Error correction recording method for rotary magnetic scales. Regularization of reproduced amplitude by the recording current control.
Tadashi MASUDA, Makoto Kajitani · Journal of the Japan Society for Precision Engineering · 1988
This paper describes the recording method for rotary magnetic scales to regularize the reproduced amplitude. It is the method to control the recording current in proportion to the characteristic of electro-magnetic-conversion on the recording surface. The scale with the regular amplitude has been recorded by the method. By the method, combined this method to the error correction recording method described in the first paper, the scale has been transcripted of which the angle position error is an accuracy of about 0.3″ and the regulation of the reproduced amplitude is about 4%. It is confirmed that the angle position error of the scale is independent on the fluctuation of the triggerlevel and the gain in the detector.