A transmission includes an input shaft and an output shaft, the input shaft selectively accepting a torque input from a prime mover, and the output shaft selectively providing torque output to a driveline. A controller determines a shaft displacement angle representing an angle value of rotational displacement difference between at least two shafts of the transmission, and performs a transmission operation responsive to the shaft displacement angle.

A solution for measuring torque and other parameters of a mechanical component is provided. At least two bands can be affixed to the mechanical component and at least two sensing assemblies can be operatively coupled to each band. Each sensing assembly generates signals indicative of relative movement between a respective band and the sensing assembly. A signal conditioner conditions the signals for a computing unit to determine the torque to the mechanical component. The computing unit can determine the torque from a twist of the mechanical component that can be correlated with the torque.

A magnetic gas turbine sensor (25) for sensing the speed and/or torque of a shaft in a gas turbine engine, the sensor comprising a magnetically energisable pole piece (3), a magnet (2) associated with the pole piece and a conductive sensing element (4) wrapped or wound around the pole piece (3) and inductively coupled to the pole piece. The sensor includes a first sensor casing including a first inner fluid conduit (36) for fluid coolant, the first fluid conduit being inside the casing and running alongside and/or adjacent the pole piece, magnet and/or conductive sensing element, and the sensor also including a second sensor casing surrounding the first sensor casing and defining a second outer fluid conduit (37) for fluid coolant and at least partially surrounding the first fluid conduit. Fluid coolant may flow into the sensor at its proximal mounting end, through the first fluid conduit over or through the pole piece, magnet and/or conductive sensing element to the sensing end, and then through the second fluid conduit from the distal sensing end (29) to the outlet at the proximal mounting end (31).

A method of monitoring a power drive unit installed on an aircraft is provided. The method includes causing, by a controller, sensors to measure an angular position at corresponding locations along at least one wing of the aircraft. The controller, as part of the method, receives the angular position from the one or more sensors and analyzes the angular position to generate feedback information to implement the monitoring of the power drive unit.

A torque measurement system includes a first rotatable carrier structure mechanically coupled to a rotational shaft; a second rotatable carrier structure mechanically coupled to the rotational shaft; a first mutually coupled structure including a first track mechanically coupled to the first rotatable carrier structure and a second track mechanically coupled to the second rotatable carrier structure, where the first track and the second track are coupled together by a first torque dependent coupling; a second mutually coupled structure including a third track mechanically coupled to the first rotatable carrier structure and a fourth track mechanically coupled to the second rotatable carrier structure, where the third track and the fourth track are coupled together by a second torque dependent coupling. In response to a rotation of the rotational shaft, the first torque dependent coupling is configured to increase and the second torque dependent coupling is configured to decrease.

A method of determining a torque applied to a rotatable shaft is provided. The method includes transmitting a first electro-magnetic transmit signal towards a first mutually coupled structure mechanically coupled to the rotatable shaft, converting, by the first mutually coupled multitrack structure, the first electro-magnetic transmit signal into a first electro-magnetic receive signal; receiving the first electro-magnetic receive signal; evaluating the received first electro-magnetic receive signal; and determining the torque applied to the rotatable shaft based on the evaluated first electro-magnetic receive signal.

A torque sensor assembly comprises a shaft configured to receive an applied torque. The shaft comprises at least one region, which is magneto-elastic and configured to generate a magnetic field in response to the applied torque. A pair of sensing coils disposed adjacent to the region is configured to sense the magnetic field. One or more sensors sense a temperature of each of the sensing coils. A controller is coupled to the pair of sensing coils and the sensor(s). The controller is configured to receive the sensed temperature of each of the sensing coils, determine a temperature difference between the sensing coils and generate an output signal based on the sensed magnetic field. The output signal accounts for the temperature difference between the sensing coils.

The present invention includes: first to fourth Hall elements for detecting steering torque; a first power supply circuit for supplying power to the first and second Hall elements; a second power supply circuit for supplying power to the second and third Hall elements; and a control device including a first abnormality determining unit for determining whether first and fourth torque signals are abnormal by preparing the first torque signal output from the first Hall element with the fourth torque signal output from the fourth Hall element and a second abnormality determining unit for determining whether second and third torque signals are abnormal by comparing the second torque signal output from the second Hall element with the third torque signal output from the third Hall element. With this, even when abnormality occurs in one of the first and second power supply circuits, the abnormality determination of an output signal can be continued.

A transmission includes an input shaft and an output shaft, the input shaft selectively accepting a torque input from a prime mover, and the output shaft selectively providing torque output to a driveline. A controller determines a shaft displacement angle representing an angle value of rotational displacement difference between at least two shafts of the transmission, and performs a transmission operation responsive to the shaft displacement angle.

The present invention provides a multi-turn absolute torque angle sensor module containing a main gear magnet which includes a first magnet part in which a master track and a nonius track, in which magnets having different polarities are alternately disposed, vertically disposed on a circumferential surface portion of the first magnet part and the polarity distributions of the master track and the nonius track are to be shifted from each other by a difference of one or more polarities.