Analysis of dynamic error of movement measurement method by measuring converter of inductosyn type based on phase shift measuring

Movement meters are used in various technical and technological areas. Movement meters of the following types: inductosyns, rotary transformers, selsyns, optical grating displacement transducers and also laser based movement meters, are known. Movement meters of the inductosyn type based on conversion of angular moving to amplitude the greatest distribution was gained now. But currently a significant amount of equipment, in which inductosyn movement measuring meters are used, is in operation. Inductosyns are characterized by such features as reliability, durability, low static measurement error and ease of maintenance. The method based on angular displacement conversion into a phase is one of the methods for movement measuring with inductosyns. The availability of dynamic error is a significant disadvantage of this method. Thus, the task of the analysis of dynamic error of movement measurement method by measuring converter of inductosyn type based on phase shift measuring is relevant and has scientific and practical interest. The article describes a movement measurement method by measuring converter of inductosyn type based on phase shift measuring. The occurrence and time behavior of dynamic error of the method are considered. The dependence of maximum absolute dynamic error of movement on the movement speed and supply voltage frequency is determined. As a result of the performed analysis, it is concluded that the considered method can be used without dynamic error compensation at the correct choice of speed, frequency of inductosyn supply voltage and measurement accuracy values. However, the use of dynamic error compensation methods will give the possibility to expand the measurement method characteristics that is to increase the maximum value of movement speed and measurement accuracy

measurement error; measurement method; movement measurement; measuring converter; inductosyn