Robust broadband periodic excitation design

2000 ◽  
Vol 49 (2) ◽  
pp. 270-274 ◽  
Author(s):  
G. Simon ◽  
J. Schoukens
Keyword(s):  
Periodic Excitation

OPTIMAL LINEAR CONTROL APPLIED IN A ENERGY HARVESTING DYNAMIC SYSTEM WITH PERIODIC EXCITATION

2019 ◽  
Author(s):  
Estevão Fuzaro de Almeida ◽  
Fabio Roberto Chavarette ◽  
Douglas da Costa Ferreira
Keyword(s):  
Energy Harvesting ◽  
Dynamic System ◽  
Linear Control ◽  
Periodic Excitation ◽  
Optimal Linear

Dynamic Stall Control by Intermittent Periodic Excitation

2001 ◽  
Vol 38 (1) ◽  
pp. 188-190 ◽  
Author(s):  
D. Greenblatt ◽  
D. Neuburger ◽  
I. Wygnanski
Keyword(s):  
Dynamic Stall ◽  
Periodic Excitation ◽  
Stall Control

Analysis Of Time-Dependent Heat Transfer With Periodic Excitation In Microscale Systems

2021 ◽  
pp. 117225
Author(s):  
Tomer Shockner ◽  
Tanvir Ahmed Chowdhury ◽  
Shawn A. Putnam ◽  
Gennady Ziskind
Keyword(s):  
Heat Transfer ◽  
Time Dependent ◽  
Periodic Excitation

Experimental Investigation of a Turbulent Jet Produced by an Oscillating Surface Actuator

1994 ◽  
Vol 47 (6S) ◽  
pp. S127-S131 ◽  
Author(s):  
R. D. James ◽  
J. W. Jacobs ◽  
A. Glezer
Keyword(s):  
Small Time ◽  
Turbulent Jet ◽  
Linear Functions ◽  
Periodic Excitation ◽  
Mean Flow ◽  
Piezoceramic Actuator ◽  
Mass Injection ◽  
The Mean ◽  
Time Periodic ◽  
Turbulent Water

A round turbulent water jet produced normal to, and at the center of a resonantly driven piezoceramic actuator is investigated experimentally. The flow is produced without mass injection and is comprised entirely of radially entrained fluid. The jet is created by the formation and disappearance of cavitation bubbles during each oscillation cycle near the actuator surface. It appears that this process produces a series of vortex puffs from radially entrained fluid which coalesce to form the jet. Although the jet results from strong time periodic excitation, its time averaged behavior in the far field is similar to that of a classical turbulent round jet in that the increase its width and decrease in the inverse of its centerline velocity are both linear functions of the distance from the actuator. The time periodic features of the jet are observed throughout the flow field and are superimposed on the mean flow. The transient characteristics of the jet have also been investigated and indicate that it can be manipulated on relatively small time scales suggesting that it may be utilized for control of wall bounded shear flows.

Experimental Robot Identification: Advantages of Combining Internal and External Measurements and of Using Periodic Excitation

2001 ◽  
Vol 123 (4) ◽  
pp. 630-636 ◽  
Author(s):  
Walter Verdonck ◽  
Jan Swevers ◽  
Jean-Claude Samin
Keyword(s):  
Signal Processing ◽  
Parameter Estimation ◽  
Effective Means ◽  
Base Plate ◽  
Experimental Results ◽  
Parameter Estimates ◽  
Periodic Excitation ◽  
Identification Method ◽  
Reaction Forces ◽  
Improved Model

This paper discusses the advantages of using periodic excitation and of combining internal and external measurements in experimental robot identification. This discussion is based on the robot identification method developed by Swevers et al., a method that is recognized by industry as an effective means of robot identification that is frequently used, Hirzinger, G., Fischer, M., Brunner, B., Koeppe, R., Otter, M., Grebenstein, M., and Schafer, I, 1999, “Advances is Robotics: The DLR Experiment,” The International Journal of Robotics Research, Vol. 18, No. 11, pp. 1064–1087 [3]. Experimental results on a KUKA IR 361 show that the periodicity of the robot excitation is a key element of this method. Nonperiodic robot excitation complicates the signal processing preceding the parameter estimation, often yielding less accurate parameter estimates. An extension of this identification method combines internal and external measurements, Chenut, X., Samin, J. C., Swevers, J., and Ganseman, C., 2000, “Combining Internal and External robot Models for improved Model Parameter Estimation,” Mechanical Systems and Signal Processing. Vol. 14, No. 5, pp. 691–704 [4], yielding robot models that allow to accurately predict the actuator torques and the reaction forces/torques of the robot on its base plate, which are both important for the path planning. This paper presents and critically discusses the first experimental results obtained with this method.

Sign in / Sign up

Export Citation Format

Share Document