Research on Biparametric Resonant Displacement Sensors Deviation

BPRS displacement and its characteristics showed that the possible causes of deviations are imperfections of the method, operating principle, manufacturing inaccuracy, the volatility voltage amplitude of the power source, its form, and frequency, as well as other adverse external conditions. The most important characteristic of biparametric resonance sensors ( BPRS ) of displacement, like any measuring transducer, is its deviation [1]. In this work, the deviation of the BPRS movement was estimated by the method of parametric structural schemes (PSS) [3]. The advantage of this method is the ability to analyze deviation that is invariant from the physical nature of the phenomena occurring within the sensors. Besides, this method is visual and convenient when compiling deviation equations that take into account all their types. The PSS of the developed BPRS displacement taking into account possible sources of deviations is shown in Figure 1. In view of the systematic and random component of the deviation of each elementary transformation according to PSS, it is allowed to write the following system of equations for the right section of the BPRS :