Stability Control Dual-axis Dsp-based Platform Design

This thesis designes a stable platform with two axes based on DSP, describing itsrequirement and target, as well as the realizing method. This platform is mainly used tocontrol the optical axis of frame TV-guided aimer to be stable. DC motor is often selectedas the torquer, however, step motor is character of precise locating and easy controlling,so the target with step motor has been implemented.The platform consists of four main parts: rocker, controller board, motor drivers andframe optical system. This thesis gives a particular description on the hardware andsoftware design of controller board, on which the MCU is Tms320F2812 and the ADC isADS7852.The control method, with respect to the software, is integral-separated PIDbased on Z-N formula.Program on board, including four modules: sampling data, serial communication,processing data and driving motors, is designed in a module manner. This thesis executesa simulation of platform modle in MATLAB,the result shows that the modle is valid. Atlast, Some tests are implemented, the platform performes well as expected, althoughsome parts are still to be perfected.