomorphism product space named color phase space which is a Cartesian product of two-dimensional Euclidean space and three-dimensional color phase space. Secondly, it maps the DCS data to the color phase space in order to get a system color-spectrum which displays the inherent relationship of the whole system. Then, it diagnoses the system fault by observing the color change on the color-spectrum depending on the physiological characteristics that human's eyes are more sensitive for the color change than data change.展开更多
车联网通信通过多个车辆对车辆(vehicle to vehicle,V2V)链路复用同一车辆对基础设施(vehicle to infrastructure,V2I)链路的资源来缓解频谱短缺问题,但频谱复用会导致V2I通信服务质量下降,因此降低系统干扰、提高系统容量成为研究热点...车联网通信通过多个车辆对车辆(vehicle to vehicle,V2V)链路复用同一车辆对基础设施(vehicle to infrastructure,V2I)链路的资源来缓解频谱短缺问题,但频谱复用会导致V2I通信服务质量下降,因此降低系统干扰、提高系统容量成为研究热点。提出一种基于图着色和三维匹配的车联网资源分配算法,首先用图着色法对V2V链路分簇,然后求解V2I链路和V2V链路的发射功率,最后通过三维匹配算法对V2I链路、V2V簇和资源块进行信道资源的优化分配,从而降低使用同一资源的链路之间的干扰。理论分析及仿真结果表明,所提方法提高了V2I链路总和速率,并在相对较少的迭代次数下收敛到次优解。展开更多
基金the National Natural Science Foundation of China(No.51375375)
文摘This paper proposes a new method to diagnose the system fault of the process industry based on the monitor data set of distributed control system(DCS). Firstly, it defines a homeomorphism product space named color phase space which is a Cartesian product of two-dimensional Euclidean space and three-dimensional color phase space. Secondly, it maps the DCS data to the color phase space in order to get a system color-spectrum which displays the inherent relationship of the whole system. Then, it diagnoses the system fault by observing the color change on the color-spectrum depending on the physiological characteristics that human's eyes are more sensitive for the color change than data change.
文摘车联网通信通过多个车辆对车辆(vehicle to vehicle,V2V)链路复用同一车辆对基础设施(vehicle to infrastructure,V2I)链路的资源来缓解频谱短缺问题,但频谱复用会导致V2I通信服务质量下降,因此降低系统干扰、提高系统容量成为研究热点。提出一种基于图着色和三维匹配的车联网资源分配算法,首先用图着色法对V2V链路分簇,然后求解V2I链路和V2V链路的发射功率,最后通过三维匹配算法对V2I链路、V2V簇和资源块进行信道资源的优化分配,从而降低使用同一资源的链路之间的干扰。理论分析及仿真结果表明,所提方法提高了V2I链路总和速率,并在相对较少的迭代次数下收敛到次优解。