| Space technology is the most influencing technology of moden science and technology.with widespread use of application satellite,people pay more and more attention to high accuracy and durability Attitude control system.Attitude detemination and control system of a satellite contains two parts,one is the attitude detemination system and the other is the attitude control system.Detemination of attitude is the search about attitude arientation on a benchmark.Control of attitude is the access of direction on the predefine way.This paper only refer the system of attitude control for lace of space.If there is no special explain,the control system refered in this paper does't contain attitude detemination system.This paper studies on the attitude ontrol system of three-axis stabilized satellite systematically,and makes deep study on the design of attitude control system.The main work of this paper is as follows:First,found whole mathematical model about attitude control system of satellite.It contains kinematics model,dynamic model,actuator model and torque model.Analyse the conmmen characteristic of actuator of satellite's attitude control system.Then in allusion to biased momentum wheel system,based on classical control system a PID controller was design about pitching channel.According to specialty of roll-yawing channel,this paper discuss long-time cycle movement and short-time cycle movement.When design the control method of long-time cycle movement,whiff thruster is used to assistant the control system.When design the control method of short-time cycle movemen,in order to sovle the problem of coundn't abtain the angular velocity signal, nonminimum phase controller advanced by Terasaki is used.In allusion to zero momentum wheel system,Analyse about security of zero momentum wheel is made,then several structures which can be used to this system are given.Based on these structures,rational predigestion is made to the satellite model and gained simplified model.Firstly,classical controller such as... |
