The Level of Accuracy of Generation Moment Determination of Impulse Excitation of the String Converter and its Impulse on the Information and Measuring Systems and Their Ability to Work

The article is devoted to the problem of improving the reliability of information and measuring control systems based on string converters with impulse excitation method and ensuring the maximum “signal/noise” ratio at their output. The influence of the parameters of the excitation impulse sequence of continuous string oscillations on the amplitude and stability of its oscillations is also considered. The optimal phase of excitation impulses which ensures the stability of the primary transducer is experimentally determined. The results of experimental studies revealing the influence of the excitation impulse phase on the string oscillations amplitude are given. The comparison of the experimental data with theoretical ones is carried out and hypotheses explaining their difference are put forward. The ways of decreasing the impact of inaccuracy in determining the phase of excitation impulses on the amplitude of string oscillations and improving the reliability of information-measuring systems for monitoring the technical condition of unique buildings on the basis of string sensors with an impulse excitation method are proposed.