Provided is a sensor device that detects a predetermined state quantity, including: a correction unit that performs first detection and second detection having a smaller generated state quantity than the first detection, and that corrects a detection value of the first detection, based on a detection value of the second detection.

A sliding bearing element with a first layer having a radially inner surface includes a measuring device arranged on the radially inner surface of the first layer. The measuring device includes, in the order indicated, a first electrical insulating layer, a sensor layer and a second electrical insulating layer. A sliding layer is arranged on the second electrical insulating layer.

A system and method of monitoring forces exerted at multiple locations on a mover includes multiple sensors, where each sensor is mounted at one of the locations. Each sensor detects an operating condition of the mover at the location on the mover at which it is mounted. The sensors may include accelerometers, strain gauges, or a combination thereof. Each strain gauge is mounted proximate to an area of interest on the mover. Each strain gauge generates a feedback signal corresponding to a deformation of the material measured at the location of the sensor. From the measured deformation of material, a force acting on the mover at the location of the sensor may be determined. The forces exerted at the different locations on the mover may be monitored in real time to determine bearing performance or monitored over a duration of time to observer changes in bearing performance over that duration.

This invention relates to a bearing monitoring method and system suitable for the monitoring of faults in rolling element bearings. The method and system utilize an acceleration sensor that is sensitive to both acceleration and housing strain and which has the effect of amplifying acceleration events that coincide with areas of the housing strain signal that correspond to bearing ball-pass events. The housing strain signal due to ball-pass events can be used to synchronise or otherwise modify the sampling of acceleration signals, or to determine bearing performance characteristics.

Disclosed is a device for estimating a load in a bearing, including a receiving unit for receiving a sensor signal waveform. The sensor signal waveform is provided by at least one sensor probe arranged at the bearing. The at least one sensor probe is configured to measure a displacement and/or strain of the bearing. The sensor signal waveform is a product of a carrier waveform and a load waveform, and an electronic control unit configured for processing the received measured sensor signal waveform, by determining a rolling element frequency from the measured sensor signal waveform, determining the carrier waveform based on the determined rolling element frequency and the measured sensor signal waveform, determining the load waveform based on determined carrier waveform and the measured sensor signal waveform, and estimating the load in the bearing from the determined load waveform.

An orientation device, an orientation system and an orientation method are provided. The orientation device includes a seat body, a pressure sensor, and a computing unit. The seat body includes a bearing surface, and the seat body is non-directional. The pressure sensor is disposed below the bearing surface. The pressure sensor is configured to obtain a plurality of pressure data of the bearing surface when an object is disposed on the bearing surface. The computing unit is coupled to the pressure sensor. The computing unit is configured to analyze the pressure data to obtain a direction data. The direction data is configured to determine a first direction of the seat body.

A torque sensing assembly of a differential of an axle assembly is described in the present disclosure. The differential may include a differential housing portion, a drive pinion positioned within the differential housing portion, a ring gear, a carrier, a differential pinion, a first side gear, a second side gear, a first bearing, a first bearing support, and the torque sensing assembly. The first bearing is coupled to the differential housing portion and rotatable with the carrier. The first bearing support is coupled to the differential housing portion and used to support the first bearing. The torque sensing assembly is coupled to the first bearing support and operable to measure a characteristic resulted from a separation force created between the drive pinion and ring gear.

A torque transmitter for a torque sensor for measuring a torque on a shaft includes a carrier plate that includes a plurality of sensor element carrier plate regions, on each of which at least one sensor element for recording magnetic field changes is arranged, and an enclosure region formed in a substantially annular shape to enclose the shaft around a circumference of the shaft. The plurality of sensor element carrier plate regions are perpendicularly connected to the enclosure region and arranged radially within the enclosure region by being spaced apart along a circumferential direction around the circumference of the shaft.

A bearing unit is provided with a strain element for torque detection. The strain element is provided with a first annular part attached to a rotation-side member, a second annular part attached to a load-side member, and a plurality of ribs serving as strained parts linking the first annular part and the second annular part together. One of an inner race and an outer race is integrally formed on the first annular part of the strain element. Deformation, which occurs in the ribs of the strain element due to torque exerted on the rotation-side member from the load-side member, is detected by a strain gauge, etc., and converted to torque. The strain element for torque detection can be incorporated into a motor, a reducer, or another rotary propulsion unit without the need for a dedicated installation space and without the need for fastening fittings, etc.

An assembly having a bearing with an axis of rotation, and a fibre-based sensor for sensing strain or temperature of the bearing is disclosed. The sensor extends in a direction parallel to the axis of rotation. An aircraft system is disclosed including a wheel supported on an axle by a first bearing and a second bearing. The system further includes a first fibre optic sensor for sensing a strain or temperature of the first bearing, a second fibre optic sensor for sensing a strain or temperature of the second bearing, and an interrogator to analyse optical signals from the sensors to determine differences in the strains or temperatures of the first bearing and the second bearing.