Integrated Robust Dynamic Inversion Design of Missile Guidance and Control Based on Nonlinear Disturbance Observer

2012 ◽  
Author(s):  
Yanjun Shu ◽  
Shuo Tang
Keyword(s):  
Disturbance Observer ◽  
Dynamic Inversion ◽  
Missile Guidance ◽  
Nonlinear Disturbance Observer ◽  
Guidance And Control ◽  
Nonlinear Disturbance ◽  
And Control

Integrated strapdown missile guidance and control based on neural network disturbance observer

2019 ◽  
Vol 84 ◽  
pp. 170-181 ◽  
Author(s):  
Bin Zhao ◽  
Siyong Xu ◽  
Jianguo Guo ◽  
Ruimin Jiang ◽  
Jun Zhou
Keyword(s):  
Neural Network ◽  
Disturbance Observer ◽  
Missile Guidance ◽  
Guidance And Control ◽  
And Control

scholarly journals Aerodynamic analysis and control for a novel coaxial ducted fan aerial robot in ground effect

2020 ◽  
Vol 17 (4) ◽  
pp. 172988142095302
Author(s):  
Tianfu Ai ◽  
Bin Xu ◽  
Changle Xiang ◽  
Wei Fan ◽  
Yibo Zhang
Keyword(s):  
Disturbance Observer ◽  
Ground Effect ◽  
System Stability ◽  
Bench Test ◽  
Nonlinear Disturbance Observer ◽  
Modeling And Control ◽  
Ducted Fan ◽  
Aerial Robot ◽  
Nonlinear Disturbance ◽  
And Control

Modeling and control for a novel coaxial ducted fan aerial robot in-ground-effect is presented in this article. Based on experiments using the ducted fan bench test, the fitting curve of the ground effect thrust of the ducted fan aerial robot at different heights is obtained. In addition, the flow field simulation results of the prototype with ground effect at different heights can be obtained using computational fluid dynamics software. A simplified model of the prototype for control can be designed based on several reasonable hypotheses that are established using blade element and momentum theory. To compensate for the disturbance associated with ground effect, a nonlinear disturbance observer is designed to estimate the disturbance, and control structure of the closed-loop system is composed of a nonlinear disturbance observer combined with a double-loop proportion–integration–differentiation controller. The results of several numerical simulations and experiments demonstrate the effectiveness of this controller structure. The performances of tracking trajectory and system stability are improved significantly, compared to the situation that the ground effect is not compensated for.

Adaptive nonlinear disturbance observer-based control for stochastic systems with multiple heterogeneous disturbances

2020 ◽  
Vol 42 (11) ◽  
pp. 2020-2030
Author(s):  
Xinqing Li ◽  
Xinjiang Wei ◽  
Huifeng Zhang ◽  
Jian Han ◽  
Xin Hu ◽  
...  
Keyword(s):  
Disturbance Observer ◽  
Composite System ◽  
Stochastic Systems ◽  
Nonlinear Function ◽  
Control Input ◽  
System State ◽  
Nonlinear Disturbance Observer ◽  
Nonlinear Disturbance ◽  
Nonlinear Signal ◽  
And Control

The problem of anti-disturbance control is studied for a class of stochastic systems with multiple heterogeneous disturbances, which include three kinds of disturbance. One is the non-harmonic disturbance coupled with system state and control input. The other one is an unexpected nonlinear signal described as a nonlinear function. The third one is white noise. An adaptive nonlinear disturbance observer (ANDO) is constructed to estimate non-harmonic disturbance. Based on which, a new adaptive nonlinear disturbance observer-based control (ANDOBC) strategy is developed such that the composite system is asymptotically bounded in mean square. Simulation results are given to show its effectiveness of the proposed method.

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