scholarly journals Integrated Optimization of Guidance and Control Parameters in a Dual Spin Flying Vehicle

2017 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Hadi Nobahari ◽  
Mojtaba Arab Kermani
Keyword(s):  
Control Parameters ◽  
Integrated Optimization ◽  
Guidance And Control ◽  
And Control

scholarly journals Time-Fixed Glideslope Guidance for Approaching the Proximity of an Asteroid

Aerospace ◽  
2021 ◽  
Vol 8 (5) ◽  
pp. 137
Author(s):  
Jinlin Wang ◽  
Hai Li ◽  
Zhangjin Lin ◽  
Hong Huo
Keyword(s):  
Control Algorithm ◽  
Control Parameter ◽  
Orbital Dynamics ◽  
Control Parameters ◽  
Guidance And Control ◽  
Guidance Algorithm ◽  
Relative Measurements ◽  
And Control ◽  
Range Of Values ◽  
Vast Range

The guidance and control problem of spacecraft approaching an asteroid using constant continuous thrust is studied in this work. The range of interest is from hundreds of kilometers to several kilometers, in which relative measurements of much higher accuracy than based on Earth can be used to facilitate further hovering or landing operations. Time-fixed glideslope guidance algorithm is improved by introducing a substitute of an existing control parameter and combined with elliptical relative orbital dynamics to rendezvous the spacecraft with a prescribed location in the proximity of a given asteroid. A vast range of values for the control parameters are explored and suitable combinations are found. To fully validate the robustness and accuracy of the proposed control algorithm, Monte Carlo simulations are done with the navigational error and implementation error considered.

scholarly journals Integrated optimization of structure and control parameters for the height control system of a vertical spindle cotton picker

2020 ◽  
Author(s):  
Xingzheng Chen ◽  
Congbo Li ◽  
Rui Hu ◽  
Ning Liu ◽  
Chi Zhang
Keyword(s):  
Control System ◽  
Response Time ◽  
Cotton Field ◽  
Optimization Approach ◽  
Control Parameters ◽  
Height Control ◽  
Integrated Optimization ◽  
Displacement Error ◽  
Cotton Picker ◽  
And Control

Abstract Vertical picking method is a predominate method used to harvest cotton crop. However, a vertical picking method may cause spindle bending of the cotton picker if spindles collide with stones on the cotton field. Thus, how to realize a precise height control of the cotton picker is a crucial issue to be solved. The objective of this study is to design a height control system to avoid the collision. To design it, the mathematical models are established first. Then a multi-objective optimization model represented by structure parameters and control parameters is proposed to take the pressure of chamber without piston, response time and displacement error of the height control system as the optimization objectives. An integrated optimization approach that combines optimization via simulation, particle swarm optimization and simulated annealing is proposed to solve the model. Simulation and experimental test results show that the proposed integrated optimization approach can not only reduce the pressure of chamber without piston, but also decrease the response time and displacement error of the height control system.

scholarly journals Integrated Optimization of Structure and Control Parameters for the Height Control System of a Vertical Spindle Cotton Picker

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Xingzheng Chen ◽  
Congbo Li ◽  
Rui Hu ◽  
Ning Liu ◽  
Chi Zhang
Keyword(s):  
Control System ◽  
Response Time ◽  
Cotton Field ◽  
Optimization Approach ◽  
Control Parameters ◽  
Height Control ◽  
Integrated Optimization ◽  
Displacement Error ◽  
Cotton Picker ◽  
And Control

AbstractVertical picking method is a predominate method used to harvest cotton crop. However, a vertical picking method may cause spindle bending of the cotton picker if spindles collide with stones on the cotton field. Thus, how to realize a precise height control of the cotton picker is a crucial issue to be solved. The objective of this study is to design a height control system to avoid the collision. To design it, the mathematical models are established first. Then a multi-objective optimization model represented by structure parameters and control parameters is proposed to take the pressure of chamber without piston, response time and displacement error of the height control system as the optimization objectives. An integrated optimization approach that combines optimization via simulation, particle swarm optimization and simulated annealing is proposed to solve the model. Simulation and experimental test results show that the proposed integrated optimization approach can not only reduce the pressure of chamber without piston, but also decrease the response time and displacement error of the height control system.

Probability model for control parameters in the aircraft's information and control systems

2018 ◽  
Vol 2 ◽  
pp. 9-16
Author(s):  
A. Al-Ammouri ◽  
◽  
H.A. Al-Ammori ◽  
A.E. Klochan ◽  
A.M. Al-Akhmad ◽  
...  
Keyword(s):  
Control Systems ◽  
Probability Model ◽  
Control Parameters ◽  
And Control

Benefits of Advanced Surface Movement Guidance and Control Systems (A-SMGCS)

2005 ◽  
Vol 13 (4) ◽  
pp. 329-356 ◽  
Author(s):  
Christoph Meier ◽  
Jörn Jakobi ◽  
Paul Adamson ◽  
Sandra Lozito ◽  
Lynne Martin
Keyword(s):  
Control Systems ◽  
Surface Movement ◽  
Guidance And Control ◽  
And Control
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