Fault-Tolerant Attitude Control System for a Spacecraft with Control Moment Gyros Using Multi-Objective Optimization
Journal Title: International Journal of Advanced Computer Science & Applications - Year 2015, Vol 6, Issue 1
Abstract
Recent years have seen a growing requirement for accurate and agile attitude control of spacecraft. To both quickly and accurately control the attitude of a spacecraft, Control Moment Gyros (CMGs) which can generate much higher torque than conventional spacecraft actuators are used as actuators of the spacecraft. The drive on the motors is needed for rapid maneuverability, negatively affecting their life. Thus, in designing spacecraft the conflicting requirements are rapid maneuverability and reduced the drive on motors. Furthermore, the attitude control system needs to be fault-tolerant. The dominant requirement is different for each spacecraft mission, and therefore the relationship between the requirements should be shown. In this study, a design method is proposed for the attitude control system, using multi objective optimization of the skew angle and parameters of the control system. Pareto solutions that can show the relationship between the requirements are obtained by optimizing the parameters. Through numerical analysis, the effect with fault-tolerance and parameter differences for the dominant requirement are confirmed and the method to guide for determining parameters of the attitude control system is established.
Authors and Affiliations
Ai Noumi, Misuzu Haruki, Takuya Kanzawa, Masaki Takahashi
Wavelet Time-frequency Analysis of Electro-encephalogram (EEG) Processing
This paper proposes time-frequency analysis of EEG spectrum and wavelet analysis in EEG de-noising. In this paper, the basic idea is to use the characteristics of multi-scale multi-resolution, using four different...
Survey of Error Correction Mechanisms for Video Streaming over the Internet
This overview is targeted at determining state-of-the-art on Error control mechanisms for video streaming over the Internet. The aims of error control mechanisms are to provide and protect the data from errors caused by...
A Comparison Review based on Classifiers and Regression Models for the Investigation of Flash Floods
Several regions of the world have been affected by one of the natural disasters named as flash floods. Many villagers who live near stream or dam, they suffer a lot in terms of property, cattle and human lives loss. Conv...
Undergraduate’s Perception on Massive Open Online Course (MOOC) Learning to Foster Employability Skills and Enhance Learning Experience
The Massive Open Online Course (MOOC) is a very recent development in higher education institutions in Malaysia. As in September 2015, Universiti Teknikal Malaysia Melaka (UTeM) has introduced Mandarin course under Malay...
Hospital Readmission Prediction using Machine Learning Techniques
One of the most critical problems in healthcare is predicting the likelihood of hospital readmission in case of chronic diseases such as diabetes to be able to allocate necessary resources such as beds, rooms, specialist...