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在测量流体(主要是非牛顿流体)的粘度及其流变性能时,常采用加压型毛细管粘度计,该粘度计具有结构简单、测量方便、量限宽、便于清洗等优点。笔者就其测量原理及其在实际测量中的使用方法和注意事项进行了探讨。1加压型毛细管粘度计的测量原理1.1测量原理加压型毛细管粘度计(以 相似文献
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The output regulation of linear multi-agent systems with partial unmeasurable agents is investigated in this paper. All the agents except the exosystem can be classified into two groups. Agents in the first group can be measured by themselves and their neighbors. State variables are not fully accessible for direct communication and full order Luenberger observers are constructed for the unmeasurable agents. We give a state feedback control law to solve the output regulation problem under the communication topologies based on both measurable and unmeasurable agents. The heterogeneous agents’ synchronization problem is a general case of our results. Finally, examples are utilized to show the effectiveness of the obtained results. 相似文献
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Cluster exponential synchronization of a class of complex networks with hybrid coupling and time-varying delay
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This paper deals with the cluster exponential synchronization of a class ot complex networks wlm nyorm coupm~g and time-varying delay. Through constructing an appropriate Lyapunov-Krasovskii functional and applying the theory of the Kronecker product of matrices and the linear matrix inequality (LMI) technique, several novel sufficient conditions for cluster exponential synchronization are obtained. These cluster exponential synchronization conditions adopt the bounds of both time delay and its derivative, which are less conservative. Finally, the numerical simulations are performed to show the effectiveness of the theoretical results. 相似文献
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Output regulation for linear multi-agent systems with unmeasurable nodesOutput regulation for linear multi-agent systems with unmeasurable nodesOutput regulation for linear multi-agent systems with unmeasurable nodes
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The output regulation of linear multi-agent systems with partial unmeasurable agents is investigated in this paper. All the agents except the exosystem can be classified into two groups. Agents in the first group can be measured by themselves and their neighbors. State variables are not fully accessible for direct communication and full order Luenberger observers are constructed for the unmeasurable agents. We give a state feedback control law to solve the output regulation problem under the communication topologies based on both measurable and unmeasurable agents. The heterogeneous agents' synchronization problem is a general case of our results. Finally, examples are utilized to show the effectiveness of the obtained results. 相似文献
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