Akbulut, Burak
Arberkli, Ferhat
Azgın, Kıvanç
Tekinalp, Ozan
A novel satellite attitude actuator based on vibrating masses was previously proposed. Its governing equations were obtained and simulated. In this study, the resulting mathematical model is validated via energy as well as the conservation of angular momentum methods. Additionally, the mathematical model for the complete system was too complicated for analysis. In this work, a representative simplified set of equations describing vibrating mass control moment gyroscope (vCMG) dynamics in high fidelity are also obtained . It is shown that the simplified model may be used to simulate the complex vCMG dynamics under certain conditions.
27th AAS/AIAA Space Flight Mechanics Meeting


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This paper presents initial results toward the implementation of a wireless sensor network (WSN) demonstration testbed powered up by vibration energy, as part of the E-CROPS project. The testbed uses MicaZ Motes, supplied by AA batteries. The power drawn by Motes in different modes of operation are measured. Design details of an electromagnetic harvester, and experimental results of charging AA batteries with this harvester at 10 Hz vibration generated in the laboratory, are presented.
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The aim of this thesis is to design a control moment gyroscope (CMG) with outer rotor BLDC motor for medium size satellites. CMG is a device that provides high output torque to the satellite in order to maneuvering satellites rapidly. CMG is the most efficient actuator in terms of output torque capacity when it is compared with other type actuators such as the reaction wheel. The first step of the designing CMG is to determine CMG design specifications. The mass and volume specifications of the designed CMG...
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A two-stage detector is proposed to accommodate high computational load requirements of modern radar systems. The first stage of the proposed system is a low-complexity detector that operates at an unusually high false alarm probability value around 1/10. This stage is to prescreen and eliminate some of the test cells with relatively few operations. The second stage operates only on the cells passing the prescreening stage and implements a high-complexity detector at a desired system false alarm rate. Due t...
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AXA’s Arase Spacecraft, which is formerly known as Exploration of Energization and Radiation in Geospace (ERG), was launched on 20 December 2016. The spacecraft is spin-stabilized. Its mission is exploring how relativistic electrons in the radiation belts are generated during space storms. Two on-ground attitude determination algorithms are considered for the mission: a conventional simple algorithm that inherits from old missions and an advanced algorithm that is newly designed. This paper discusses the de...
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A new nonlinear control algorithm is proposed for multi-copter type vertical takeoff vehicles. The algorithm uses linear controllers for the position control in the outer loop. The inner loop attitude control is carried out using quaternion representation. The necessary thrust vector requirements of the position control are converted to inner loop as attitude control commands. The inner loop uses a Lyapunov function based attitude controller utilizing the to-go quaternion calculated from thrust vector comma...
Citation Formats
B. Akbulut, F. Arberkli, K. Azgın, and O. Tekinalp, “A SIMPLIFIED MODEL FOR VIBRATING MASS CONTROL MOMENT GYROSCOPE,” San Antonio, TX, 2017, vol. 160, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55729.