检索结果-南通市图书馆

Adaptive neural network based boundary control of a flexible marine riser system with output constraints

Frontiers of Information Technology & Electronic Engineering 2022年第8期23卷 1229-1238页

作者： Chuyang YU Xuyang LOU Yifei MA Qian YE Jinqi ZHANG Key Laboratory of Advanced Process Control for Light Industry(Ministry of Education) Jiangnan UniversityWuxi 214122China College of Internet of Things Technology Wuxi Institute of TechnologyWuxi 214122China Wuxi Good Cloud IoT Technology Co. Ltd.Wuxi 214196China

In this study,we develop an adaptive neural network based boundary control method for a flexible marine riser system with unknown nonlinear disturbances and output constraints to suppress vibrations.We begin with describing the dynamic behavior of the riser system using a distributed parameter system with partial differential equations.To compensate for the effect of nonlinear disturbances,we construct a neural network based boundary controller using a radial basis neural network to reduce vibrations.Under the proposed boundary controller,the state of the riser is guaranteed to be uniformly bounded based on the Lyapunov method.The proposed methodology provides a way to integrate neural networks into boundary control for other flexible robotic manipulator systems.Finally,numerical simulations are given to demonstrate the effectiveness of the proposed control method.

关键词： Marine riser system Partial differential equation Neural network Output constraint Boundary control unknown disturbance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Adaptive feedforward cancellation strategy for unknown and time-varying disturbance with changing plant

Adaptive feedforward cancellation strategy for unknown and t...

引用

第37届中国控制会议

作者： Jinchun Liu Chunhui Zhang Huijie Shen Qiwei He College of Power engineering Naval University of Engineering

This paper addresses an extended gradient-based adaptive feedforward cancellation（AFC） approach for attenuation or rejection of unknown and time varying disturbance without reference available for changing plant. In this study, an extended AFC（E-AFC） algorithm is proposed based on gradient approach. Convergence property of the E-AFC is investigated by using averaging theory and linear approximation. By introducing the division operations of magnitude and plant, improved E-AFC（IE-AFC） algorithm is derived and its performance dependence on the unknown disturbance magnitude and plant property is removed compared to the E-AFC algorithm. Numerous simulations are conducted to evaluate its superior performance compared to the conventional algorithms.

关键词： Adaptive feedforward cancellation averaging theory unknown disturbance

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

QFT Controller Design for DDEH Servo Rocket Rudder

QFT Controller Design for DDEH Servo Rocket Rudder

引用

2009中国控制与决策会议

作者： SU wenhai~1,JING jihai~1 LIU Tao ~2 1.Harbin Institute of Technology,Harbin,Heilongjiang,150001,Republic of Chin School of Automobile Engineering,Harbin Institute of Technology,Weihai,264209,China

＜正＞Aiming at the rapidity control problem of Direct Drive Electro-Hydraulic（DDEH） servo rocket rudder,a design method of Quantitative Feedback Theory（QFT） controller with friction torque dynamic compensation is proposed.The QFT controller is introduced to solve the problem of the uncertain parameter and external disturbances of the system.After creating the DDEH servo rocket rudder’s model,the controller was designed based on QFT,in which the input pre-filter transfer function F（s） and proper controller G（s） are designed.The simulation results show that the proposed method has good control performance to attenuate the parameters perturbation and external disturbance, enhances systemic robust performance and unknown disturbance can also be greatly compensated.

关键词： Rocket Rudder Quantitative Feedback Theory Direct Drive Electro-Hydraulic mathematical model Robust control unknown disturbance

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：