scholarly journals A Model-Free Approach for Online Optimization of Nonlinear Systems

2021 ◽  
pp. 1-1
Author(s):  
Ameer Hamza Khan ◽  
Shuai Li ◽  
Bin Xu ◽  
Xinwei Cao
Keyword(s):  
Nonlinear Systems ◽  
Online Optimization ◽  
Model Free ◽  
Model Free Approach

Analytical solution of the PELDOR inverse problem using the integral Mellin transform

2017 ◽  
Vol 19 (48) ◽  
pp. 32381-32388 ◽  
Author(s):  
Anna G. Matveeva ◽  
Vyacheslav M. Nekrasov ◽  
Alexander G. Maryasov
Keyword(s):  
Inverse Problem ◽  
Distribution Function ◽  
Analytical Solution ◽  
Short Distance ◽  
Mellin Transform ◽  
Distance Distribution ◽  
Distance Distribution Function ◽  
Distance Range ◽  
Model Free ◽  
Model Free Approach

The model-free approach used does not introduce systematic distortions in the computed distance distribution function between two spins and appears to result in noise grouping in the short distance range.

scholarly journals A MODEL-FREE APPROACH FOR ACCURATE JOINT MOTION CONTROL IN HUMANOID LOCOMOTION

2011 ◽  
Vol 08 (01) ◽  
pp. 27-46 ◽  
Author(s):  
JORGE VILLAGRA ◽  
CARLOS BALAGUER
Keyword(s):  
Nonlinear Effects ◽  
Control Approach ◽  
Transmission Delays ◽  
Online Identification ◽  
Model Free ◽  
Uncertain Dynamics ◽  
Parameter Variations ◽  
Network Transmission ◽  
Model Free Approach ◽  
The One

A new model-free approach to precisely control humanoid robot joints is presented in this article. An input–output online identification procedure will permit to compensate neglected or uncertain dynamics, such as, on the one hand, transmission and compliance nonlinear effects, and, on the other hand, network transmission delays. Robustness to parameter variations will be analyzed and compared to other advanced PID-based controllers. Simulations will show that not only good tracking quality can be obtained with this novel technique, but also that it provides a very robust behavior to the closed-loop system. Furthermore, a locomotion task will be tested in a complete humanoid simulator to highlight the suitability of this control approach for such complex systems.

Oscillator-based walking assistance: A model-free approach

2011 ◽  
Author(s):  
R. Ronsse ◽  
B. Koopman ◽  
N. Vitiello ◽  
T. Lenzi ◽  
S. M. M. De Rossi ◽  
...  
Keyword(s):  
Model Free ◽  
Model Free Approach
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