Frequency domain change detection in closed loop

1994 ◽  
Author(s):  
A.C. Jenssen
Keyword(s):  
Change Detection ◽  
Frequency Domain ◽  
Closed Loop

scholarly journals A closed-loop frequency domain PI retuning technique for multivariable systems

2021 ◽  
Vol 54 (3) ◽  
pp. 463-468
Author(s):  
Anna Paula V de A Aguiar ◽  
George Acioli Júnior ◽  
Péricles R Barros ◽  
Angelo Perkusich
Keyword(s):  
Frequency Domain ◽  
Closed Loop ◽  
Multivariable Systems

scholarly journals Simplified Fractional Order Controller Design Algorithm

Mathematics ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 1166 ◽  
Author(s):  
Eva-Henrietta Dulf
Keyword(s):  
Frequency Domain ◽  
Fractional Order ◽  
Closed Loop ◽  
Controller Design ◽  
Process Models ◽  
System Of Nonlinear Equations ◽  
Design Algorithm ◽  
Wide Range ◽  
Fractional Order Controller ◽  
Tuning Rules

Classical fractional order controller tuning techniques usually establish the parameters of the controller by solving a system of nonlinear equations resulted from the frequency domain specifications like phase margin, gain crossover frequency, iso-damping property, robustness to uncertainty, etc. In the present paper a novel fractional order generalized optimum method for controller design using frequency domain is presented. The tuning rules are inspired from the symmetrical optimum principles of Kessler. In the first part of the paper are presented the generalized tuning rules of this method. Introducing the fractional order, one more degree of freedom is obtained in design, offering solution for practically any desired closed-loop performance measures. The proposed method has the advantage that takes into account both robustness aspects and desired closed-loop characteristics, using simple tuning-friendly equations. It can be applied to a wide range of process models, from integer order models to fractional order models. Simulation results are given to highlight these advantages.

An Approach to Automated Deburring by Robot Manipulators

1986 ◽  
Vol 108 (4) ◽  
pp. 354-359 ◽  
Author(s):  
H. Kazerooni ◽  
J. J. Bausch ◽  
B. M. Kramer
Keyword(s):  
Process Control ◽  
Control Problem ◽  
Frequency Domain ◽  
Control Strategy ◽  
Closed Loop ◽  
Robot Manipulators ◽  
Industrial Robot ◽  
Automated System ◽  
Working Together ◽  
Tangential Forces

The deburring process of manufactured parts has been investigated theoretically and experimentally as a frequency domain control problem with special regard to application by industrial robot manipulators. A new control strategy has been developed for precision deburring to guarantee burr removal while compensating for robot oscillations and small uncertainties in the location of the part relative to the robot. Compliant tool-holders, designed according to the above control strategy, provide the required normal and tangential forces for deburring. A servo positioning table used to holds parts, has been considered in this study to compensate for robot oscillations up to 80 percent. The robot, the compliant tool-holder, and the servo positioning table, working together with a closed-loop process control, form a new automated system that deburrs manufactured parts.

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