检索结果-内蒙古大学图书馆

The use of interactivity in the controller design: loop shaping versus closed-loop shaping

IFAC-PapersOnLine 2018年第4期51卷 334-339页

作者： Díaz, José Manuel Dormido, Sebastián Costa-Castelló, Ramon Madrid28004 Spain Institut de Robòtica i Informàtica Industrial CSIC-UPC. Llorens i Artigas 4-6 Barcelona08028 Spain

Frequency domain is one of the most popular and powerful framework to design control system. Usually this procedure is done using the open-loop transfer function. In this work, it is explored the possibility to perform the controller design by closed-loop shaping. It is analyzed how graphical representation and interactivity can be used in this framework to help automatic control students during the learning process. © 2018

关键词： Controllers Automation Frequency domain analysis Graphic methods Closed loop shaping Control education Controller designs Frequency domains Graphical representations Interactivity loop shaping Open loop transfer functions

来源：评论

学校读者我要写书评

暂无评论

Adaptive Compensation of Contact-Induced Vibration in High Density HDD Servo Systems Using Peak Filter Method

Adaptive Compensation of Contact-Induced Vibration in High D...

引用

21st IEEE International Symposium on Industrial Electronics (ISIE)

作者： Xu, Jian-Xin Huang, Deqing Venkataramanan, Venkatakrishnan Huynh The Cat Tuong Natl Univ Singapore Dept ECE Singapore 117576 Singapore Data Storage Inst Singapore 117608 Singapore

ISBN: (纸本)9781467301589

In this paper, a phase lead peak filter (PLPF) design method is adopted to adaptively compensate contact-induced vibration (CIV) in high density hard disk drive (HDD) servo systems. Such kind of vibration is a new vibration source due to continuous contact of the read/write head with the media in HDDs, and its main characteristics are the time-varying phase and magnitude and the narrow-band frequency spectrum. In the PLPF based controller, a baseline feedback controller is first employed to stabilize the servo loop and add-on peak filters are then connected in parallel with the baseline controller to further suppress the specific vibrations. Meanwhile, a frequency identification algorithm is plugged-in simultaneously to meet the variation of central frequency of CIV. The proposed CIV compensation scheme has simple control structure, is capable of dealing with multiple vibration modes that may not be within the bandwidth of open-loop transfer function, and possesses remarkable robustness to CIV change. In the end, the performance of the proposed method in CIV compensation is validated by simulation and experiment.

关键词： adaptive compensation Servo systems Vibrations modes Control Architecture servo loop vibration source loop transfer functions High density

来源：评论

学校读者我要写书评

暂无评论

Evaluation of loop transfer Function Based Dynamic Testing of LDOs 1

Evaluation of Loop Transfer Function Based Dynamic Testing o...

引用

International Test Conference in Asia (ITC-Asia)

作者： Ince, Mehmet Yilmaz, Ender Jeong, Jae Woong Winemberg, Leroy Ozev, Sule Arizona State Univ Tempe AZ 85281 USA NXP Semicond Austin TX USA

ISBN: (纸本)9781538630518

Embedded power regulators, such as low dropout regulators (LDOs), are generally tested for DC behavior and are rarely characterized dynamically. However, LDO loop dynamics play an important role in the overall behavior of the system. Dynamic characterization of LDOs based directly on LDO specifications requires measurement of output transient response with a step input at various points in the circuit. Such characterization is both difficult and costly. Alternatively, LDOs can be characterized by measuring loop dynamics in the form of a transfer function. Since the system is highly non-linear, transfer function can be characterized around a given operating point in terms of poles and zeros. The stability of the system can be inferred from the loop transfer function. This indirect characterization is more feasible but may result in test escapes. In this paper, we investigate the dynamic LDO characterization by closed loop transfer function and evaluate the test coverage with respect to modeled faults in the circuit. We show that faults that are not detectable with DC tests only become detectable with dynamic testing. We also show that the majority of undetectable faults are redundant with regards to the overall operation in terms of step response.

关键词： Evaluation loop transfer Function Dynamic Testing dynamic testing loop transfer functions transfer functions test coverage step input faults Circuit faults

来源：评论

学校读者我要写书评

暂无评论

Design of Fractional-order Controller for Fractional-order Systems using Bode's Ideal loop transfer Function Method

Design of Fractional-order Controller for Fractional-order S...

引用

International Conference on Industrial Instrumentation and Control

作者： Patil, Diptee S. Patil, Mukesh D. Vyawahare, Vishwesh A. Ramrao Adik Inst Technol Dept Instrumentat Engn Nerul Navi Mumbai India Ramrao Adik Inst Technol Dept Elect Engn Nerul Navi Mumbai India

ISBN: (纸本)9781479971657

Fractional-order models have been found to provide a more realistic and compact representation to real world and man-made systems. On the other side, fractional-order controllers have proved their efficacy over the conventional integer-order controllers by providing more flexibility in the design as well as by guaranteeing a more robust closed-loop configuration. In this paper, Bode's ideal loop transfer function method is used to design fractional-order controllers for fractional-order plants. To prove the efficacy of the designed method, the design methodology is tested for stable and unstable fractional-order plants. From the simulation results obtained, it is observed that with the designed controller the closed-loop response of the system is improved and is more robust.

关键词： fractional order Instruction repertory loop transfer functions Controllers system response

来源：评论

学校读者我要写书评

暂无评论

NASA Technical Reports Server (Ntrs) 20040073477: Topmaker: a Technique for Automatic Multi-Block Topology Generation Using the Medial Axis

引用

2017年

NASA Technical Reports Server (Ntrs) 20040073477: Topmaker: a Technique for Automatic Multi-Block Topology Generation Using the Medial Axis by NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 20040073477: apexes automatic boundaries computational fluid dynamics computational grids generation grid generation (mathematics) heidmann, james d. [technical monitor] loop transfer functions medial multiblock grids nasa technical reports server (ntrs) rigby, david l. topology touch two dimensional models

来源：评论

学校读者我要写书评

暂无评论

NASA Technical Reports Server (Ntrs) 20050244825: Recent Developments in Hardware-in-the-loop Formation Navigation and Control

引用

2017年

NASA Technical Reports Server (Ntrs) 20050244825: Recent Developments in Hardware-in-the-loop Formation Navigation and Control by NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 20050244825: applications programs (computers) architecture (computers) computerized simulation computers control design analysis developments formation formation flying loop transfer functions luquette, richard j. mitchell, jason w. nasa technical reports server (ntrs) navigation spacecraft control transmitter receivers

来源：评论

学校读者我要写书评

暂无评论

NASA Technical Reports Server (Ntrs) 19940020694: Feedback Control Laws for Highly Maneuverable Aircraft

引用

2016年

NASA Technical Reports Server (Ntrs) 19940020694: Feedback Control Laws for Highly Maneuverable Aircraft by NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 19940020694: aircraft aircraft control balas, gary j. command guidance control control systems design control theory controllers error analysis feedback feedback control garrard, william l. highly maneuverable aircraft lateral control longitudinal control loop transfer functions nasa technical reports server (ntrs)

来源：评论

学校读者我要写书评

暂无评论

NASA Technical Reports Server (Ntrs) 20150003194: Extended Active Disturbance Rejection Controller

引用

2016年

NASA Technical Reports Server (Ntrs) 20150003194: Extended Active Disturbance Rejection Controller by NASA Technical Reports Server (Ntrs); NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 20150003194: accumulators (computers) active active control algorithms block diagrams control systems design control theory controller controllers disturbance disturbances dynamic models engine control feedback control flow charts gao, zhiqiang [inventor]tian, gang [inventor] industrial plants loop transfer functions matrices (mathematics) nasa technical reports server (ntrs) patents performance prediction perturbation perturbation theory phase control pointing control systems process control (industry) quality control rejection robot control state estimation taylor series time lag tracking problem

来源：评论

学校读者我要写书评

暂无评论

NASA Technical Reports Server (Ntrs) 19970017009: Method of Implementing Digital Phase-Locked loops

引用

2017年

NASA Technical Reports Server (Ntrs) 19970017009: Method of Implementing Digital Phase-Locked loops by NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 19970017009: bandwidth decay rates digital digital filters implementing loop transfer functions loops method nasa technical reports server (ntrs) phase locked systems stephens, scott a. [inventor] thomas, j. brooks [inventor]

来源：评论

学校读者我要写书评

暂无评论

NASA Technical Reports Server (Ntrs) 20130011343: Optimal Recursive Digital Filters for Active Bending Stabilization

引用

2016年

NASA Technical Reports Server (Ntrs) 20130011343: Optimal Recursive Digital Filters for Active Bending Stabilization by NASA Technical Reports Server (Ntrs); NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 20130011343: active active control bending control systems design digital digital filters filters flight control frequency response launch vehicles loop transfer functions low pass filters mixtures nasa technical reports server (ntrs) orr, jeb s. spacecraft launching

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：