The Designing of Camera Stablized Platform
|Title||The Designing of Camera Stablized Platform|
Camera stable platform of dural axises is an important field among the applications of the inertial technology,as a stable platform is for aerial photography of the external of the unmanned aircraft,aims at reducing the attitude change and shake of aircraft in order to obtain clear picture. At present for such a platform, it mostly includes flexible gyroscope, torque motor and control components, which are similar to the military pod structure. But this platform cost most and had bad impact on limited capacity, and the analog circuit parts of the system are bulky, high cost and failure rate. Combined with these, the paper will propose a two-axis stable platform of camera based of FPGA,control actuator and MEMS gyroscope.Considering the advantage of camera stable platform and MEMS gyroscope with small size, light weight, low power consumption, low cost, high reliability, easy-to-digital technology, ets. The paper design a set of controller based on FPGA and MEMS gyroscope applied for camera stable platform.Considering that the system parameter will be change in the bad operating environment, PID control algolrithm has been taken into account,which having realized the design of camera stable platform.This paper introduces the principle and overall plan of the of camera stable platform and nextly introduces the analysis, simulater and design for structure.Hardware mainly uses the FPGA chip of Altera’s cyclone models, and based on this,builds a FPGA auxiliary circuit .The hardware processor mainly uses the embedded soft-core processor Niosâ…¡.Then add the system required such as SPI, PWM and UART modules. The part of software designing a Kalman filter, PID controller and the attitude solution and Matlab simulation.At last when debugged the whole system on the basis of software and hardware design, the results show that this system has a good performance in the field of speed, accuracy and anti-interference ability.
|Subject||FPGA, MEMS, Stablized Platform,|
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