Approach for Local Multi-Domain Cognition in Cognitive Network

During the evolution from cognitive radio to cognitive networks,the environment cognition extended from wireless environments to network and user environments.To understand the basic theory of Local Multi-Domain Cognition(LMDC),and to provide a theoretical basis for further study in cooperative multi-domain cognition and initiative multi-domain cognition,the LMDC is investigated in this paper.A Local Single-Domain Cognitive(LSDC)approach is first proposed based on multidimensional edge detection theory.This approach can divide the parameter space that describes the single-domain environment into different areas,and can represent each area with an identifier.Using this as a foundation,the single-domain environment is extended to multi-domain environments,and an LMDC approach is presented to describe the LMDC environment.The paper concludes by introducing two examples and the corresponding analysis to illustrate the feasibility of the proposed LMDC approach.

时间延迟估计算法及其在热电场景下的应用

热工对象往往都具有较大的延时性,实际生产往往采用热力试验的方法去确定具体控制对象的时间延迟等信息。我们提出一种基于皮尔逊相关系数的时间延迟估计算法,可以对某一特定热力过程的时间延迟进行在线计算。然后结合山西某电厂长距离主蒸汽管道两端温度进行时延评估,采用时间轴对齐的方式对主蒸汽管道的温度损失及其主要影响因素进行分析。