Study On The Electronic Subdivision Of The Radical Grating Encoder

Modern science and technique of fast fierce development, make mankind social into an information for ages, information technique plays decisive role for the development of society. Sensors be placed in the head of the auto examination and control system, its function like person's ears and eyes, its function will be direct influence the whole system of work appearance and quality.We can say, test technique and auto control level of high or low, is measure a nation science and technique modernization degree of importance marking.After mankind's society get into industrialization, the measure technique seem to be more important, as modernization step of speed,hige accuracy of measure the technique seem to be more important.In numerous length and angle the measure technique, light grid measure of the accuracy is the tallest, advantage of structure tightly packed, function stability, hard credibility, the anti- interference's ability be strong, vivid with high speed, usage and install convenience, product life span long etc. It is extensive application in the industry automation of havings realm, include measure and control to the dynamic state of the servo system, like tool machine, the instrument appearance, production line, semi-conductor, electronics, medical treatment, scan, printing, research, measure and image etc..For the past several decades, people use various way to raise the light grid sensor of measure accuracy, include optics and the electronics subdivide, but ability not yet satisfy society development of need, the practical value is need to further development.This text has been extracted development experience of the light grid measures for the past several decades, appliing to modern science and technique, adopting the interpolation IC, improming the subdivide electric circuit, obtain good result, have better practical value.