A focusing method by adjusting two slit mark images was proposed to realize accurate focusing of a non-mydriatic fundus camera for an observed retina image in dark. 为实现免散瞳眼底相机在被观测眼底图像较暗情况下的精确调焦,提出了双光楔裂像调焦方法。
In the process of on-line controlling, the polynomial function is supervising the states of plant and adjusting three parameters of PID controller when the evaluation factor is beyond the evaluation mark. 在线控制过程中,监督函数监督被控对象的状态,并在其评价指标超标时对PID控制器的参数进行及时调整。