%0 Journal Article %T DETERMINING THE TECHNICAL CONDITION OF PISTON MACHINES BASED ON THE RESULTS OF MEASURING THE ANGULAR SPEED OF THE SHAFT %A El'hutov, S.N. %A Lavrik, A.A. %K Piston machine, acceleration, encoder. %J Modern Technologies and Scientific and Technological Progress %D 2022 %N 2021 %P 1 %I Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»