Embedded Control System Based On Tms320f2812 Format Type Air Like Mechanism Research

Improve the shutter speed, accurate image motion compensation are two key factors inimproving frame-type aerial camera image quality. Traditional ways of shutter driven curvesused the linear drive, driving curve programming is simple, but the output torque of the motorhas not been fully used, also not very consistent with torque-frequency characteristics ofstepper motors, it did not give full effect to the system performance.In order to improve theperformance of aerial cameras, this article is based on the original characteristics of aerialcameras, on the premise of only changing electric control system, consider the functions ofthe system, such as optimal shutter system, image motion compensation and LED edgeexposure function, analysed and designed a DSP-based embedded camera control system.This article describes aerial camera systems at first, research and analyse the defects ofthe original frame aerial camera systems, give the key points to improve thesystem.According to the features of the module which need to be improved, used DSP F2812as the main control chip,designed camera control system based on F2812, and select theappropriate step motor and stepping motor drive for simulation.And then through the research of the traditional stepper motor deceleration curve,designed a suitable driving nonlinear curve for the stepper motor, programmed the nonlinearcurve into DSP control system. And summarize the general step motor deceleration curvecalculation step.Through the integration of shutters, image motion compensation, communications, spoolfilm, air pump,LED,etc, improved the functions of the system, simulated and verified theperformance of embedded system. Last compared with traditional control methods,gave theoutput signal of the system, and summarized the advantages and disadvantages of the systemand look forward to the prospect.