【摘要】 介绍了一种新颖的基于DSP的视频信号采集和处理的调速系统.系统采用了TI公司TMS320VC5402作为控制芯片,通过CCD摄像头进行图像捕捉,并经过视频A/D转换器进行数字量化、DSP进行运算处理,最后由经主电路驱动电机控制器,实现自动调速的功能.在设计过程中,详细地对视频信号的有限长单位冲激响应数字滤波器进行设计.最后,通过仿真以及实验证明了该种控制方法的有效性及实用性.更多还原

【Abstract】 A novel speed control system based on DSP video signal’s sampling and operation is presented. TMS320VC5402 of TI Corp. is used as the main control chip, and the CCD camera as the image-capturing device. The image which has been captured is changed into digital signal through the video A/D converter, afterward the numeric value is sent to DSP, and finally the DSP’s computing result is exported to the motor to controlling its speed. The FIR digital filter for the limited-length unit impulse response of the video signal is designed. Finally, the novel control method’s availability and practicability are demonstrated by the simulation and experimentation.更多还原