METHOD OF DETERMINATION OF CABIN DOOR DYNAMIC MASS AND MEAN FRICTIONAL FORCE, AND DEVICE FOR ITS REALIZATION Russian patent published in 1998 - IPC

FIELD: automatic control of lifts, in particular, quantitative determination of the mass and frictional force of all movable interconnected parts in the sliding doors system relative to the door winds. SUBSTANCE: the door wing is subjected to a training opening run and closing run. In the test section the run is performed with determination of kinematic parameters V₁,V₂,S₁ or V₃,V₄,S₂, and first energy balance EB1 or second energy balance EB2 is drawn up. Energy balances EB1, EB2 contain potential energy of the closing weight with a positive or negative sign. Special formulas are given in a combination for numerical determination of the values of dynamic mass Md and mean frictional force E_p of the sliding doors system. For measurement, storage and processing of kinematic parameters, as well as for computation of numerical values of dynamic mass Md and mean frictional force F*r

use is made of a microprocessor and a door drive increment transducer. The method is applicable to inertial systems and their physical parameters in general, and it is especially suitable for determination of maximum allowable closing speed V_smax of doors of the sliding and turning types. EFFECT: facilitated procedure. 9 cl, 3 dwg