This invention concerns torque sensor systems and methods that computationally compensate in real-time for hysteresis in signals output from sense elements that are indicative of a torque, including a time-varying torque. In preferred embodiments, temperature effects can also be compensated for by such methods and systems.

This invention concerns torque sensor systems and methods that computationally compensate in real-time for hysteresis in signals output from sense elements that are indicative of a torque, including a time-varying torque. In preferred embodiments, temperature effects can also be compensated for by such methods and systems.

The present invention relates to a power transmission apparatus capable of measuring torque and a power generation apparatus using the same, and more particularly, to a power transmission apparatus capable of measuring torque and a power generation apparatus using the same which includes a disk-shaped outer body that receives power from the outside, an inner body that is coupled to the inside of the outer body, and at least one load cell formed between the outer body and the inner body.

A torque sensor (200) includes a sensor unit (222), a resilient body (213), and a detection unit (223). The sensor unit (222) detects, from an output unit that is a rotational body of an actuator, a rotational position in an annular first area positioned at a first distance from a rotation center, and a rotational position in an annular second area positioned at a second distance longer than the first distance from the rotation center. The resilient body (213) is provided between the first area and the second area. The detection unit (223) detects a torque applied to the output unit, on the basis of a result of the detection by the sensor unit (222).

An assembly for measuring torque and/or axial load for capping heads includes a containing body torque and/or load sensor housed within the body, and an interface that connects a capping head to the body. The interface is coupled to the torque/load sensor to transfer torque applied on the interface to the torque sensor and/or to transfer load applied on the interface to the load sensor. The interface has a first part fixedly constrained to the capping head such that the first part is brought into rotation and/or translation by the capping head, and a second part coupled to the torque sensor for transferring a torque thereto and/or to the load sensor for transferring a load thereto. The torque and/or load are applied by the first part to the second part and the first part transfers a torque to the second part in the absence of a reciprocal contact.

An assembly for measuring torque and/or axial load for capping heads includes a containing body torque and/or load sensor housed within the body, and an interface that connects a capping head to the body. The interface is coupled to the torque/load sensor to transfer torque applied on the interface to the torque sensor and/or to transfer load applied on the interface to the load sensor. The interface has a first part fixedly constrained to the capping head such that the first part is brought into rotation and/or translation by the capping head, and a second part coupled to the torque sensor for transferring a torque thereto and/or to the load sensor for transferring a load thereto. The torque and/or load are applied by the first part to the second part and the first part transfers a torque to the second part in the absence of a reciprocal contact.

Proposed is an elastic body having variable rigidity, wherein the elastic body is used in a series elastic actuator module, connects an input and an output, and has a rigidity that varies according to the applied torque. The elastic body having variable rigidity comprises: a connection part which receives torque from the input side or the output side; and a spring part connected to and receiving torque from the one selected from among the input side and the output side which is different from the connection part, wherein the spring part is formed integrally with the connection part and has a rigidity that varies as the connection part and the spring part come into contact with each other due to deformation caused by the applied torque.

A displacement detection device and a torque sensor include a movable part that is connected to a first member and to a second member and that changes a gap along with displacement of the second member with respect to the first member in a prescribed direction; and a detection part (detection circuit) that, on the basis of the change in the gap detects displacement of the second member with respect to the first member in the prescribed direction, wherein the movable part is configured to make the amount of N change in the gap greater than the amount of displacement of the second member with respect to the first member in the prescribed direction.

A displacement detection device and a torque sensor include a movable part that is connected to a first member and to a second member and that changes a gap along with displacement of the second member with respect to the first member in a prescribed direction; and a detection part (detection circuit) that, on the basis of the change in the gap detects displacement of the second member with respect to the first member in the prescribed direction, wherein the movable part is configured to make the amount of N change in the gap greater than the amount of displacement of the second member with respect to the first member in the prescribed direction.

A system and method of measuring torque generated by a drive train like that used in a rotating equipment drive. A drive motor is mounted to a rotatable brake assembly which, in turn, is coupled to a gear drive which, in turn, transmits rotational power. The brake assembly is coupled to a fixed cover of the gear drive by a gearbox torque sensor that prevents rotation between the brake assembly and the housing. The sensor can be a load cell or its equivalent. A control module may be configured to adjust operation of the rotating equipment drive in response to the torque signal. All input torque from the drive motor to the gearbox is measured when the brake is disengaged through the load cell. All input torque at the gearbox output shaft, through back-driving, is measured when the brake is engaged through the load cell.