高速摄影测量仪复合控制

Compound control of high-speed photography measurements

讨论了高速摄影测量仪设计中的复合控制问题 ,研究了提高系统的响应速度和抗干扰能力的方式 .研究表明 ,在高速摄影测量仪与中心站之间的无线数据传输中 ,采用DMA方式接收数据 ,可有效地减少占用CPU的时间 ;通过在数据传输软件里采取设置双缓冲区、选择接收、强制计数、滤波等措施 ,可显著地提高系统的抗干扰能力 .最后讨论了提高高速摄影测量仪引导精度的复合控制方法和控制参数调整方法 .

The compound control problem in the design of high-speed photography measurements is discussed. It is indicated that the data received by use DMA can reduce CPU time effectively. Taking the measures of setting double buffers, selected reception, forced counting and filtering in data transmission software can enhance the system anti-disturbance ability. Methods of compound control and parameter adjusting to raise guiding precision of the high-speed photography measurements are investigated.