A monitoring system includes a fastener. A sensor is coupled to the fastener. A circuit board is electrically coupled to the sensor. An antenna electrically coupled to the circuit board.

A method for acquiring a contact angle of an angular contact ball bearing includes: a first detection step of detecting a number of rotation of a first bearing ring of an angular contact ball bearing; a second detection step of externally detecting deformation of a second bearing ring associated with orbital rotation of a ball of the angular contact ball bearing; and a calculation step of obtaining a contact angle α of the ball using a detection result of the first detection step, a detection result of the second detection step, and specification data pertaining to the ball.

An actuator according to an embodiment includes a first rotating body that is rotatable around an input axis and includes a first groove part extending in a first direction, a second rotating body that is rotatable around an output axis and includes a second protruding part extending in a second direction substantially perpendicular to the first direction, a strain body that includes a first protruding part capable of being engaged with a first groove part through a gap whose direction is vertical to that of the input axis and a second groove part capable of being engaged with a second protruding part through a gap whose direction is vertical to that of the output axis and transmits a rotational torque of the input axis to the output axis, and a detection element that is attached to the strain body.

A method for estimating a bearing load in a bearing having a first ring, a second ring and a row of rolling elements arranged between the first ring and the second ring, the method including: equipping the first ring with at least one strain sensor probe, transmitting a strain signal waveform from the at least one strain sensor probe to an electronic control unit, extracting shape information of the waveform of the strain signal using a first harmonic component (u) and a second harmonic component (v) of the strain signal, and calculating a bearing load estimation as a polynomial function of the first and second harmonic components (u, v) of the strain signal.

A thrust bearing for a vehicle includes an upper case that abuts against a vehicle body-side attaching portion and a lower case on which the upper case is provided so that the lower case is rotatable with respect to the upper case about an axial center AX of a piston rod used in a shock absorber of a suspension of the vehicle, characterized in that the thrust bearing further includes a load sensor for measuring a load vertically acting on the suspension.

A generator, in particular of a wind power installation, for generating electric current, comprising a rotor and a stator having stator teeth and grooves arranged between said stator teeth for receiving at least one stator winding, wherein a measuring device is provided to determine the deflection of at least one stator tooth of the stator in connection with the generator, wherein the measuring device is connected to at least one measuring unit, which is embodied as a strain gauge.

In a vehicle suspension assembly a sensorized system applied to a wheel hub unit, in which radially outer cylindrical surface of an outer ring of the wheel hub unit configured for coupling to a suspension upright or knuckle has four circumferential flats formed to be angularly spaced from each other on the radially outer lateral cylindrical surface, each flat delimiting a plane surface which extends axially over a pair of annular tracks for rolling bodies of the outer ring; each flat carries integrally a sensor module including a pair of extensometers positioned parallel to each other and each at the position of a respective annular track, orientated in a circumferential direction so as to extend along a circumferential development of the annular track; an electrical circuit picks up a signal from each sensor module and sends it to a data socket carried by the suspension upright or knuckle.

A medical manipulator is provided with: a drive unit provided with a motor; a removable portion that is removably attached to the drive unit and that is provided with a rotating body to be connected to a rotating shaft of the motor; an elongated insertion portion coupled to the removable portion; a distal-end movable part disposed at a distal end of the insertion portion; a wire connecting the rotating body and the distal-end movable part and transferring tension generated by power of the motor to the distal-end movable part to actuate the distal-end movable part; a pressing member that is formed of an elastic material and that presses a longitudinal intermediate position of the wire in the wire diameter direction; and a sensor that is attached to the pressing member and that detects an elastic deformation amount caused in the pressing member according to the tension of the wire.

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.

The invention relates to a strain gage and methods for making and using the same to measure strain of a surface of interest. In particular, the invention relates to a semiconductor strain gage held by a metal body using a ceramic interface between the gage and the body, which that can be attached to a surface of interest. The invention also relates to methods for making the ceramic interface and attaching the semiconductor strain gage to a surface of interest. The invention, including its various embodiments, also relates to using the semiconductor strain gage to measure strain at temperatures above 1000° F.