An apparatus for detecting a fault in an in-wheel driving system of a vehicle including: an in-wheel motor; at least one speed reduction part coupled to the in-wheel motor through a gear and transferring a rotation force of the in-wheel motor to a wheel; a sensor part sensing rpms of the in-wheel motor and the speed reduction part; and a control unit suitable for calculating an rpm ratio between the in-wheel motor and the speed reduction part by using the respective rpms sensed through the sensor parts and determining whether a damage or a fault has occurred in the speed reduction part, based on the calculated rpm ratio.

An apparatus for detecting a fault in an in-wheel driving system of a vehicle including: an in-wheel motor; at least one speed reduction part coupled to the in-wheel motor through a gear and transferring a rotation force of the in-wheel motor to a wheel; a sensor part sensing rpms of the in-wheel motor and the speed reduction part; and a control unit suitable for calculating an rpm ratio between the in-wheel motor and the speed reduction part by using the respective rpms sensed through the sensor parts and determining whether a damage or a fault has occurred in the speed reduction part, based on the calculated rpm ratio.

A belt drive for a work machine is disclosed. The belt drive has a drive belt that is wound around an input pulley and an out put pulley. The input pulley is rotated by a motor, and when rotated, transfers rotational motion to the output pulley by the drive belt. A controller is in communication with an input speed sensor that measures the input pulley and an output speed sensor that measures the output pulley. The controller calculates an input speed from the measurement of the input pulley, and an output speed from the measurement of the output pulley. The controller also sends a damaged belt signal to an operator control of the work machine when the output speed is lower by a predetermined threshold than the input speed.

A belt drive for a work machine is disclosed. The belt drive has a drive belt that is wound around an input pulley and an out put pulley. The input pulley is rotated by a motor, and when rotated, transfers rotational motion to the output pulley by the drive belt. A controller is in communication with an input speed sensor that measures the input pulley and an output speed sensor that measures the output pulley. The controller calculates an input speed from the measurement of the input pulley, and an output speed from the measurement of the output pulley. The controller also sends a damaged belt signal to an operator control of the work machine when the output speed is lower by a predetermined threshold than the input speed.

An electric power train includes an electric drive, an electric motor driven by the electric drive, and a meshing pair of a drive gear and a driven gear. The drive gear is coupled to the electric motor and the driven gear is coupled to a mechanical load. The backlash of the meshing pair of the drive gear and the driven gear is measured and estimated based on a time until a contact of teeth of the rotating drive gear and the driven gear during a startup of the electric motor. Wear of the meshing pair of the drive gear and the driven gear based on a change in the measured backlash over time during the operation of the electric power train.

An electric power train includes an electric drive, an electric motor driven by the electric drive, and a meshing pair of a drive gear and a driven gear. The drive gear is coupled to the electric motor and the driven gear is coupled to a mechanical load. The backlash of the meshing pair of the drive gear and the driven gear is measured and estimated based on a time until a contact of teeth of the rotating drive gear and the driven gear during a startup of the electric motor. Wear of the meshing pair of the drive gear and the driven gear based on a change in the measured backlash over time during the operation of the electric power train.

A belt-type continuously variable transmission includes an actual gear ratio calculation unit for calculating an actual gear ratio based on the rotation speed of a drive pulley and the rotation speed of a driven pulley, a reference gear ratio calculation unit for calculating a reference gear ratio by modifying the actual gear ratio based on an input torque and a driven pulley hydraulic pressure, and a condition determination unit for, in a case where the target gear ratio is an overdrive gear ratio, determining that at least part of rings of a belt is missing when the reference gear ratio is greater than or equal to a predetermined gear ratio and a drive pulley hydraulic pressure is greater than or equal to a predetermined hydraulic pressure.

A system includes a first planetary gear set comprising a first sun gear, at least one planetary gear, and a first ring gear designed to rotate at a speed lower than an operating speed of rotating equipment. The system further comprises a second planetary gear set comprising a second sun gear, at least one planetary gear, and a second ring gear designed to rotate at a speed lower than the operating speed of the rotating equipment. The system further comprises at least one laser source installed on the first ring gear of the first planetary gear set and at least one laser receiver installed on the second ring gear of the second planetary gear set. The at least one laser source corresponds with the at least one laser receiver to measure alignment readings while the rotating equipment is rotating at speeds up to and including the operating speed.

A deterioration diagnosis apparatus is for a mechanical apparatus including a power transmission mechanism that transmits power via a gear. The deterioration diagnosis apparatus includes: a storing unit that stores, in advance, a trend of change along with the operation of the mechanical apparatus, in consumption rate of an additive contained in lubricant used for the gear; and a determination unit that determines the period to be taken for the consumption rate of the additive to reach a predetermined value, based on the trend of change in the consumption rate of the additive.

A deterioration diagnosis apparatus is for a mechanical apparatus including a power transmission mechanism that transmits power via a gear. The deterioration diagnosis apparatus includes: a storing unit that stores, in advance, a trend of change along with the operation of the mechanical apparatus, in consumption rate of an additive contained in lubricant used for the gear; and a determination unit that determines the period to be taken for the consumption rate of the additive to reach a predetermined value, based on the trend of change in the consumption rate of the additive.