Attitude Control of Spacecraft by Two Variable-Speed Control Moment Gyros
نویسندگان
چکیده
منابع مشابه
Attitude Dynamics/Control of Dual-Body Spacecraft with Variable-Speed Control Moment Gyros
The dynamics equations of a spacecraft consisting of two bodies mutually rotating around a common gimbal axis are derived by the use of the Newton–Euler approach. One of the bodies contains a cluster of single-gimbal variable-speed control moment gyros. The equations include all of the inertia terms and are written in a general form, valid for any cluster configurations and any number of actuat...
متن کاملSpacecraft Adaptive Attitude and Power Tracking with Variable Speed Control Moment Gyroscopes
Control laws for an integrated power/attitude control system (IPACS) for a satellite using variable-speed singlegimbal control moment gyroscopes (VSCMGs) are introduced. Whereas the wheel spin rates of the conventional CMGs are constant, the VSCMGs are allowed to have variable speeds. Therefore, VSCMGs have extra degrees of freedom and can be used to achieve additional objectives, such as energ...
متن کاملSpacecraft Attitude Control Using Control Moment Gyro Reconfiguration
The orientation of a satellite in space described relative to some other object or system is known as the attitude of the satellite. The attitude may be changing with time. To be able to control the attitude of the satellite, it must be equipped with actuators that can produce the required torque. Control Moment Gyroscope is a space craft control actuator which acts as torque amplifier. It is s...
متن کاملSingularity Analysis and Avoidance of Variable-Speed Control Moment Gyros – Part II : Power Constraint Case
A Variable Speed Control Moment Gyro (VSCMG) is a relatively recent torque actuator device for spacecraft attitude control. As implied by its name, a VSCMG is a singlegimbal control moment gyro (CMG) with a flywheel having variable speed. Owing to this extra degree of freedom, a VSCMG can be used to achieve additional objectives, such as power tracking and/or singularity avoidance, as well as a...
متن کاملSingularity Analysis and Avoidance of Variable-Speed Control Moment Gyros – Part I : No Power Constraint Case
Single-gimbal control moment gyros (CMGs) have several advantages over other actuators for attitude control of spacecraft. For instance, they act as torque amplifiers and, thus, are suitable for slew maneuvers. However, their use as torque actuators is hindered by the presence of singularities, which, when encountered, do not allow a CMG cluster to generate torques about arbitrary directions. A...
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ژورنال
عنوان ژورنال: Journal of Institute of Control, Robotics and Systems
سال: 2015
ISSN: 1976-5622
DOI: 10.5302/j.icros.2015.15.0166