SUBSTANTIATION OF RELIABILITY OF SERVOMOTORS FOR SMALL-SIZED UNMANNED AERIAL VEHICLES

Abstract

One of the key tasks in the design of small-sized unmanned aerial vehicles (UAVs) is to ensure acceptable and certifiable reliability indicators for accepted components of commercial off-the-shelf systems (CGS). Ball bearings and sleeve bearings are the most common type of bearings used in engines. Worn bearings, vibration, overcurrent and dirty potentiometers are among the causes of failures, in addition to component wear. The article presents experimental results obtained to quantify the reliability of MBLA servomotors by recording their time to failure in a certain set of test runs. Servos are widely used in modern high-precision control systems for moving objects. The Weibull prediction model is used for quantitative analysis and related key mathematical models and can be applied to a wide range of data. Operating time to failure, number of cycles to failure, mileage to failure, mechanical damage or similar continuous parameters must be recorded for all objects. The methodology adopted for conducting tests and used for the experiment is described. The design elements, their interrelation and the order of operation on an unmanned aerial vehicle are considered in detail.