Study On Short Time Memory Control In Attitude Control Of Spacecraft

In today's world, aerospace science and technology have been developing rapidly, and various types of aircraft used more and more widely. Various requirements for performance of spacecraft is growing up. Flight path and Attitude are the two important factors which determine the spacecraft application function, and important part of the overall design of the spacecraft engineering. These two factors directly affect the design of spacecraft's applicative payload and formulated the indexes of spacecraft's applicative performance. After the spacecraft was launched into orbit and worked, the control orbit and attitude is the core of spacecraft operation and management, directly influence the task of the application and spacecraft's on-orbit lifetime.Systematically study the three-axis stabilized satellite attitude determination and attitude control system, memory algorithm proposed approach posture parameters. The same time, the main control modes detailed theoretical analysis and specific Matlab simulation. This mainly includes the following:Orientation on the ground for three-axis stabilized satellite, considering the gravity gradient, Solar radiation, atmospheric drag, earth's magnetic field such as the impact of environmental factors on the satellites to establish a more accurate satellite attitude dynamics model, while the establishment of the Euler angles describing the attitude kinematics equation. The article simply introduced some classical control methods. With PD and optimal control of classical control theory model of the spacecraft attitude dynamics modeling, and conducted a detailed MATLAB simulation. Memory algorithm control is a simple design, calculation get better control results. Memory control scheme based on a detailed explanation of the structure, and memory control method applied to nonlinear systems. The emergence of memory algorithm for satellite attitude control system provides a more simple control method. This article will run in memory of spacecraft attitude control algorithm and its detailed design and tuning parameters.Memory algorithms in spacecraft attitude control system model, using Matlab simulation, simulation results obtained; The simulation results and actual results and the classical control simulation results were compared to verify the correctness of memory algorithmic control and superiority. In short, the article more in-depth study of the satellite attitude control system, memory algorithm for satellite attitude control of spacecraft attitude control system control the general design and realization of a good guide.