Provided is a bending meshing type gear device including a wave generator, an external gear flexibly deformed by the wave generator, and an internal gear meshing with the external gear. The internal gear includes an internal tooth ring portion including an internal tooth formed on an inner periphery, an external connection portion connected to an external member, an easily deformable portion provided between the internal tooth ring portion and the external connection portion, and configured to be more easily deformable than the internal tooth ring portion, and a distortion measurer provided in the easily deformable portion.

A method for identifying gear tooth numbers in a gearbox using data obtained from a vibration measuring device delivered to a data acquisition device and data delivered by a user to a computer device, comprising: processing data delivered by a user to the computer device, where the data comprises a gearbox ratio and a number of stages of a gearbox for calculating a potential gear tooth combination in each stage of a gearbox, calculating frequencies of characteristic features for each potential tooth combination using the data delivered at the processing data, measuring vibration signals of the gearbox, calculating a frequency spectrum from measured data delivered at the measuring, determining an amplitude of components, of the frequency spectrum delivered at the calculating a frequency spectrum at frequencies of characteristic features for each potential tooth combination delivered at the calculating frequencies of characteristic features.

A method for operating a drive train having a power generator, a mechanical power transmission device, and a power receiver wherein the power transmission device is monitored to detect mechanical damage and/or the development of mechanical damage to the power transmission device, wherein detected damage and/or detected damage development is localized and the power generator, the power transmission device, and/or the power receiver are/is controlled such that a mechanical load at the localized damage location and/or damage development location is selectively reduced. A program product including program code sections with which such a method is feasible when the program product is executed on a programmable controller, a computer, or other programmable device.

Methods and systems for a locking differential are provided. The locking differential system includes an electromagnetic solenoid actuator configured to induce locking and unlocking of the differential and a circuit board assembly designed to programmatically control the locking and unlocking functionality. The circuit board assembly includes a multi-sensor sub-assembly having two or more sensor configured to monitor a position of the electromagnetic solenoid actuator.

Methods and systems for a locking differential are provided. The locking differential system includes an electromagnetic solenoid actuator configured to induce locking and unlocking of the differential and a circuit board assembly designed to programmatically control the locking and unlocking functionality. The circuit board assembly includes a multi-sensor sub-assembly having two or more sensor configured to monitor a position of the electromagnetic solenoid actuator.

Methods and systems are provided for controlling and diagnosing one or more clutches in a transmission. In one example, a method for operation of a vehicle system is provided that includes at a diagnostic controller or processing unit independent from a driveline controller or processing unit, respectively, determining an engagement state of a clutch in a transmission of the vehicle system, wherein the engagement state is selected from a group of three or more clutch engagement states. The method further includes identifying an unauthorized clutch state based on the engagement state of the clutch and a speed of the vehicle and responsive to the identification of the unauthorized clutch state, operating the vehicle system in a fault state.

A control system for monitoring a torque converter in a machine is disclosed. The control system includes a first speed sensor associated with a driving shaft of the torque converter. The first sensor is configured to measure an input speed of the torque converter. The control system further includes a second speed sensor associated with an output shaft of the torque converter. The second sensor is configured to measure an output speed of the torque converter. The control system further includes a processing module adapted to calculate a speed ratio based on the signals received from the first speed sensor and the second speed sensor. The control system further includes an output module adapted to provide indication for a seized condition of a one way clutch in the torque converter based on the speed ratio.

The structure for detecting tooth-skipping of the speed reducer of the rotary driver is reduced in weight and size. In the rotary driver the occurrence of tooth-skipping is detected based on the difference in outputs from the encoders located at the input side (the side of the motor) and at the output side (the side of the load), which is opposite the input side in relation to the speed reducer. The rotary driver comprises a motor, a speed reducer located between the motor and a load to reduce the rotary speed of a rotary shaft at the side of the motor, to thereby transmit the reduced rotary speed to a rotary shaft at the side of the load, a first encoder for detecting a rotation of the rotary shaft at the side of the motor, a second encoder for detecting a rotation of the rotary shaft at the side of the load, a section for detecting any difference between a first detected value that is obtained by dividing an output of the first encoder by a rate for reducing the speed by the speed reducer and a second detected value that is obtained from an output of the second encoder, and a section for detecting tooth-skipping that detects tooth-skipping of the speed reducer based on the difference.

Various packaging designs for placement of a magnetic torque sensor at the output shaft of a front wheel drive transmission are provided. One design provides for mounting a sensor on a chain drive sprocket or integrating a sensor into a modified sprocket bearing mount. Another design provides for mounting a sensor at the grounded ring gear of a final planetary drive. Another design provides for mounting a sensor at the differential housing. Another design provides for mounting a sensor at the output planetary carrier hub/park gear. Another design provides for mounting a sensor at a multi-piece transfer gear face.

A method of monitoring a first freewheel interposed between a first drive shaft of a first engine and a rotor. The state of operation of said first freewheel is correct if the first inlet speed of rotation of the first drive shaft lies in a second range of values corresponding to the current stage of operation while the outlet speed of rotation of the rotor lies in a first range of values corresponding to the current stage of operation.