Closed Loop Vibrational Control: Theory and Applications

1993 ◽  
Author(s):  
Semyon M. Meerkov ◽  
Pierre T. Kabamba ◽  
Eng-Kee Poh
Keyword(s):  
Control Theory ◽  
Closed Loop ◽  
Vibrational Control

Control Theory for Closed-Loop Neurophysiology

2016 ◽  
pp. 35-52
Author(s):  
G. Kumar ◽  
J.T. Ritt ◽  
S. Ching
Keyword(s):  
Control Theory ◽  
Closed Loop

scholarly journals AGC of a multi sources power system with natural choice of power plants

2019 ◽  
Vol 7 (1) ◽  
pp. 105-128 ◽  
Author(s):  
Jitendra Kumar Garg ◽  
Anita Khosla ◽  
Nizamuddin Hakimuddin
Keyword(s):  
Control Theory ◽  
Power System ◽  
Case Studies ◽  
Power Plants ◽  
Closed Loop ◽  
Dynamic Performance ◽  
Thermal Power ◽  
Stability Margin ◽  
Thermal Power Plants ◽  
Natural Choice

This paper presents an application of optimal control theory in multi sources power system by considering natural choice of power plants participating in automatic generation control (AGC) scheme. However, for successful operation of large power system, the natural choices of generation suitable for AGC system are hydro and thermal power plants since gas and nuclear power plants are rarely participates in the AGC scheme. Therefore, this work presents design and implementation of proportional integral (PI) structured optimal AGC controller in the presence of hydro and thermal power plants by using state vector feedback control theory. Moreover, various case studies are identified to obtain: (i) Cost aspects of physical realization of optimal AGC controller, (ii) Closed loop system stability margin through patterns of eigenvalues and (iii) System dynamic performance. Further, results have shown that when optimal AGC scheme is implemented in power system, the dynamic performance of power system is outstanding over those obtained with genetic algorithms (GAs) tuned PI structured AGC controller. Besides, with optimal AGC controller, cheaper cost of control structure, increased in system closed loop stability margin and outstanding dynamic performance of power system have been found when lessening in hydro generation is replaced by generation from thermal power plants for various case studies under investigation.

scholarly journals Simple answers to usual questions about unusual forms of the Evans' root locus plot

2008 ◽  
Vol 19 (4) ◽  
pp. 444-449 ◽  
Author(s):  
L.H.A. Monteiro ◽  
J.J. Da Cruz
Keyword(s):  
Control Theory ◽  
Control Systems ◽  
Closed Loop ◽  
Closed Loop Control ◽  
Root Locus ◽  
Loop Control ◽  
Numerical Examples ◽  
Introductory Course ◽  
Classical Control ◽  
First Contact

After a first contact with Evans' root locus plots, in an introductory course about classical control theory, students usually pose questions for which the answers are not trivially found in the usual textbooks. Examples of such questions are: Can a branch intersect itself? Can two or more branches be coincident? Can a branch intersect its asymptote? In this paper devoted to helping teaching, numerical examples and an incremental property are used for answering some questions about unusual forms of root loci related to closed-loop control systems. In some cases, answering to these questions can be fundamental for making a correct sketch of a root locus.

Web Process Adaptation

2011 ◽  
pp. 245-253
Author(s):  
Kunal Verma
Keyword(s):  
Control Theory ◽  
Closed Loop ◽  
Academic Research ◽  
Open Loop ◽  
Research Framework ◽  
Important Concept ◽  
Process Adaptation

Adaptation is an important concept for Web processes. The author provides an overview of adaptation with respect to control theory and how it is applied to other contexts. Specifically the author focuses on open loop and closed loop adaptation. Then the cahpter discusses the current Web process standard WS-BPEL supports open loop adaptation. Finally, the author discusses an academic research framework METEOR-S, which supports closed loop adaptation.

The Early Development of Control Theory

1976 ◽  
Vol 98 (2) ◽  
pp. 109-118 ◽  
Author(s):  
A. T. Fuller
Keyword(s):  
Control Theory ◽  
Closed Loop ◽  
Block Diagram ◽  
Feedback System ◽  
Nyquist Diagram ◽  
System A ◽  
Integral Action ◽  
History Of ◽  
History Of Control ◽  
Diagram Techniques

The early history of control theory is explored, beginning with the contributions of Hooke and Huygens in the seventeenth century, and ending with Airy’s papers of 1840 and 1851. It is argued that, despite appearances to the contrary, Huygens’ speed control system is actually a feedback system. A proof is given that the Huygens-Hooke parabolic governor has integral action, thus eliminating offset. A detailed exposition of Airy’s techniques is given. It is shown that he used a disguised form of linearization. Airy’s system is also investigated using block diagram and Nyquist diagram techniques. The centrifugal governor is shown to have a tendency to resonance which adversely affects closed-loop stability; in agreement with Airy’s findings. Biographical notes on the main contributors are included in order to bring out the background and motivations of their theories.

Sign in / Sign up

Export Citation Format

Share Document