A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. Measured torque values are used during a torque phase of the upshift to correct an estimated oncoming friction element target torque so that transient torque disturbances at an oncoming clutch are avoided and torque transients at the output shaft are reduced.

A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. Measured torque values are used during a torque phase of the upshift to correct an estimated oncoming friction element target torque so that transient torque disturbances at an oncoming clutch are avoided and torque transients at the output shaft are reduced.

A system includes a gear unit, the gear unit including at least one housing cover, a sensor unit, on which sensors are provided, being provided on the housing cover, the sensors being connected at least electrically to an evaluation unit.

An assembly for an aircraft propulsion system includes a planetary gear assembly, a torque sensor, and a controller. The planetary gear assembly includes a sun gear, a plurality of planet gears, a first ring gear, and a second ring gear. Each planet gear of the plurality of planet gears includes a main gear, a first lateral gear, and a second lateral gear. The main gear is engaged with the sun gear, the first lateral gear is engaged with the first ring gear, and the second lateral gear is engaged with the second ring gear. The torque sensor assembly contacts the second ring gear. The torque sensor assembly is configured to generate an output signal corresponding to an axial deflection of the second ring gear. The controller is configured to calculate a torque applied to the output shaft by the planetary gear assembly using the output signal.

An assembly for an aircraft propulsion system includes a planetary gear assembly, a torque sensor, and a controller. The planetary gear assembly includes a sun gear, a plurality of planet gears, a first ring gear, and a second ring gear. Each planet gear of the plurality of planet gears includes a main gear, a first lateral gear, and a second lateral gear. The main gear is engaged with the sun gear, the first lateral gear is engaged with the first ring gear, and the second lateral gear is engaged with the second ring gear. The torque sensor assembly contacts the second ring gear. The torque sensor assembly is configured to generate an output signal corresponding to an axial deflection of the second ring gear. The controller is configured to calculate a torque applied to the output shaft by the planetary gear assembly using the output signal.

An arrangement for estimating the input torque of a dual-clutch transmission for a vehicle is provided. The transmission includes an inner input shaft and an outer input shaft arranged concentrically with respect to the inner input shaft. The arrangement further includes a dual-clutch assembly connecting the shafts to an output shaft of an engine. A torque sensor is arranged on the outer input shaft and connected to a transmission control unit. By torque sensor, a measured torque value is provided during operation of the outer input shaft and for providing an estimated torque value during operation of the inner input shaft.

An arrangement for estimating the input torque of a dual-clutch transmission for a vehicle is provided. The transmission includes an inner input shaft and an outer input shaft arranged concentrically with respect to the inner input shaft. The arrangement further includes a dual-clutch assembly connecting the shafts to an output shaft of an engine. A torque sensor is arranged on the outer input shaft and connected to a transmission control unit. By torque sensor, a measured torque value is provided during operation of the outer input shaft and for providing an estimated torque value during operation of the inner input shaft.

A torque monitoring system includes a rotatable measurement interface and a stationary data receiver. The measurement interface is configured to be attached to a rotatable shaft. The measurement interface includes a strain gauge, a processor, and a near field communication (NFC) transceiver coil. The stationary data receiver is stationary with respect to the rotating shaft. The stationary data receiver includes a processor and an NFC transceiver coil. The rotatable measurement interface receives operating power via its NFC transceiver coil that is derived from a radio signal wirelessly transmitted by the NFC transceiver coil in the stationary data receiver. The processor in the rotatable measurement interface is configured to receive strain gauge signals from the strain gauge indicative of torque on the rotatable shaft and wirelessly transmit digital data indicative of the strain gauge signals through the NFC transceiver coils to the processor in the stationary data receiver.

A method for estimating torque transmitted to a structure located downstream of a transmission system of a vehicle is disclosed. The vehicle comprises an engine for generating torque, a transmission system configured to transmit a fraction of the torque generated by the engine to a plurality of wheels of the vehicle, and a further fraction of the torque generated by the engine to the structure. The transmission system includes a shaft arrangement interposed between the engine and the structure, a planetary gearing supported by the shaft arrangement, and a transmission unit arranged in parallel to the shaft arrangement. The torque transmitted to the structure is estimated on the basis of a group of parameters which comprise torque upstream of the transmission system, twist of the shaft arrangement, and a parameter which is indicative of the ratio between an output rotational speed at an output of the transmission unit and an input rotational speed at an input of the transmission unit.

A method for estimating torque transmitted to a structure located downstream of a transmission system of a vehicle is disclosed. The vehicle comprises an engine for generating torque, a transmission system configured to transmit a fraction of the torque generated by the engine to a plurality of wheels of the vehicle, and a further fraction of the torque generated by the engine to the structure. The transmission system includes a shaft arrangement interposed between the engine and the structure, a planetary gearing supported by the shaft arrangement, and a transmission unit arranged in parallel to the shaft arrangement. The torque transmitted to the structure is estimated on the basis of a group of parameters which comprise torque upstream of the transmission system, twist of the shaft arrangement, and a parameter which is indicative of the ratio between an output rotational speed at an output of the transmission unit and an input rotational speed at an input of the transmission unit.