In this paper a recursive state-space model identification method is proposed for non-uniformly sampled systems in industrial applications. Two cases for measuring all states and only output(s) of such a system are co...In this paper a recursive state-space model identification method is proposed for non-uniformly sampled systems in industrial applications. Two cases for measuring all states and only output(s) of such a system are considered for identification. In the case of state measurement, an identification algorithm based on the singular value decomposition(SVD) is developed to estimate the model parameter matrices by using the least-squares fitting. In the case of output measurement only, another identification algorithm is given by combining the SVD approach with a hierarchical identification strategy. An example is used to demonstrate the effectiveness of the proposed identification method.展开更多
针对含物料自动运输环节(automated material handling unit,AMHU)的个性化定制生产系统性能分析问题,文章着重考虑其随机批量运输的特点,提出了该系统的开排队网建模方法。对含AMHU的生产系统进行了描述,并建立其排队网模型;采用改良...针对含物料自动运输环节(automated material handling unit,AMHU)的个性化定制生产系统性能分析问题,文章着重考虑其随机批量运输的特点,提出了该系统的开排队网建模方法。对含AMHU的生产系统进行了描述,并建立其排队网模型;采用改良状态空间分解法,建立了节点状态空间模型,求解并计算出生产系统的性能指标值;与生产系统仿真模型的实验结果进行对比,验证了所提方法的精确性和有效性,为进一步优化配置该类生产系统的资源奠定了基础。展开更多
First,the state space tree method for finding communication network overall re-liability is presented.It directly generates one disjoint tree multilevel polynomial of a networkgraph.Its advantages are smaller computat...First,the state space tree method for finding communication network overall re-liability is presented.It directly generates one disjoint tree multilevel polynomial of a networkgraph.Its advantages are smaller computational effort(its computing time complexity is O(en_l),where e is the number of edges and n_l is the number of leaves)and shorter resulting expression.Second,based on it an exact decomposition algorithm for finding communication network overallreliability is presented by applying the hypergraph theory.If we use it to carry out the m-timedecomposition of a network graph,the communication network scale which can be analyzed by acomputer can be extended to m-fold.展开更多
基金Supported in part by the National Thousand Talents Program of Chinathe National Natural Science Foundation of China(61473054)the Fundamental Research Funds for the Central Universities of China
文摘In this paper a recursive state-space model identification method is proposed for non-uniformly sampled systems in industrial applications. Two cases for measuring all states and only output(s) of such a system are considered for identification. In the case of state measurement, an identification algorithm based on the singular value decomposition(SVD) is developed to estimate the model parameter matrices by using the least-squares fitting. In the case of output measurement only, another identification algorithm is given by combining the SVD approach with a hierarchical identification strategy. An example is used to demonstrate the effectiveness of the proposed identification method.
文摘针对含物料自动运输环节(automated material handling unit,AMHU)的个性化定制生产系统性能分析问题,文章着重考虑其随机批量运输的特点,提出了该系统的开排队网建模方法。对含AMHU的生产系统进行了描述,并建立其排队网模型;采用改良状态空间分解法,建立了节点状态空间模型,求解并计算出生产系统的性能指标值;与生产系统仿真模型的实验结果进行对比,验证了所提方法的精确性和有效性,为进一步优化配置该类生产系统的资源奠定了基础。
文摘First,the state space tree method for finding communication network overall re-liability is presented.It directly generates one disjoint tree multilevel polynomial of a networkgraph.Its advantages are smaller computational effort(its computing time complexity is O(en_l),where e is the number of edges and n_l is the number of leaves)and shorter resulting expression.Second,based on it an exact decomposition algorithm for finding communication network overallreliability is presented by applying the hypergraph theory.If we use it to carry out the m-timedecomposition of a network graph,the communication network scale which can be analyzed by acomputer can be extended to m-fold.
