An embodiment relates to a sensing device comprising: a rotor; and a stator arranged on the outer side of the rotor, wherein the stator comprises a stator holder and a stator ring arranged on the stator holder; the stator ring comprises a body, a plurality of teeth formed to protrude from the inner peripheral surface of the body, and a protrusion part formed to protrude from the outer peripheral surface of the body; and, when seen in the radial direction, the protrusion part is arranged between the teeth and comprises at least two protrusions arranged to be spaced from each other. Accordingly, the coupling force between the stator holder and the stator ring can be improved.

The system and method of the invention pertains to an axial flux stator is implemented to replace the drive-end magnets and the drive motor. The axial flux stator comprises a control circuit to control the voltage and current provided to the stator, to measure the torque and speed of rotation, and to measure the magnetic flux and magnetic flux density produced by the axial flux stator and impeller magnets, individually or in combination. The axial flux stator comprises a plurality of current carrying elements to produce magnetic flux in an axial direction and drive the impeller.

The system and method of the invention pertains to an axial flux stator is implemented to replace the drive-end magnets and the drive motor. The axial flux stator comprises a control circuit to control the voltage and current provided to the stator, to measure the torque and speed of rotation, and to measure the magnetic flux and magnetic flux density produced by the axial flux stator and impeller magnets, individually or in combination. The axial flux stator comprises a plurality of current carrying elements to produce magnetic flux in an axial direction and drive the impeller.

A motor according to the present invention includes an output axis, a brake for holding the output axis, a sensor for detecting an external torque applied to the output axis from outside, and a controller for decreasing or increasing the torque of the brake during operation of the brake in accordance with an increase or decrease in the external torque detected by the sensor.

A motor according to the present invention includes an output axis, a brake for holding the output axis, a sensor for detecting an external torque applied to the output axis from outside, and a controller for decreasing or increasing the torque of the brake during operation of the brake in accordance with an increase or decrease in the external torque detected by the sensor.

An object of the present invention is to reduce an inductance of a power circuit, reduce a switching loss and a noise level and improve a voltage-use ratio of a battery power in a redundant-type electronic control device.

An electronic control device that controls a motor has power modules 11a, 11b to drive the motor. Power terminals 32pua, 32pva and 32pwa of the power module 11a are arranged in positions that are close to and face power terminals 32nub, 32nvb and 32nwb of the power module 11b, which are opposite to the power terminals 32pua, 32pva and 32pwa of the power module 11a in polarity. Power terminals 32nua, 32nva and 32nwa drawn from a longitudinal end portion 311 of the power module 11a are arranged in positions that are close to and face power terminals 32pub, 32pvb and 32pwb drawn from a longitudinal end portion 311 of the power module 11b which are opposite to the power terminals 32nua, 32nva and 32nwa of the power module 11a in polarity.

An object of the present invention is to reduce an inductance of a power circuit, reduce a switching loss and a noise level and improve a voltage-use ratio of a battery power in a redundant-type electronic control device.

An electronic control device that controls a motor has power modules 11a, 11b to drive the motor. Power terminals 32pua, 32pva and 32pwa of the power module 11a are arranged in positions that are close to and face power terminals 32nub, 32nvb and 32nwb of the power module 11b, which are opposite to the power terminals 32pua, 32pva and 32pwa of the power module 11a in polarity. Power terminals 32nua, 32nva and 32nwa drawn from a longitudinal end portion 311 of the power module 11a are arranged in positions that are close to and face power terminals 32pub, 32pvb and 32pwb drawn from a longitudinal end portion 311 of the power module 11b which are opposite to the power terminals 32nua, 32nva and 32nwa of the power module 11a in polarity.

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.

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.

A sensor device, such as a torque sensor, of a motor control device or an electric power steering apparatus includes a sensor section that detects a quantity of state of a detection subject and outputs a detection signal corresponding to the detected quantity of state. When receiving a specific trigger transmitted from an external device, the sensor section outputs an abnormality diagnosis signal, which is configured by a predetermined waveform and used for determining whether there is an output abnormality of the sensor section, and then outputs the detection signal.