| At present,countries all make efforts to study the infrared seeker servo control system,which is important to improve performance of the infrared seeker's tracking velocity and tracking accuracy.In the thesis,it is a computer controlled system based on FPGA and ARM that is designed by Combining with the research object,which mainly includes hardware circuit design,software design and control algorithm research.Firstly,in the thesis,it is the infrared seeker servo control system for stabilized platform that uses a mechanical structure with pitching axis and the bearing axis,which is based on gyro platform stabilizing.In the infrared seeker control system for stabilized platform,it includes reserve control loop,stabilizing loop and angle tracking loop.However,when the missile is in terminal guidance,the control loop of the infrared seeker control system only consists of stabilizing loop and angle tracking loop.Secondly,the controlled system uses solution based on dual-core hardware architecture design of FPGA and ARM in the the infrared seeker servo control system for stabilized platform.FPGA is used to sample the angle of sight and angle-velocity of rate gyroscope signals.ARM is used to handle data,design and compute control arithmetic and control motor.At the same time,it is the software platform based on hardware that is designed in the thesis,which includes writing the interface program of FPGA,transplanting embedded?C/OS-? software system and designing tasks of ?C/OS-? software system.Finally,the infrared seeker servo control system's mathematical model is built in the thesis,focusing on the stabilizing loop's and the angle tracking loop's mathematical model when the missile is in terminal guidance.The infrared seeker servo system is a type of double closed loop control system with position and speed loop,so cascade control is used.Meanwhile,it is the delay of system caused image-processing and digital computation that is focused on studying. |
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