Radial basis function neural network for hydrologic inversion: an appraisal with classical and spatio-temporal geostatistical techniques in the context of site characterization

2008 ◽  
Vol 23 (7) ◽  
pp. 933-945 ◽  
Author(s):  
Amvrossios C. Bagtzoglou ◽  
Faisal Hossain
Keyword(s):  
Neural Network ◽  
Radial Basis Function ◽  
Basis Function ◽  
Site Characterization ◽  
Radial Basis ◽  
Geostatistical Techniques ◽  
Spatio Temporal

scholarly journals Fault-Tolerant Active Disturbance Rejection Control of Plant Protection of Unmanned Aerial Vehicles Based on a Spatio-Temporal RBF Neural Network

2021 ◽  
Vol 11 (9) ◽  
pp. 4084
Author(s):  
Lianghao Hua ◽  
Jianfeng Zhang ◽  
Dejie Li ◽  
Xiaobo Xi
Keyword(s):  
Neural Network ◽  
Radial Basis Function ◽  
Flight Control ◽  
Basis Function ◽  
Disturbance Rejection ◽  
Control Method ◽  
Fault Tolerant ◽  
Active Disturbance Rejection ◽  
Radial Basis ◽  
Spatio Temporal

This paper presents a fault-tolerant flight control method for a multi-rotor UAV under actuator failure and external wind disturbances. The control method is based on an active disturbance rejection controller (ADRC) and spatio-temporal radial basis function neural networks, which can be used to achieve the stable control of the system when the parameters of the UAV mathematical model change. Firstly, an active disturbance rejection controller with an optimized parameter design is designed for rthe obust control of a multi-rotor vehicle. Secondly, a spatio-temporal radial basis function neural network with a new adaptive kernel is designed. In addition, the output of the novel radial basis function neural network is used to estimate fusion parameters containing actuator faults and model uncertainties and, consequently, to design an active fault-tolerant controller for a multi-rotor vehicle. Finally, fault injection experiments are carried out with the Qball-X4 quadrotor UAV as a specific research object, and the experimental results show the effectiveness of the proposed self-tolerant, fault-tolerant control method.

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