Hi folks, I need a help. As I am basically an electrical engineer I have succeeded in micro-stepping a stepper motor by 128 micro steps of step angle 1.8degrees which mean it can at one instance move by as small as
0.014degrees. Well the problem now is that I need to convert this angular motion into its equivalent linear motion(i micron) so that I get a micron level motion. As not many were able to help me out in this regard, I started browsing the net for some way of achieving this conversion. I hit upon something on which I need your help. In a compact disk there is a rack and pinion arrangement which is capable of moving by 0.5micron (maybe, 0.05 micron...me not pretty sure). There is an optical arrangement of infra red beam which runs on this rack and pinion and which is reflect on to the ridges of a cd so as to store data in cd's. as the distance between adjacent ridges of cd is in the order of 0.5 micron(or maybe 0.05 micron) so this rack and pinion must support such minute movement of 1 micron that is required in my project,I feel. Cant this apparatus satisfy my need? Respond as soon as possible friends suchi- posted
18 years ago