System and method for monitoring state of function of a materials handling vehicle

摘要

UKIN D / YDi A plurality of industrial vehicle operating parameters are observed and evaluated to monitor drivetrain(s) of the vehicle to determine whether a traction motor has become 5 decoupled from its drivetrain, i.e., a dynamic gearbox failure. If a dynamic gearbox failure is detected, a static test is performed while the vehicle is stopped to confirm the failure. Drive capabilities of the vehicle are restricted if the dynamic gearbox failure is confirmed by the static test while full drive capabilities are enabled if not. A parking brake test is performed by applying each mechanical brake that is attached to a traction motor or a driving wheel and 10 then individually controlling the traction motors in accordance with an operator's travel request such that each motor produces enough torque to rotate the motor if the brake its respective drive wheel is functionally degraded. The torque is applied in the direction of the operator's travel request so that any movement of the vehicle due to inadequate mechanical braking will not be unexpected by the operator. 4228771_1 (GHMatters) P93277.AU