Research Of Satellite Attitude Control Intelligent Algorithm

Satellites in scientific research, national defense and national production and other areas play an important role. With the development of space technology, powerful, technically complex large satellites although to some extent to meet the application requirements, but there are also large investment, high risks and long development cycle and other issues. Microelectronics, micro-mechanical as well as the rapid development of new materials such as high-tech as satellite technology to provide a broader space for development. Since the mid-1980s, small satellite development boom in the world is rising rapidly, due to its light weight, small size, low cost and short development cycle, a series of advantages, in communications, remote sensing, military, planetary exploration, engineering and technology experimental and other areas play an important role, with potential strategic value and market prospects, while small satellite development facility without large systems support, can be dispersed in universities, research laboratories, lab, which helps reduce overall development costs. Microsatellite attention not only by the space powers, but also by many medium-developed and emerging developing countries as an entry point for the development of space technology.The realization of small satellite missions are equipped with one hand depends on the performance of the instrument, on the other hand depends on the accuracy of satellite attitude control, so the high-precision, high-performance attitude control system (ACS) is a prerequisite for its efficient work. From the international development trend, ACS as a core part of small satellites, and its development funding accounts for about40%of the total cost, small satellite development is the most critical technologies. Small satellites because of the quality, power and volume and other restrictions, ACS ways to realize its high performance, it is necessary to take advantage of new technologies, the development of lightweight, high-performance attitude measurement sensitive devices and execution units, and second, from the perspective of system design start, the overall optimization, a multi-purpose fully tap the potential of each device to increase functional density micro-satellite, especially the latter, study of new information fusion algorithm attitude determination and control methods, compensated by software to reduce hardware requirements is effective and more practical measures.Satellite attitude control system is the important part of the satellite system, the accuracy of attitude control system depends not only on the performance of the hardware of the measurement, but also on the attitude control algorithm. In this dissertation, the attitude control algorithms are deeply studied theoretically and practically for the attitude control of the satellite.In this paper, the relevant research background and related projects, supported mainly carried out based on intelligent algorithm for small satellite attitude control algorithm. Main work and innovations are as follows:(1) proposed adaptive orthogonal genetic algorithm, the new algorithm by truncating the selection and combination of negative selection operator pairing ensures orthogonal cross global search capability, simplified PBX excluded individuals overlap and duplication strategy ensures the diversity of the population sex, orthogonal mutation operator has to ensure the adaptive algorithm, elitist selection strategy ensures the convergence rate, we proposed hybrid algorithm using multiple from the performance can be mutually complementary operator, thereby algorithm global search capability has certain advantages; On this basis, also proposed a genetic algorithm based on adaptive orthogonal satellite attitude control algorithm for three-axis satellite attitude control parameter optimization design provides a new way of thinking. On the proposed attitude control algorithm for the simulation experiment results show that:the design of satellite attitude control algorithm is feasible and effective;(2) the traditional PSO analyzed, on this basis, we propose a particle swarm optimization elite, compared to the standard PSO algorithm, the new algorithm makes improvements in two aspects:one, by introducing a the new update function, so that the particles toward the individual with the best location and the best swarm position opposite direction, thus expanding the global search space, and reduces the possibility of local optimum particle;2, through the introduction of the elite selection strategy, while maintaining a high convergence speed, while reducing the likelihood of falling into local optimum. And compared with standard PSO algorithm, the new algorithm is to expand the search space, and the complexity is not high. Multimodal benchmark functions based on some experimental results and the results of previous studies comparing records to prove the effectiveness of the new algorithm, efficiency and robustness; On this basis, it was proposed based on particle swarm optimization elite satellite attitude control algorithm for three-axis satellite attitude control parameter optimization design provides a new way of thinking. On the proposed attitude control algorithm for the simulation experiment results show that:the design of satellite attitude control algorithm is feasible and effective;(3) propose an improved cultural algorithm, the new algorithm is mainly on the update function has been improved, and the best individual for a single gene changes and fine-tuning. And standard cultural algorithm compares the new algorithm to expand the search space. By some experimental results of benchmark functions and the findings recorded before comparison proved the effectiveness of the new algorithm, efficiency and robustness; On this basis, also presented cultural algorithm based on improved satellite attitude control algorithms, for the three-axis satellite attitude control parameter optimization design provides a new way of thinking. On the proposed attitude control algorithm for the simulation experiment results show that:the design of satellite attitude control algorithm is feasible and effective.In summary, this more comprehensive study of the satellite attitude control of the technical principles, methods, performance evaluation and related algorithms, and in-depth study based on the proposed associated with intelligent algorithm, and verified through a large number of experimental samples of the proposed methods the effectiveness of these new experimental results show that:the new proposed method has good performance, these methods are proposed for future research and for engineering applications of remote sensing image processing have a positive meaning.