Over the past two decades, synchronization, as an interesting collective behavior of complex dynamical networks, has been attracting much attention. To reveal and analyze the inherent mechanism of synchronization in c...Over the past two decades, synchronization, as an interesting collective behavior of complex dynamical networks, has been attracting much attention. To reveal and analyze the inherent mechanism of synchronization in complex dynamical networks with time delays in nodes, this paper attempts to use PD and PI control protocols to achieve synchronization. Based on a classical network model, we investigate the PD and PI control for synchronization of complex dynamical networks with delayed nodes and obtain some sufficient conditions. By using Lyapunov functions and appropriate state transformations, we prove that global synchronization can be achieved via the above control protocols. Finally, some simulation examples are illustrated to validate the effectiveness of the proposed theoretical results.展开更多
针对未知环境下如何提高移动机器人导航控制系统的柔性和鲁棒性,分析了复杂控制系统(Complex Control System)的体系结构,以异构多Agent系统理论为基础,提出了一种可在多个层次上动态重构的控制系统设计方案,有效地增强了移动机器人的...针对未知环境下如何提高移动机器人导航控制系统的柔性和鲁棒性,分析了复杂控制系统(Complex Control System)的体系结构,以异构多Agent系统理论为基础,提出了一种可在多个层次上动态重构的控制系统设计方案,有效地增强了移动机器人的适应能力,为实现控制系统跟随任务和环境变化而动态配置提供了一条可行的途径。设计方案在移动机器人MORCS-I上得到了初步的技术验证,部分实验数据展示了重构控制的实际效果,所具有的通用性表明其亦适合应用于其他类型的复杂控制系统。展开更多
针对一般不平衡状况下脉冲宽度调制(PWM)整流器电网电流质量差的问题,在正、负序电流和直流电压双闭环控制方案的基础上,提出了解耦的复矢量电流PI控制器设计方法。首先建立了一般不平衡的PWM整流器复矢量数学模型,计算了系统的有功和...针对一般不平衡状况下脉冲宽度调制(PWM)整流器电网电流质量差的问题,在正、负序电流和直流电压双闭环控制方案的基础上,提出了解耦的复矢量电流PI控制器设计方法。首先建立了一般不平衡的PWM整流器复矢量数学模型,计算了系统的有功和无功功率脉动,并以网侧高功率因数和直流电压稳定为控制目标,在复矢量模型的基础上分析了正、负序电流环路控制器的设计方案,并论证了电流控制环路的稳定性及其对系统硬件参数的适应性。最后构建了一般不平衡状况下10 k W的PWM整流器仿真和实验平台,对所提出控制策略的正确性进行了仿真和实验验证。结果表明,基于解耦的复矢量PI控制的整流器动、静态性能有明显优势。展开更多
基金supported by the National Key Research and Development Program of China(Grant No.2016YFB0800401)the National Natural Science Foundation of China(Grant Nos.61621003,61532020,and61472027)the US Army Research Office(Grant No.W911NF-17-1-0535)
文摘Over the past two decades, synchronization, as an interesting collective behavior of complex dynamical networks, has been attracting much attention. To reveal and analyze the inherent mechanism of synchronization in complex dynamical networks with time delays in nodes, this paper attempts to use PD and PI control protocols to achieve synchronization. Based on a classical network model, we investigate the PD and PI control for synchronization of complex dynamical networks with delayed nodes and obtain some sufficient conditions. By using Lyapunov functions and appropriate state transformations, we prove that global synchronization can be achieved via the above control protocols. Finally, some simulation examples are illustrated to validate the effectiveness of the proposed theoretical results.
文摘针对未知环境下如何提高移动机器人导航控制系统的柔性和鲁棒性,分析了复杂控制系统(Complex Control System)的体系结构,以异构多Agent系统理论为基础,提出了一种可在多个层次上动态重构的控制系统设计方案,有效地增强了移动机器人的适应能力,为实现控制系统跟随任务和环境变化而动态配置提供了一条可行的途径。设计方案在移动机器人MORCS-I上得到了初步的技术验证,部分实验数据展示了重构控制的实际效果,所具有的通用性表明其亦适合应用于其他类型的复杂控制系统。
文摘针对一般不平衡状况下脉冲宽度调制(PWM)整流器电网电流质量差的问题,在正、负序电流和直流电压双闭环控制方案的基础上,提出了解耦的复矢量电流PI控制器设计方法。首先建立了一般不平衡的PWM整流器复矢量数学模型,计算了系统的有功和无功功率脉动,并以网侧高功率因数和直流电压稳定为控制目标,在复矢量模型的基础上分析了正、负序电流环路控制器的设计方案,并论证了电流控制环路的稳定性及其对系统硬件参数的适应性。最后构建了一般不平衡状况下10 k W的PWM整流器仿真和实验平台,对所提出控制策略的正确性进行了仿真和实验验证。结果表明,基于解耦的复矢量PI控制的整流器动、静态性能有明显优势。
