Closed Loop Optimal Guidance Control For Aircraft In Ascent Phase *

2020 ◽  
Author(s):  
Qingyuan Liu ◽  
Juanjuan Xu ◽  
Huanshui Zhang
Keyword(s):  
Closed Loop ◽  
Guidance Control ◽  
Optimal Guidance ◽  
Ascent Phase

Load relief control of launch vehicle using aerodynamic angle estimation

2017 ◽  
Vol 232 (8) ◽  
pp. 1598-1605
Author(s):  
Gyeongtaek Oh ◽  
Jongho Park ◽  
Jeongha Park ◽  
Hongju Lee ◽  
Youdan Kim ◽  
...  
Keyword(s):  
Closed Loop ◽  
Sliding Mode ◽  
Dynamic Pressure ◽  
Launch Vehicle ◽  
Aerodynamic Load ◽  
Load Relief ◽  
Control Scheme ◽  
Potential Benefits ◽  
Aerodynamic Angle ◽  
Ascent Phase

A nonlinear closed-loop load relief scheme is proposed to reduce the aerodynamic load during the ascent phase of a launch vehicle. The proposed controller is designed based on a back-stepping and sliding-mode control scheme with aerodynamic angle feedback. A hybrid load-relief strategy using the load relief scheme around the period of the maximum dynamic pressure and the traditional minimum-drift scheme during the other period is proposed. An aerodynamic angle estimator is also developed using a Kalman filter for the feedback of the load relief control. Numerical simulation is conducted to demonstrate the performance of the proposed strategy as well as the potential benefits.

Nonlinear Optimal Guidance Control for Lunar Traje...

2005 ◽  
Author(s):  
Wang Dayi ◽  
Qiao Guodong ◽  
Li Tieshou
Keyword(s):  
Guidance Control ◽  
Optimal Guidance

Time-optimal guidance control for an agricultural robot with orientation constraints

2013 ◽  
Vol 99 ◽  
pp. 124-131 ◽  
Author(s):  
Fuhong Dong ◽  
Olaf Petzold ◽  
Wolfgang Heinemann ◽  
Roland Kasper
Keyword(s):  
Guidance Control ◽  
Optimal Guidance ◽  
Time Optimal ◽  
Agricultural Robot

The Railway Wheelset and Suspension Unit as a Closed-Loop Guidance Control System: A Method for Performance Improvement

1968 ◽  
Vol 10 (2) ◽  
pp. 91-100 ◽  
Author(s):  
C. K. Benington
Keyword(s):  
Control System ◽  
Closed Loop ◽  
Lateral Position ◽  
Stable Region ◽  
Output Analysis ◽  
Guidance Control ◽  
Performance Requirements ◽  
System A ◽  
High Speeds ◽  
Wide Range

Using a simplified mathematical model, the conventional railway wheelset and suspension unit is shown to behave as a closed-loop guidance control system. The centre-line of the track corresponds to the input, and the lateral position of the centroid of the wheelset to the output. Analysis of the system shows that, while it may be made stable at up to high speeds, the performance in the stable region is unsatisfactory in certain respects. This is attributed to the large forces of interaction between the wheels and rails at the points of contact, arising, in the case of the conventional wheelset, from creepage. These forces may be reduced and controlled by interposing a coupling having viscous characteristics between the wheels, in place of the rigid axle. The new arrangement is shown to be much more flexible, and capable of fulfilling a wide range of performance requirements.

Minimum-time open-loop and closed-loop optimal guidance with GA-PSO and neural fuzzy for Samarai MAV flight

2015 ◽  
Vol 30 (5) ◽  
pp. 28-37 ◽  
Author(s):  
Mohammad Samani ◽  
Mona Tafreshi ◽  
Iman Shafieenejad ◽  
Amir Ali Nikkhah
Keyword(s):  
Closed Loop ◽  
Open Loop ◽  
Minimum Time ◽  
Optimal Guidance ◽  
Neural Fuzzy
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