H(infinity) and mu synthesis for full control of helicopter in hover

2000 ◽  
Author(s):  
Fayyaz Lohar
Keyword(s):  
H Infinity ◽  
Full Control ◽  
Mu Synthesis

scholarly journals Low-Complexity Decentralized Active Damping of One-Dimensional Structures

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Petr Hušek ◽  
Filip Svoboda ◽  
Martin Hromčík ◽  
Zbyněk Šika
Keyword(s):  
Damping Ratio ◽  
Stability Margin ◽  
Low Complexity ◽  
Active Damping ◽  
Fine Tuning ◽  
Control Performance ◽  
Control Laws ◽  
H Infinity ◽  
One Dimensional ◽  
Mu Synthesis

In the paper, we propose distributed feedback control laws for active damping of one-dimensional mechanical structures equipped with dense arrays of force actuators and position and velocity sensors. We consider proportional position and velocity feedback from the neighboring nodes with symmetric gains. Achievable control performance with respect to stability margin and damping ratio is discussed. Compared to full-featured complex controllers obtained by modern design methods like LQG, H-infinity, or mu-synthesis, these simplistic controllers are more suitable for experimental fine tuning and are less case-dependent, and they shall be easier to implement on the target future smart-material platforms.

scholarly journals Hypersonic vehicle control law development using H infinity and mu-synthesis

1992 ◽  
Author(s):  
IRENE GREGORY ◽  
JOHN MCMINN ◽  
JOHN SHAUGHNESSY ◽  
RAJIV CHOWDHRY
Keyword(s):  
Vehicle Control ◽  
Hypersonic Vehicle ◽  
Control Law ◽  
H Infinity ◽  
Mu Synthesis

Nonlinear Scheduling Approach for H-Infinity/Mu-Synthesis Controllers

1992 ◽  
Author(s):  
Robert T. Reichert ◽  
Robert A. Nichols ◽  
Wilson J. Rugh
Keyword(s):  
H Infinity ◽  
Mu Synthesis

scholarly journals H infinity and Mu -synthesis Design of Coupled Tanks Level Control

2020 ◽  
Author(s):  
mustefa jibril ◽  
Messay Tadese ◽  
Eliyas Alemayehu
Keyword(s):  
Control System ◽  
Water Level ◽  
Sine Wave ◽  
Reference Level ◽  
Level Control ◽  
H Infinity ◽  
Level Control System ◽  
Mu Synthesis ◽  
Simulation Results ◽  
Tank Water

In this paper, the design and analysis of coupled tank water level control system is done using robust control theory. The main aim of this work is to improve level controlling mechanisms in industries and household areas. In this paper, H and μ synthesis controllers are designed to improve the level control system. The coupled tank water level control system is designed using the proposed controllers comparison and tested for tracking a reference level signals (step, sine wave and random) and simulation results have been analyzed successfully. Finally the comparative simulation results prove the effectiveness of the proposed coupled tank water level control system with H controller for improving the tracking mechanism performance of the system.

Automated electron tomography: from data collection to image processing

1995 ◽  
Vol 53 ◽  
pp. 26-27
Author(s):  
Weiping Liu ◽  
Jennifer Fung ◽  
W.J. de Ruijter ◽  
Hans Chen ◽  
John W. Sedat ◽  
...  
Keyword(s):  
Image Processing ◽  
Data Collection ◽  
Structural Information ◽  
Imaging Technique ◽  
Electron Tomography ◽  
Ccd Camera ◽  
Automated Data Collection ◽  
Full Control ◽  
Transmission Electron ◽  
Amorphous Structures

Electron tomography is a technique where many projections of an object are collected from the transmission electron microscope (TEM), and are then used to reconstruct the object in its entirety, allowing internal structure to be viewed. As vital as is the 3-D structural information and with no other 3-D imaging technique to compete in its resolution range, electron tomography of amorphous structures has been exercised only sporadically over the last ten years. Its general lack of popularity can be attributed to the tediousness of the entire process starting from the data collection, image processing for reconstruction, and extending to the 3-D image analysis. We have been investing effort to automate all aspects of electron tomography. Our systems of data collection and tomographic image processing will be briefly described.To date, we have developed a second generation automated data collection system based on an SGI workstation (Fig. 1) (The previous version used a micro VAX). The computer takes full control of the microscope operations with its graphical menu driven environment. This is made possible by the direct digital recording of images using the CCD camera.

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