| 摘要 |
FIELD: automatics and computer science. ^ SUBSTANCE: shaft of first and second indicators is rotated within range 360°(1/rho1rho2), where rho1 and rho2 - number of periods of error of respectively first and second indicator at rotation, shaft rotation angle is transformed to signals of indicators with various spatial error spectrums, indicator signals are transformed to first and second angle codes, differences of angle codes is calculated, first increments of angle code differences is detected at shaft rotation for rho2 steps, on basis of amplitudes A'i and phases &phis;'i of spatial error harmonics of first indicator are determined, by multiplication of spectral components of first increments for , and shifting their phase for angle pi/2-pi.i/rho2, correction is generated as sum of error harmonics of first indicator, output code is generated, by adding correction to first angle code. ^ EFFECT: higher precision of transformation of shaft rotation angle to code. ^ 1 dwg |
