METHOD OF EXPERIMENTAL-THEORETICAL DETERMINATION OF FRICTION CHARACTERISTICS OF KINEMATIC CHAIN ELEMENT FOR ROTARY MOVEMENT TRANSMISSION CONSIDERING ROTATION FREQUENCY AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2012 - IPC G01N3/56 

FIELD: electricity.

SUBSTANCE: shaft mounted in friction couples is brought to rotation using outside source of energy. Drive shaft of source of energy is disconnected from shaft mounted in friction couples, rotation frequency ω₁ of this shaft is recorded and in parallel timer (stop-watch) is set to time t during which rotation frequency of friction couple falls down to value ω₂; by means of proportion value of moment M_R of resistance to torsion upon preset loading moment M_"ПОЛ" is determined; due to which desired friction characteristics of friction couple are determined: friction f_FR factor and moment M_idle of idle run. Device consists of frame on which by means of fixed supports shaft is mounted provided with tested friction couples containing sectional flywheel with changeable mass and moment of inertia. The shaft has detachable joint with electromotor drive shaft. Flywheel is provided with system of reflectors with optical communication with emitter-receiver which is connected to computer through interface unit. Gage is connected to compound lever.

EFFECT: providing possibility of determination of friction characteristics at various speed modes and determination of functional dependence of change of idle run moment on rotation frequency of kinematic chain element.

5 cl, 3 dwg