A rolling bearing includes an outer ring having a predetermined rotation axis; an inner ring disposed coaxially with the outer ring and situated on an inner peripheral side of the outer ring; multiple rolling elements disposed between the outer ring and the inner ring; and a strain gauge disposed on an outer peripheral surface of the outer ring or an inner peripheral surface of the inner ring. The strain gauge includes three or more detector elements that are disposed on the outer peripheral surface of the outer ring or the inner peripheral surface of the inner ring, and the three or more detector elements include at least two detector elements at different locations in a circumferential direction of the outer ring or the inner ring, the at least two detector elements being situated at different locations in a direction of the rotation axis.

A foot presence sensor system for an active article of footwear can include a sensor housing configured to be disposed at or in an insole of the article, and a controller circuit, disposed within the sensor housing, configured to trigger one or more automated functions of the footwear based on a foot presence indication. In an example, the sensor system includes a capacitive sensor configured to sense changes in a capacitance signal in response to proximity of a body. A dielectric member can be provided between the capacitive sensor and the body to enhance an output signal from the sensor.

In a method for monitoring a state of a safety bearing of a rotor shaft of a machine, with the rotor shaft being supported by a magnetic bearing and the safety bearing having an outer ring and an inner ring arranged for rotation with respect to the outer ring, the rotor shaft of the machine is caught with the safety bearing when the magnetic bearing of the machine fails. The magnetic bearing is witched off for monitoring the state of the safety bearing. The rotor shaft is rotated with the machine under control of a higher-ranking controller by using a defined motion sequence, and a physical variable of the safety bearing is measured with a sensor.

A kit including a plurality of modules which can be integrated in a bearing installation space is disclosed. The modules include a plurality of supply management modules for supplying bearing components, a plurality of functional modules for measuring bearing state variables and/or for triggering and/or activating specified events under specified conditions, and a plurality of infrastructure modules for implementing communication tasks and/or for saving and processing specified and/or recorded data. A bearing arrangement having a bearing and a plurality of modules which can be connected to a common connection medium is also disclosed, wherein the modules are components of the kit.

Provided is a torque sensor that includes: a bearing that is provided with an inner ring and an outer ring that are supported so as to be relatively movable only in the direction of rotation about a predetermined axis; a connecting member that is provided with fixing sections that are respectively fixed to the inner ring and the outer ring and a strain generation section that connects between the fixing sections; and a strain sensor that is disposed on the connecting member so as to be capable of detecting a strain at least in the circumferential direction.

A method for determining a mass of an implement attached to a vehicle includes providing a powerlift having at least one upper link and one lower link, a support structure, and the implement. The method also includes defining an angle () between the upper link and a vehicle horizontal line, an angle () between the lower link and a vehicle horizontal line, an angle of inclination () of a vehicle horizontal line relative to a terrestrial horizontal line, a path (AK) that represents a connection along the lower link between the support structure and the implement, and a force (F.sub.E) impinging on a connection between the upper link and the implement and acting along the upper link. The mass is determined as a function of at least one of the angle (), the angle (), the angle of inclination (), the path (AK), and the force (F.sub.E).

Systems and a method for measuring at least one mechanical force in a stator of an electrical machine are provided. The stator of the electrical machine includes a multiple stacked metal lamina. At least one fiber Bragg grating (FBG) element is placed between two of the lamina, such as in a rotor-facing tooth of the lamina.

A test bench for measuring forces and torques of rotatably mounted bodies in charging devices. The test bench has a rotatably mounted body of a charging device, a measuring component, and a bearing component for mounting the measuring component. The bearing component is configured in such a way that the measuring component is frictionlessly mounted in the bearing component.

A flywheel energy storage system comprises a rotor having a rotational axis about which the rotor spins in operation and comprising a ferrous material and a housing enclosing the rotor and having an interior subject to a vacuum. The system further comprises a vacuum pump configured to provide the vacuum of the interior of the housing, an electromagnet configured to apply a magnetic field and lift the rotor vertically along the rotational axis of the rotor, and at least one bearing provided between the rotor and the housing, and a controller in operative communication with the electromagnet and the vacuum pump. The rotor applies a force against the at least one bearing.

Disclosed are a spherical steel bearing, an intelligent bearing and a bearing monitoring system, belonging to the technical field of bearings. The spherical steel bearing comprises a top bearing plate, a bottom bearing plate, a spherical steel plate and a base plate, wherein the base plate are stacked together with the top bearing plate or the bottom bearing plate. A pressure sensing unit is arranged between the top bearing plate and the base plate or between the bottom bearing plate and the base plate. The intelligent bearing includes a data acquisition unit, a data output unit and the spherical steel bearing, the data acquisition unit transmitting the bearing pressure measured by the pressure sensing unit to the data output unit. The bearing monitoring system includes a data acquisition unit, a data output unit, a monitoring center and the spherical steel bearing.