检索结果-南通市图书馆

Adaptive Differentiators via Second Order Sliding mode for a Fixed Wing Aircraft

Computer modeling in Engineering & Sciences 2015年第3期104卷 159-184页

作者： m.Zaouche A.Beloula R.Louali S.Bouaziz m.hamerlain Laboratoire Controle et Commande Ecole Militaire PolytechniqueBP 17 Bordj El BahriAlger16000Algeria University of Paris-Sud IEF UMR 8622F-91405 OrsayFrance Center of Development of Advanced Technologies Alger16000Algeria

Safety automation of complex mobile systems is a current topic issue in industry and research laboratories,especially in *** dynamic models of these systems are nonlinear,multi-Input multi-Output(mImO)and tightly *** nonlinearity resides in the dynamic equations and also in the aerodynamic coefficients’*** paper is devoted to developing the piloting law based on the combination of the robust differentiator with a dynamic adaptation of the gains and the robust controller via second order sliding mode,by using an aircraft in virtual simulated *** deal with the design of an autopilot controller,we propose an environment framework based on a Software In the Loop(SIL)methodology and we use microsoft Flight Simulator(FS-2004)as the environment for plane *** first order sliding mode control may be an appropriate solution to this piloting ***,its implementation generates a chattering phenomenon and a singularity *** overcome these problems,a new version of the adaptive differentiators for second order sliding modes is proposed and used for *** the sliding mode algorithm,higher gains values may be used to improve accuracy;however this leads to an amplification of noise in the estimated signals.A good tradeoff between these two criteria(accuracy,robustness to noise ratio)is difficult to *** the one hand,these values must increase the gains in order to derive a signal sweeping of some frequency *** the other hand,low gains values have to be imposed to reduce noise ***,our goal is to develop a differentiation algorithm in order to have a good compromise between error and robustness to noise *** fit this requirement,a new version of differentiators with a higher order sliding modes and a dynamic adaptation of the gains,is proposed:the first order differentiator for the control of longitudinal speed and the second order differentiator for the control of the Euler ang

关键词： Adaptive differentiators second order sliding modes Dynamic adaptation of the gains microsoft Flight Simulator

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Design of high-speed and low-power finite-word-length PID controllers

引用

Control Theory and Technology 2014年第1期12卷 68-83页

作者： A. K. OUDJIDA N. CHAILLET A. LIACHA m. L. BERRANDJIA m. hamerlain Centre de Developpement des Technologies Avancees Algiers Algeria FEmTO-ST Institute Besancon France

ASIC or FPGA implementation of a finite word-length PID controller requires a double expertise： in control system and hardware design. In this paper, we only focus on the hardware side of the problem. We show how to design configurable fixed-point PIDs to satisfy applications requiring minimal power consumption, or high control-rate, or both together. As multiply operation is the engine of PID, we experienced three algorithms： Booth, modified Booth, and a new recursive multi-bit multiplication algorithm. This later enables the construction of finely grained PID structures with bit-level and unit-time precision. Such a feature permits to tailor the PID to the desired performance and power budget. All PIDs are implemented at register-transfer4evel （RTL） level as technology-independent reusable IP-cores. They are reconfigurable according to two compilemtime constants： set-point word-length and latency. To make PID design easily reproducible, all necessary implementation details are provided and discussed.

关键词： Design-reuse Embedded finite-word-length (FWL) controllers Intellectual property (IP) Linear time invariant (LTI) systems Low-power and speed optimization PID

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

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

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

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：