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Satellite Attitude Control System

An efficient method to control the amplitude of the limit cycle in satellite attitude control system

An efficient method to control the amplitude of the limit cycle in satellite attitude control system

... Attitude control systems, which have ON-OFF actuators, generally converge to a stable limit cycle in their steady ...the system – unlike to the case of using proportional actuators- has a minimum ...

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Design and Analysis of Gimbal Thruster Configurations for 3 Axis Satellite Attitude Control

Design and Analysis of Gimbal Thruster Configurations for 3 Axis Satellite Attitude Control

... 9: Satellite attitude control system block ...diagram. Control of the attitude of the satellite is accomplished by sending an attitude command signal from ground ...

10

Attitude Control of a Rigid Satellite Using Intelligent Change of Angular Momentum and Comparison with Classic Results Regarding to LQR

Attitude Control of a Rigid Satellite Using Intelligent Change of Angular Momentum and Comparison with Classic Results Regarding to LQR

... the satellite attitude or its body coordinates according to a reference ...proper control torques and mechanism reaction wheels. This system is a multivariable and nonlinear system and ...

6

Three-axis optimal control of satellite attitude based on Ponteryagin maximum ‎principle‎

Three-axis optimal control of satellite attitude based on Ponteryagin maximum ‎principle‎

... artificial satellite in 1957, controling attitude of satellites has been considered by the designers and engineers of aerospace ...of control in response to this need have been presented and analyzed ...

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Fractional order controller for satellite attitude stabilization based on magnetorquer.

Fractional order controller for satellite attitude stabilization based on magnetorquer.

... the attitude stability of a satellite is of considerable importance for successful completion of a space ...an attitude control system of a satellite pointing earth is to ...

6

Numerical 
		investigation of MHD flow in combined attitude and thermal control 
		system

Numerical investigation of MHD flow in combined attitude and thermal control system

... of attitude control and thermal ...the satellite operations [7, ...the system is implemented, the suitability of such a MHD driven mechanism had to be qualitatively analysed especially in ...

5

Hardware-in-Loop-Simulator for InnoSAT Attitude Control System

Hardware-in-Loop-Simulator for InnoSAT Attitude Control System

... The satellite attitude control simulator (ACS) is a test bench used to evaluate the performance and robustness of the attitude control ...the satellite development to support ...

5

Attitude Control of Chaotic Satellite with Unknown Input and uncertainties based on Sliding Control

Attitude Control of Chaotic Satellite with Unknown Input and uncertainties based on Sliding Control

... the system (9) and ...Fig.5 attitude control of the satellite with unknown inputs and uncertainties, sliding mode control has been ...the control signal proposed and error ...

5

Experimental and analysis of Attitude Control System for Low Earth Orbit (LEO) Satellite using Magnetic Torquers and error estimation with unscented Kalman Filter

Experimental and analysis of Attitude Control System for Low Earth Orbit (LEO) Satellite using Magnetic Torquers and error estimation with unscented Kalman Filter

... to control the attitude of low earth orbiting satellite less than 1000KM ...the control torque around the satellite body was ...torque. Attitude of the satellite for low ...

8

Micro-Satellite Configuration of Discoid and Asymmetrical, Gyroless with Thrusters Three-Axis Robust Control and Stability Analysis

Micro-Satellite Configuration of Discoid and Asymmetrical, Gyroless with Thrusters Three-Axis Robust Control and Stability Analysis

... implements attitude computation by observing the geomagnetic field intensity ...the attitude determination means commonly used by low orbit ...coordinate system, and can detect the size and ...

17

Satellite Attitude Maneuver using Sliding Mode Control under Body Angular Velocity Constraints

Satellite Attitude Maneuver using Sliding Mode Control under Body Angular Velocity Constraints

... the satellite, the feedback gain vector k can be specified for lower reaching time to the switching surface, and more robust is the ...a control action with growing magnitude of when the tracking error ...

6

Attitude Estimation of Nano-satellite according to Navigation Sensors using of Combination Method (TECHNICAL NOTE)

Attitude Estimation of Nano-satellite according to Navigation Sensors using of Combination Method (TECHNICAL NOTE)

... outstanding satellite technology in astronautics field because of its light weight, short development cycle, low development cost, high functional density and flexible emission ...characteristics. Satellite ...

6

Attitude Control of a Flexible Satellite by Using Robust Control Design Methods

Attitude Control of a Flexible Satellite by Using Robust Control Design Methods

... flexible satellite will be done in a way that a nominal model P s 0 ( ) will be selected and flexi- bility effects will be considered as uncertainty around the nominal ...of satellite have 30 percentage of ...

14

Genetic Algorithms for Satellite Launcher Attitude Controller Design

Genetic Algorithms for Satellite Launcher Attitude Controller Design

... the system is in the form ˙ x = Ax + Bu, the linear quadratic method can be used to find control gains in Equation ...the control problem will be encapsulated in Genetic Algorithms and how the GA ...

12

Malaysian satellite system

Malaysian satellite system

... The satellite uses gallium arsenide solar cells instead of silicon. It also features a specially contoured surface that eliminates the need for multiple feed horns. Also its has bipropellant propulsion ...

14

Sensored Field Oriented Control of BLDC Motor for Pico Satellite Attitude Control

Sensored Field Oriented Control of BLDC Motor for Pico Satellite Attitude Control

... As it has been discussed the stator currents have been projected into an orthogonal two axes system (α,β). Further analysis requires the projection from (α,β) to (d,q), rotating with current space vector, time ...

5

Title: Attitude Control of Robotic System According to Fuzzy Logic

Title: Attitude Control of Robotic System According to Fuzzy Logic

... predefined system, which acts in the real world environment as programmed wise or depends on ...The attitude of a robot varies depending on the basis sensing system and decision making process that’s ...

7

Proposal of Functional Thermal Control Systems for High Power Micro Satellite and Its Demonstration under Thermal Vacuum Condition

Proposal of Functional Thermal Control Systems for High Power Micro Satellite and Its Demonstration under Thermal Vacuum Condition

... HSP is the heat storage material which consists of a pitch type CFRP (Carbon Fiber Reinforced Polymer) and PCM (Phase-Change Material) [5]. The aim of HSP is smoothing of temperature from the devices by increasing the ...

17

Nonlinear observers for attitude estimation in gyroless spacecraft via Extended Kalman filter algorithm

Nonlinear observers for attitude estimation in gyroless spacecraft via Extended Kalman filter algorithm

... RazakSAT satellite. RazakSAT is a Malaysian satellite which was launched into Low Earth Orbit near Equatorial in ...the attitude was provided directly using sun sensor, one of the attitude ...

9

Technical of Satellite Communication On The Move (SOTM)

Technical of Satellite Communication On The Move (SOTM)

... Antenna system includes an antenna system and feeder ...antenna system is to realize the exchange of information between earth stations and satellites for transmitting or receiving radio ...feeder ...

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