The classical D-type iterative learning control law depends crucially on the relative degreeof the controlled system, high order di?erential iterative learning law must be taken for systems withhigh order relative deg...The classical D-type iterative learning control law depends crucially on the relative degreeof the controlled system, high order di?erential iterative learning law must be taken for systems withhigh order relative degree. It is very di?cult to ascertain the relative degree of the controlled systemfor uncertain nonlinear systems. A first-order D-type iterative learning control design method ispresented for a class of nonlinear systems with unknown relative degree based on dummy model inthis paper. A dummy model with relative degree 1 is constructed for a class of nonlinear systemswith unknown relative degree. A first-order D-type iterative learning control law is designed basedon the dummy model, so that the dummy model can track the desired trajectory perfectly, and thecontrolled system can track the desired trajectory within a certain error. The simulation exampledemonstrates the feasibility and e?ectiveness of the presented method.展开更多
Some typical structural schemes of learning control have been investigated.The schemes involve the pattern recognitionbased learning control,iterative learning control,repetitive learning control,and connectionist lea...Some typical structural schemes of learning control have been investigated.The schemes involve the pattern recognitionbased learning control,iterative learning control,repetitive learning control,and connectionist learning control,etc.This study focuses on the control mechanism and provides a basis for potential applications.Most of the structural schemes have been applied to various control fields.展开更多
二阶选择谐波重复控制(second order selective harmonic repetitive control, SOSHRC)策略因其良好的频率适应性和动态性能被广泛应用于并网逆变器控制中。针对传统SOSHRC策略的稳定性分析方法复杂、稳定性标准较为保守等问题,提出一...二阶选择谐波重复控制(second order selective harmonic repetitive control, SOSHRC)策略因其良好的频率适应性和动态性能被广泛应用于并网逆变器控制中。针对传统SOSHRC策略的稳定性分析方法复杂、稳定性标准较为保守等问题,提出一种新型二阶选择谐波重复-比例控制(second order selective harmonic repetitive control and proportional control, SOSHRC-PC)。首先,设计新型SOSHRC的结构和原理,并介绍新型SOSHRC-PC控制策略。然后,分析新型SOSHRC-PC控制器的稳定性和参数设计方法。最后,搭建基于新型二阶(6k±1)次谐波重复-比例控制的三相并网逆变器模型,仿真结果表明所提的控制策略具有良好的稳态和动态性能。展开更多
基金Supported by the Scientific Research Foundation for the Returned 0verseas Chinese Scholars, State Education Ministry, and National Natural Science Foundation of China （60474005）
文摘The classical D-type iterative learning control law depends crucially on the relative degreeof the controlled system, high order di?erential iterative learning law must be taken for systems withhigh order relative degree. It is very di?cult to ascertain the relative degree of the controlled systemfor uncertain nonlinear systems. A first-order D-type iterative learning control design method ispresented for a class of nonlinear systems with unknown relative degree based on dummy model inthis paper. A dummy model with relative degree 1 is constructed for a class of nonlinear systemswith unknown relative degree. A first-order D-type iterative learning control law is designed basedon the dummy model, so that the dummy model can track the desired trajectory perfectly, and thecontrolled system can track the desired trajectory within a certain error. The simulation exampledemonstrates the feasibility and e?ectiveness of the presented method.
文摘Some typical structural schemes of learning control have been investigated.The schemes involve the pattern recognitionbased learning control,iterative learning control,repetitive learning control,and connectionist learning control,etc.This study focuses on the control mechanism and provides a basis for potential applications.Most of the structural schemes have been applied to various control fields.
文摘二阶选择谐波重复控制(second order selective harmonic repetitive control, SOSHRC)策略因其良好的频率适应性和动态性能被广泛应用于并网逆变器控制中。针对传统SOSHRC策略的稳定性分析方法复杂、稳定性标准较为保守等问题,提出一种新型二阶选择谐波重复-比例控制(second order selective harmonic repetitive control and proportional control, SOSHRC-PC)。首先,设计新型SOSHRC的结构和原理,并介绍新型SOSHRC-PC控制策略。然后,分析新型SOSHRC-PC控制器的稳定性和参数设计方法。最后,搭建基于新型二阶(6k±1)次谐波重复-比例控制的三相并网逆变器模型,仿真结果表明所提的控制策略具有良好的稳态和动态性能。
基金Supported by the National Natural Science Foundation of China (62173150)the Science and Technology Innovation Project of Shunde,Foshan(2230218004224)the Guangdong Basic and Applied Basic Research Foundation-the Key Joint Research Project (2022B1515120003)。
