METHOD OF CALIBRATION OF GROUPS OF GAUGES OF FLAT ANGLE WITH SUMMARY RANGE OF SCALES NOT LESS 360° Russian patent published in 2009 - IPC G01B11/26 G01B21/22 

FIELD: measuring technology.

SUBSTANCE: invention refers to metrology, particularly to methods of calibrating goniometrical and angle specifying devices of a rotary type forming discrete circular scales of full and (or) not full ranges by means of comparing them with reference devices (reference scales). The essence of the invention is as follows: the disclosed here method is based on adjusting indices of the plan of measuring procedure and on performing interactive control of accuracy of its results. Adjustment is carried out by means of adaptive modifications of procedures of preparation and measuring. The procedure is established as sequence of comparisons of angles between marks of each of calibrated scales taken in pairs; also combinations of marks (pairs) are formed in series, number of which is not specified beforehand. Obtained primary data are processed by the method of the least squares on base of model equations connecting measured parametres; while algorithm of processing contains blocks of check of uniform precision of series (with their possible reject) and check of adequacy of accepted model ( with its possible refinement). The procedure is interactive and lasts till achieving required or utmost possible accuracy of results.

EFFECT: expanded range of discreteness of calibrated circular scales and refusal of full range requirement; also facilitating control over accuracy of calibration, including accuracy due to refinement of model of primary data.

6 cl, 5 dwg