Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Spacecraft Simulator"”.
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Dynamic and Control of Air-Bearing Spacecraft Simulator
<p>An air bearing is being designed as a spacecraft rotational motion simulator, featuring the Sawyer Robot and its control box. The objective is to maneuver the robot as desired, performing operations specific to on-orbit servicing operations while maintaining stability of the system. Before the …
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Applied Mass Properties Identification Method to the Cal Poly's Spacecraft Simulator
<p>The Cal Poly Spacecraft Simulator is currently being developed for future testing and verifying theoretical control applications. This paper details the effort to balance the platform and remove undesired external torque from the system using System Identification technique developed by Patrick …
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Mixed Control Moment Gyro and Momentum Wheel Attitude Control Strategies
… attitude control strategy is implemented on the spacecraft simulator at Virginia Tech.
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Design and integration of a three degrees-of freedom robotic vehicle with control moment gyro for the Autonomous Multiagent Physically Interacting Spacecraft (AMPHIS) testbed
The use of fractionated spacecraft systems in on-orbit spacecraft assembly has the potential to provide benefits to both the defense and civil space community. To this end, much research must be conducted to develop and prove the requisite technologies to achieve these benefits. This thesis …
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Adaptive Control Applied to the Cal Poly Spacecraft Attitude Dynamics Simulator
The goal of this thesis is to use the Cal Poly Spacecraft Attitude Dynamics Simulator to provide proof of concept of two adaptive control theories developed by former Cal Poly students: Nonlinear Direct Model Reference Adaptive Control and Adaptive Output Feedback Control. The Spacecraft Attitude …
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Applied System Identification for a Four Wheel Reaction Wheel Platform
… there is a four-wheel reaction wheel pyramidal simulator platform supported by an air-bearing. This simulator has the current capability to measure the wheel speeds and angular velocity of the platform, and with these measurements, the system identification process was used to obtain the mass …
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Design and control of a space based two link manipulator with Lyapunov based control laws
The Flexible Spacecraft Simulator (FSS) at the Naval Postgraduate School was modified by replacing the flexible appendage with a two link robotic manipulator. This experimental setup was designed to simulate motion of a spacecraft about the pitch axis. The spacecraft consists of a main body, a two …
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An Assessment of 3D Tracking Systems and Lidar Data for RPO Simulation
… rendezvous missions, a low barrier to entry spacecraft simulator platform allows researchers to test and validate robotics systems, sensors, and algorithms for space applications, without investing in multimillion dollar equipment. This thesis conducted drone flights that followed a …
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Investigation of Nonlinear Control Strategies Using GPS Simulator And Spacecraft Attitude Control Simulator
In this dissertation, we discuss the Distributed Spacecraft Attitude Control System Simulator (DSACSS) testbed developed at Virginia Polytechnic Institute and State University for the purpose of investigating various control techniques for single and multiple spacecraft. DSACSS is comprised of two …
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Internal Torques and Forces in Gyrostats with Magnetically Suspended Rotors
… bearings have several potential applications in spacecraft design. Based on the gyrostat model, we develop equations that describe the internal torques and forces that occur between the body and one of the attached wheels. We evaluate the transverse torques for the torque--free gyrostat and a …
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The Distributed Spacecraft Attitude Control System Simulator: From Design Concept to Decentralized Control
A spacecraft formation possesses several benefits over a single-satellite mission. However, launching a fleet of satellites is a high-cost, high-risk venture. One way to mitigate much of this risk is to demonstrate hardware and algorithm performance in groundbased testbeds. It is typically …