Multi-objective optimal sensor deployment for satellite antenna reflector

作者：Li Wen Bo^*; Wang You Yi; Zhao Zhi Gang; Zhao Yang

来源：Journal of Vibration and Shock, 2012, 31(9): 123-127+148.

• Continuous variables
• Convergence speed
• Design requirements
• Genetic operators
• High precision
• Improved NSGA-II
• Key technologies
• Modal parameters
• Multi objective
• Multi-objective optimization problem
• NSGA-II
• NSGA-II algorithm
• On-orbit
• Optimal sensor
• Orthogonality
• Pareto solution
• Real engineering
• Sensor deployment
• Vibration energies
• Weight combination

To determine the number and locations of deployed sensors is the key technology to be solved for obtaining high precision modal parameters of large satellite antenna reflector on-orbit. To avoid the limitations and one-sidedness of single-objective criterion used in previous research work, the double-objective criterions were designed, which contain the largest orthogonality and the highest vibration energy of observed signals. NSGA-II algorithm was introduced in solving multi-objective optimization problem of sensor deployment. Considering the limitation that only continuous variables can be applicable and the deficiencies in convergence speed and diversity holding of NSGA-II, the coding and genetic operators were improved. Comparing the results of four cases with different single-objective and multi-objective criterions, the solutions based on improved NSGA-II are the best among these four cases according to all indicators, which are of greater flexibility and adaptability and can obtain the uniform distributed Pareto solution set, including all weight combinations of multi objectives. It can more significantly meet the design requirements in real engineering.

• 出版日期2012