NONLINEAR ROLL CONTROL ALGORITHM FOR THE DERIVATION OF AN AIRCRAFT LEAVING ON A PRESCRIBED WAY LINE

2021 ◽  
Vol 2 (28) ◽  
pp. 3-8
Author(s):  
V. G. Bulasova ◽  
◽  
V. K. Ponomarev ◽  
Keyword(s):  
Key Words ◽  
Motion Control ◽  
Control Algorithm ◽  
Center Of Mass ◽  
Trajectory Control ◽  
Lateral Deviation ◽  
Roll Control ◽  
Track Line ◽  
Control Trajectory

The conclusion of the aircraft to a given track line is considered. The possibility of using for this purpose a nonlinear roll control algorithm with functions of functions is analyzed. The results of modeling of the guidance process are given, showing that the investigated nonlinear algorithm ensures the withdrawal of an aircraft from any points in space on a given path for any initial course in a calm atmosphere and in the presence of wind. Key words: line of a given path, roll control, trajectory control algorithm, motion control of the center of mass, lateral deviation.

scholarly journals Influence of Satellite Motion Control System Parameters on Performance of Space Debris Capturing

Aerospace ◽  
2020 ◽  
Vol 7 (11) ◽  
pp. 160
Author(s):  
Mahdi Akhloumadi ◽  
Danil Ivanov
Keyword(s):  
Control System ◽  
Motion Control ◽  
Control Algorithm ◽  
Space Debris ◽  
Equations Of Motion ◽  
Center Of Mass ◽  
Attitude Motion ◽  
System Parameters ◽  
Thrust Vector ◽  
Rendezvous And Docking

Relative motion control problem for capturing the tumbling space debris object is considered. Onboard thrusters and reaction wheels are used as actuators. The nonlinear coupled relative translational and rotational equations of motion are derived. The SDRE-based control algorithm is applied to the problem. It is taken into account that the thrust vector has misalignment with satellite center of mass, and reaction wheels saturation affects the ability of the satellite to perform the docking maneuver to space debris. The acceptable range of a set of control system parameters for successful rendezvous and docking is studied using numerical simulations taking into account thruster discreteness, actuators constrains, and attitude motion of the tumbling space debris.

Nonlinear model predictive control of spacecraft relative motion

2018 ◽  
Vol 233 (11) ◽  
pp. 3906-3919 ◽  
Author(s):  
Piotr A Felisiak ◽  
Krzysztof S Sibilski ◽  
Kaiyu Qin ◽  
Gun Li ◽  
Wiesław A Wróblewski
Keyword(s):  
Model Predictive Control ◽  
Motion Control ◽  
Predictive Control ◽  
Relative Motion ◽  
Control Algorithm ◽  
Optimization Problem ◽  
Control Method ◽  
Nonlinear Model Predictive Control ◽  
Model Predictive Control Algorithm ◽  
Control Trajectory

This investigation deals with the problem of spacecraft relative motion control, which is typically associated with the spacecraft rendezvous and proximity maneuvers. Relative position and linear velocity are considered. A distinguishing attribute of the presented approach is consideration of definitely larger relative distance between the satellites than it is commonly addressed in the literature. The presented control method is applicable in the case where the chief satellite moves in a known, highly elliptical orbit. A quasi-optimal control is found by a model predictive control algorithm, where the nonlinear optimization problem is reduced to quadratic optimization by preliminary estimation of the future control trajectory. Significance of the method has been verified using a computer simulation.

FUNCTIONAL COORDINATION OF METHODS OF ORGANIZATION OF ADAPTIVE DATA COLLECTION PROCESSES AND METHODS OF SPATIAL SELF-ORGANIZATION OF MOBILE AGENTS

2017 ◽  
Vol 2 (1) ◽  
pp. 27-32
Author(s):  
Botchkaryov. A. ◽  
Keyword(s):  
Data Collection ◽  
Key Words ◽  
Motion Control ◽  
Mobile Agent ◽  
Mobile Agents ◽  
Parallel Execution ◽  
Self Organization ◽  
Data Collection Process ◽  
Speed Up ◽  
Adaptive Data Collection

The way of functional coordination of methods of organization adaptive data collection processes and methods of spatial self-organization of mobile agents by parallel execution of the corresponding data collection processes and the process of motion control of a mobile agent using the proposed protocol of their interaction and the algorithm of parallel execution planning is proposed. The method allows to speed up the calculations in the decision block of the mobile agent by an average of 40.6%. Key words: functional coordination, adaptive data collection process, spatial self-organization, mobile agents

scholarly journals Autonomous Navigation of a Team of Unmanned Surface Vehicles for Intercepting Intruders on a Region Boundary

Sensors ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 297
Author(s):  
Ali Marzoughi ◽  
Andrey V. Savkin
Keyword(s):  
Motion Control ◽  
Autonomous Vehicles ◽  
Autonomous Navigation ◽  
Control Algorithm ◽  
Autonomous Vehicle ◽  
Sufficient Conditions ◽  
Real Life ◽  
Unmanned Surface Vehicles ◽  
Necessary And Sufficient ◽  
See Region

We study problems of intercepting single and multiple invasive intruders on a boundary of a planar region by employing a team of autonomous unmanned surface vehicles. First, the problem of intercepting a single intruder has been studied and then the proposed strategy has been applied to intercepting multiple intruders on the region boundary. Based on the proposed decentralised motion control algorithm and decision making strategy, each autonomous vehicle intercepts any intruder, which tends to leave the region by detecting the most vulnerable point of the boundary. An efficient and simple mathematical rules based control algorithm for navigating the autonomous vehicles on the boundary of the see region is developed. The proposed algorithm is computationally simple and easily implementable in real life intruder interception applications. In this paper, we obtain necessary and sufficient conditions for the existence of a real-time solution to the considered problem of intruder interception. The effectiveness of the proposed method is confirmed by computer simulations with both single and multiple intruders.

The Synchronization Control of the Hydraulic Press Brake Based on the Virtual Shaft Control Algorithm

2011 ◽  
Vol 383-390 ◽  
pp. 574-579 ◽  
Author(s):  
Guang Fei Liu ◽  
Su Ling Li ◽  
Lei Zhang
Keyword(s):  
Motion Control ◽  
Control Algorithm ◽  
Hydraulic Press ◽  
Synchronization Control ◽  
Existing Problems ◽  
Synchronous System ◽  
Working Principle

This paper simulated the virtual master shaft based on the analysis of the working principle and the existing problems of the hydraulic press brake as well as based on the application of the virtual shaft algorithm in motion control, which directly drive the synchronous system of the hydraulic press brake. We established the model of the virtual master axis and the model of the hydraulic press brake which based on the virtual shaft algorithm, and simulated the models in Mat lab. We obtain the better effect in the accuracy and combination property.

DEVELOPMENT OF TRAJECTORY CONTROL ALGORITHM FOR A TRAILER

2013 ◽  
Author(s):  
P. Junyusen ◽  
T. Takigawa ◽  
M. Koike ◽  
H. Hasegawa ◽  
B. Bahalayodhin
Keyword(s):  
Control Algorithm ◽  
Trajectory Control

scholarly journals Dynamic analysis and motion control of spinning tether system during its Earth to Mars flight

2021 ◽  
Vol 5 (1) ◽  
pp. 27-34
Author(s):  
H. Lu ◽  
C. Wang ◽  
Yu. M. Zabolotnov
Keyword(s):  
Dynamic Analysis ◽  
Motion Control ◽  
Center Of Mass ◽  
Angular Speed ◽  
Artificial Gravity ◽  
Jet Engines ◽  
Interplanetary Trajectory ◽  
Material Points ◽  
Spinning Tether ◽  
Interplanetary Mission

The dynamic analysis and motion control of a spinning tether system for an interplanetary mission to Mars is considered. The space system consists of two spacecraft connected by a tether with thrusts to control its movement. The movements of the tether system in the sphere of action of the Earth, on the interplanetary trajectory and in the sphere of action of Mars are consistently analyzed. In near-Earth orbit, the transfer of the system into rotation with the help of jet engines installed on the end spacecrafts is considered. The spin of the system is used to create artificial gravity during the interplanetary flight. The tether system spins in the plane perpendicular to the plane of the orbital motion of the center of mass of the system. To describe spatial motion of the system, a mathematical model is used, in which the tether is represented as a set of material points with viscoelastic unilateral mechanical connections. When calculating the movement of the system, an approach based on the method of spheres of action is used. Spacecrafts are considered as material points. The level of gravity and spin of tether system is controlled by thrusters. The structure of the controller for controlling the angular speed of rotation of the tether system is proposed. The simulation results are presented to confirm the effectiveness of the proposed control algorithm, which provides a given level of artificial gravity for th e interplanetary mission under consideration.

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