Boundary inverse problems of heat exchange for sliding bearing control and diagnostics

Abstract

A new method was developed for on-line evaluation of heat diagnostics of friction which allows reconstruction of friction torque in a sliding bearing while in operation. The method utilizes reconstruction of friction power from temperature measurements based on heat conduction boundary inverse problem solution. The method is based on the fact that nearly the entire amount of energy spent on friction, transforms into heat. It is assumed that thermal characteristics of materials of the sliding bearing are known and do not depend on temperature. It is necessary to determine temperature field in the sliding bearing that changes in a given time interval. Obtaining quantitative values of friction torque while the bearing is in operation allows acquisition of a number of tribotechnical parameters that characterize sliding bearing performance on the basis of corresponding thermocontact problem solution. This, in turn, increases reliability of control and diagnostics of the sliding bearing in operation.

Keywords:

• Control
• diagnostics
• heat regime
• sliding bearing
• mathematical modeling

^*Corresponding author. [email protected]

^*Corresponding author. [email protected]

Notes

^*Corresponding author. [email protected]