Abstract: There is provided a method of controlling an electric motor having a rotor and a stator. The method includes controlling the motor in a low-speed mode by injecting a high frequency (HF) signal into the motor. The HF signal may have an initial voltage and an initial frequency. The method may also include obtaining a speed of the rotor relative to the stator, and obtaining a reference input being sent to the motor. Moreover, the method may include comparing the speed and the reference input with a speed threshold and a reference input threshold respectively. In addition, the method may include reducing at least one of the initial voltage and the initial frequency if the speed is below the speed threshold and the reference input is below the reference input threshold, to reduce an acoustic noise caused by injecting the HF signal into the electric motor.

Abstract: There is provided a method of controlling an electric vehicle. The method includes obtaining by a controller of the electric vehicle a first state indicator of a state of the electric vehicle, receiving at the controller a status indicator of an operating status of the electric vehicle, and updating by the controller the state of the electric vehicle based on the status indicator to an updated state. The updated state may be associated with a second state indicator. The method also includes determining by the controller a given braking type of a braking to be applied to the electric vehicle. This determining may be based on one or more of the second state indicator and the status indicator. The method also includes applying to the electric vehicle the braking of the given braking type. Systems for applying such braking are also provided.

Abstract: A magnetic bearing system for controlling magnetic coupling between a mobile carriage and a guideway. The magnetic bearing system includes at least two engines successively arranged in a travel direction, wherein each of the at least two engines comprises at least two poles. The at least two engines have centerlines in the travel direction that are fixedly offset from each other, and the at least two engines are configured to be magnetically coupled to the guideway through air gaps.

Abstract: There is provided a method of operating an electric device. The method includes receiving one or more operating power levels being used by one or more loads on a given circuit of the electric device, and setting a power threshold based on the one or more operating power levels. The method also includes receiving an output power level being delivered to the given circuit by a power source connected to the given circuit, and comparing the output power level with the power threshold. Furthermore, the method includes, if the output power level exceeds the power threshold, reducing the output power level to less than or equal to the power threshold. A related power regulator is also provided.

Abstract: There is provided a device to be used as a magnet. The device comprises a first member, a second member, and a third member. The first member defines a trench extending along a longitudinal direction. The trench has a top being open. Moreover, the first member comprises a first material being magnetizable. The second member is received in the trench and secured to the first member. The second member comprises a second material being magnetizable. Furthermore, the third member is received in the trench and secured to the first member. The third member comprises a third material being magnetizable. The third member and the second member are disposed side-by-side along the longitudinal direction.

Abstract: A magnetic bearing system for controlling magnetic coupling between a mobile carriage and a guideway and a method for controlling the magnetic bearing system. The magnetic bearing system includes at least one engine, which includes at least two poles, at least one permanent magnet and at least one coil. The engine is configured to be magnetically coupled to the guideway through at least one air gap.

Abstract: There are provided electric motors each having a rotor, a stator, and a plurality of conductive windings each disposed around a corresponding tooth of the stator. The rotor is to rotate about an axis of rotation defining an axial direction. The rotor includes a backiron and a plurality of magnets secured to an inner surface of the backiron. The stator is disposed inside the rotor and centered about the axis of rotation. The stator includes a plurality of teeth each extending radially relative to the axis of rotation towards the inner surface of the backiron and terminating in a corresponding tooth end disposed proximal to the inner surface.

Abstract: There is provided a method of controlling an electric motor having a rotor and a stator. The method includes controlling the motor in a low-speed mode by injecting a high frequency (HF) signal into the motor. The HF signal may have an initial voltage and an initial frequency. The method may also include obtaining a speed of the rotor relative to the stator, and obtaining a reference input being sent to the motor. Moreover, the method may include comparing the speed and the reference input with a speed threshold and a reference input threshold respectively. In addition, the method may include reducing at least one of the initial voltage and the initial frequency if the speed is below the speed threshold and the reference input is below the reference input threshold, to reduce an acoustic noise caused by injecting the HF signal into the electric motor.

Abstract: Example vehicles with functional implements are provided. An example vehicle includes a driving assembly to propel the vehicle at a vehicle speed, a functional implement assembly to actuate a functional implement at a functional implement speed, a vehicle speed sensor to monitor the vehicle speed, and a controller to control the functional implement assembly to vary the functional implement speed proportionally to the vehicle speed. Another example vehicle includes a driving assembly to propel the vehicle at a vehicle speed, a functional implement assembly to actuate a functional implement at a functional implement speed, a functional implement load sensor to monitor a load delivered to the functional implement, and a controller to control the driving assembly to vary the vehicle speed proportionally to the functional implement load.

Abstract: There is provided a method for actuating a component of a vehicle. The method may include applying an initial force to the component to actuate the component, and generating a movement indicator based on whether the component moves in response to the initial force. Moreover, the method may include receiving a freezing indicator associated with a likelihood of the component being immobilized due to freezing. If the movement indicator is negative and the freezing indicator is affirmative, the method also includes applying an adjusted force to the component to mobilize the component.

Abstract: There is provided a method for controlling an electric vehicle. The method includes receiving a regenerative braking activation indicator. If the regenerative braking activation indicator is affirmative, the method includes applying regenerative braking at an initial level to an electric motor of the electric vehicle. The method also includes obtaining a vehicle motion parameter of the electric vehicle measured when the regenerative braking is being applied. In addition, the method includes changing the regenerative braking to a modified level based on the vehicle motion parameter.

Abstract: There is provided a method comprising receiving at a controller an input comprising a channel output from an input channel of a vehicle. The input is triggered by an operation of the vehicle by an operator. The input channel has a corresponding direct operational manifestation. The method also comprises comparing at the controller the input with a set of input patterns to select from the set of input patterns a target input pattern corresponding to the input, and generating at the controller a control output corresponding to the target input pattern. The control output is configured to cause in the vehicle a target operational manifestation different than the direct operational manifestation. Furthermore, the method comprises sending the control output from the controller to the vehicle.

Abstract: There is provided a device to be used as a magnet. The device comprises a first member, a second member, and a third member. The first member defines a trench extending along a longitudinal direction. The trench has a top being open. Moreover, the first member comprises a first material being magnetizable. The second member is received in the trench and secured to the first member. The second member comprises a second material being magnetizable. Furthermore, the third member is received in the trench and secured to the first member. The third member comprises a third material being magnetizable. The third member and the second member are disposed side-by-side along the longitudinal direction.

Abstract: Provided is an electric motor comprising: a stator comprising stator poles arranged radially and a rotor comprising rotor poles, each comprising: a substrate comprising a magnetically permeable material and at least a first magnet and a second magnet. The magnets can comprise a respective proximal end proximal to the stator and a respective distal end opposite the respective proximal end, and distal from the stator. A distance between respective proximal ends of the magnets can be equal to or greater than a distance between respective distal ends of the magnets. Each rotor pole also comprise first and second proximal cavities, each cavity extending from the respective proximal end of a magnet for a given length along about the circumferential direction and away from the proximal end of the other magnet. Sum of the lengths of the proximal cavities can be about equal to a width of each stator pole.

Abstract: To reduce stray magnetic fields and the accompanying inefficiency in electric motors, the present specification provides a motor having a plurality of stator poles and rotor poles. The rotor poles are configured to rotate across the stator poles. Each of the rotor poles has a first rotor pole component and a second rotor pole component disposed on opposite sides of the plurality of stator poles. Each of the stator poles comprises at least a first sub-pole and a second sub-pole arranged such that at least a portion of magnetic flux from the first sub-pole flows through the first rotor pole component, through the second sub-pole, through the second rotor pole component and back through the first subpole. As the rotor poles rotate with respect to the stator poles, the magnetic flux exerts a rotating force on the plurality of rotor poles.

Abstract: A control rod drive replacement device includes a channel for mounting on a support under a nuclear reactor pressure vessel and a control rod drive extractor removably received in the channel. The control rod drive extractor includes a base and a housing pivotably connected to the base. The housing is configured for receiving a control rod drive. The base includes a base axis. The housing is pivotably attached to the base at the base axis for pivoting between a horizontal orientation in which the housing is aligned within the channel and a vertical orientation in which the housing is aligned for receiving the control rod drive from the nuclear reactor pressure vessel. The housing is vertically movable with respect to the base in the vertical orientation.

Abstract: A magnetic bearing system for controlling magnetic coupling between a mobile carriage and a guideway and a method for controlling the magnetic bearing system. The magnetic bearing system includes at least one engine, which includes at least two poles, at least one permanent magnet and at least one coil. The engine is configured to be magnetically coupled to the guideway through at least one air gap.

Abstract: Systems and methods for management of scalable storage architectures are disclosed. The system includes one or more storage backplanes, each storage backplane configured to interface with one or more hard disk drives. The system includes a baseboard management controller, which includes an interface to communicate with one or more of the storage backplanes and programmable logic configured to detect the presence of one or more hard disk drives in an interfaced storage backplane and control one or more status indicators, wherein each status indicator is related to at least one of the hard disk drives in the interfaced storage backplane.

Abstract: A control rod drive replacement device is provided.

Abstract: Provided is an electric motor comprising: a stator comprising stator poles arranged radially and a rotor comprising rotor poles, each comprising: a substrate comprising a magnetically permeable material and at least a first magnet and a second magnet. The magnets can comprise a respective proximal end proximal to the stator and a respective distal end opposite the respective proximal end, and distal from the stator. A distance between respective proximal ends of the magnets can be equal to or greater than a distance between respective distal ends of the magnets. Each rotor pole also comprise first and second proximal cavities, each cavity extending from the respective proximal end of a magnet for a given length along about the circumferential direction and away from the proximal end of the other magnet. Sum of the lengths of the proximal cavities can be about equal to a width of each stator pole.