METHOD FOR DETERMINING FRICTION FORCES OCCURRING ON AN OBJECT MOVING IN A GUIDE ON AN INACCESSIBLE SITE

摘要

The invention concerns a method for evaluating antagonist friction forces occurring after some operating time on a mobile object in a guide. The method consists in measuring the variations of the mobile object displacement, calculating the theoretical frictionless displacement speed, combining those two results and deducting therefrom the external antagonist forces by calculating the acceleration of the mobile object. The invention is particularly useful for evaluating additional friction forces acting on a mobile assembly of control bundles in the core of a nuclear reactor operating on pressurised water.