Abstract: A servomotor (20) is driven to move a machine (10) with a ball screw (30). A first sensor (50) detects presence of the machine (10) at a first reference position (P) being predefined. A controller (60) stores a state of the servomotor (20) detected by an encoder (40) as reference state information upon detection of the machine (10) by the first sensor (50). The controller (60) estimates a position of the machine (10) based on the state of the servomotor (20) detected by the encoder (40) and the reference state information.

Abstract: The invention comprises a method of: providing an inductor core, placing a winding guide within an inch of the inductor core, positioning a first turn element with the winding guide, positioning a second turn element with the winding guide, and mechanically coupling the first turn element to the second turn element to form at least a part of a winding, the winding forming a wrapped shape about the inductor core. Optionally and preferably, turn elements are subsequently joined, mechanically coupled, and/or welded together to form sections of the winding.

Abstract: A transmission actuator for a vehicle includes a housing, a first rocker for engaging a toothed wheel, a second rocker for rotating the first rocker to engage the toothed wheel, an engagement rod for rotating the second rocker, a solenoid arranged to displace the engagement rod, and a solenoid control circuit. The solenoid includes an iron core, a wire coil wrapped around the iron core, and a ferromagnetic plunger. The plunger is arranged to linearly displace in a first direction when a first directional current is applied to the wire coil, and linearly displace in a second direction when a second directional current is applied to the wire coil. The solenoid control circuit is arranged supply the first directional current when energized by a power source, and supply a decaying alternating current that includes the first directional current and the second directional current when the solenoid control circuit is de-energized.

Abstract: An electrified vehicle includes a traction battery, an inverter coupled to the traction battery via positive and negative legs of a high voltage bus and operable to convert DC power from the traction battery to three-phase AC power, a capacitor connected across the positive and negative legs of the high voltage bus, an electric machine having three phases coupled to the inverter, and a controller programmed to control electric machine voltage toward zero at a first slew rate or control electric machine current to a target short circuit current at a second slew rate in response to an active short request signal and to control the inverter to actively short the three phases of the electric machine after either (a) a specified elapsed time, or (b) after the electric machine voltage is below a first threshold or the current is within a predetermined range of the target short circuit current.

Abstract: An electrical ride-through (ERT) unit is configured to apply a voltage to a drive circuit during disruptions of line voltage to the drive circuit. The ERT unit includes a capacitor on an ERT circuit that is prevented from applying the voltage to the drive circuit during normal operation of the drive circuit and applies the voltage to the drive circuit during a voltage drop on the drive circuit.

Abstract: A multi-mover direct drive transmission system, including: stator unit formed by stator segments and includes frame and coil windings; mover units movable relative to the stator unit and each includes mover slidably connected to the stator unit and movable relative to the frame, and magnet fixed to the mover; and actuators. The magnet is arranged opposite to and spaced from the coil winding, and the coil winding drives the magnet to drive the mover. The frame includes feedback segments and transition segments. The stator unit further includes hall elements. The hall element outputs a hall signal according to a magnetic field variation detected. The actuator calculates an electrical angle and calculates a drive current, the coil winding drives the magnet to move to realize position correction. The multi-mover direct drive transmission system has a simple structure, a small number of components, and is simple and easy-to-implement the motion control method.

Abstract: A motor controller for an electric motor is provided. The motor controller includes a voltage limiting circuit configured to be coupled to an alternating current (AC) source and is configured to limit a voltage at an output node of the AC source, a filter configured to be coupled to the AC source and is configured to produce a filtered line frequency AC signal, a rectifier coupled to the filter and configured to produce a direct current (DC) signal from the filtered line frequency AC signal, an inverter coupled to the rectifier and configured to produce an AC signal on an input node of the electric motor, and a line contactor coupled between the AC source and the input node of the electric motor and configured to supply the input node of the electric motor directly from the AC source to energize stator windings therewith when the inverter is disabled.

Abstract: A system, an electrical combination and a method for powering a load device. The combination may include a burst circuit configured to provide power to the load device to perform a burst operation, the burst circuit including a supercapacitor, a first switch between a power source and the supercapacitor and operable to control whether power is provided from the power source to charge the supercapacitor, and a second switch between the supercapacitor and the load device and operable to control whether power is provided from the supercapacitor to the load device; and an electronic processor configured to control the first switch and the second switch based at least in part on a voltage of the supercapacitor.

Abstract: A control console for a powered surgical tool. The console includes a transformer that supplies the drive signal to the surgical tool. A linear amplifier with active resistors selectively ties the ends of the transformer primary winding between ground and the open circuit state. Feedback voltages from the transformer windings regulate the resistances of the active resistors.

Abstract: A power tool communication system including an external device including a first controller configured to transmit, via wireless communication to a power tool, configuration data including a work light duration parameter value and a work light brightness parameter value. The power tool includes a housing, a brushless direct current (DC) motor, a trigger, a work light, a wireless communication circuit configured to wirelessly communicate with the external device to receive the configuration data, and a second controller configured to control a work light duration of the work light based on the work light duration parameter value, and control a work light brightness of the work light based on the work light brightness parameter value.

Abstract: Of the moving directions of the piston, the direction in which high-pressure air is delivered is a delivery direction, and the direction in the opposite direction from the delivery direction is a force accumulation direction. The piston is moved in the force accumulation direction by the moving mechanism, and moved in the delivery direction by the biasing force of the biasing spring in response to the release of the moving force exerted by the moving mechanism. The cylinder is provided with: a piston supporting portion that supports the piston; and a connection protrusion that has a delivery path for delivering the high-pressure air to the nozzle. The inner surface of an end of the piston supporting portion in the delivery direction is formed as a closed surface. The delivery path is located further toward the force accumulation direction than the closed surface is.

Abstract: An actuator includes a housing, a moving element and two springs connected between the housing and the moving element such that one of the two springs crosses the other of the two rotor springs without contacting the other of the two springs. A drive component causes the moving element to move.

Abstract: A method of verifying torque measurements of a reaction torque transducer of an instrument drive unit includes a controller receiving a verification signal, generating an acceptable range of torques, receiving a torque signal, comparing the torque signal to the acceptable range of torques, and stopping a motor if the torque applied by the motor is outside of the acceptable range of torques. The verification signal is indicative of the current drawn by the motor and the torque signal is indicative of torque applied by the motor.

Abstract: The invention comprises an apparatus, comprising an inductor, the inductor comprising: an inductor core; a first winding section comprising a first cast shape and a second winding section comprising the first cast shape, the first winding section mechanically joined to the second winding section to form a winding, the winding forming a wound shape about the inductor core. Optionally and preferably, a third winding section, comprising a second cast shape, mechanically joins the first winding section to the second winding section and a mechanical connector and/or an aluminum weld join the first winding section to the third winding section.

Abstract: An energy storage system includes a crane and a plurality of blocks, where the crane is operable to move blocks from a lower elevation to a higher elevation (via stacking of the blocks) to store electrical energy as potential energy of the blocks, and then operable to move blocks from a higher elevation to a lower elevation (via unstacking of the blocks) to generate electricity based on the kinetic energy of the block when lowered (e.g., by gravity). The energy storage system can, for example, store electricity generated from solar power as potential energy in the stacked blocks during daytime hours when solar power is available, and can convert the potential energy in the stacked blocks into electricity during nighttime hours when solar energy is not available, and deliver the converted electricity to the power grid.

Abstract: A trailer vehicle unit for a towing vehicle, the trailer vehicle unit having a coupling configured to couple to the towing vehicle and an electrical energy dissipating system at least partly disposed in a fluid medium conduit for receiving fluid medium, the electrical energy dissipating system being configured to receive electric energy and to dissipate received electric energy by utilizing a flow of fluid medium, wherein the trailer vehicle unit further comprises a slave control unit having a processing circuitry configured to receive a signal from the towing vehicle indicative of a request for dissipating energy the electrical energy dissipating system.

Abstract: The invention comprises an apparatus, comprising: an inductor, comprising: an inductor core and a winding comprising a wound shape around the inductor core, where the winding comprises a first cross-sectional area at a first longitudinal position along the winding and a second cross-sectional area at a second longitudinal position along the winding, the second cross-sectional area at least twenty percent larger than the first cross-sectional area. Optionally and preferably, the winding includes a first set of cast elements sharing a first geometric shape and a second set of cast elements sharing a second geometric shape, where the alternating members of the first set of cast elements and the second set of cast elements are welded together to form the winding.

Abstract: Rolling device comprising a housing (11) accommodating a rolling element and a control and communication module comprising a wireless receiver (30) connected to a control device (40) and position means (50) connected to the control device, wherein the rolling device further comprises driving means (60) connected to the control device and the rolling element for driving and controlling the movements of the rolling element according to a first position acquired by the position means and a received wireless signal comprising movement instructions and a second position, power supply means (70) for powering the control and communication module and the driving means, wherein the housing is arranged with an support assembly for bearing the rolling element which is configured for establishing a releasable connection with the housing, and an electrical interface adapted for establishing connection between the rolling element and the control and communication module and the power supply means.

Abstract: A method for actuating an electric motor with a motor control signal with an application-specific frequency, which signal is provided by an electronic motor control unit, wherein the electric motor is used in a vehicle roof for activating a component of this roof while being connected to a region of the roof. Embodiments provide that the electric motor can be actuated by the motor control unit with an additional signal whose frequency and amplitude are suitable for causing the region of the vehicle roof to which said electric motor is connected to oscillate in order to generate sound.

Abstract: A method for controlling heating of a motor and a related controller are provided. The method includes: obtaining a heating target temperature value; determining, based on the heating target temperature value, a heating motor that needs to generate heat from a plurality of motors of a multi-motor drive system and heat generation power of the heating motor; and sending a first control instruction to the heating motor. The first control instruction is used to respectively input harmonic currents to three phases of windings of the motor, so that the heating motor generates heat based on the heat generation power. According to the application, the heating target temperature value is obtained, and the quantity of heating motors can be flexibly controlled to generate sufficient heat generation power.