Abstract: A method for delivering restricted items to users includes detecting that a user has selected a restricted item for delivery. A user profile is accessed, and authorization for delivery of the restricted item associated with the user profile is verified. Upon detecting a first authorization associated with the user profile, authorizing the dispatch of the restricted item to the user at a delivery location. The restricted item is transported to the delivery location by the mobile robot. The mobile robot has an item space with a lid and an electronic lock, which is locked during transit. A second authorization to confirm a user's identity before the user receives the restricted item. If the second authorization fails, communication is established between the user and a remote operator terminal via the mobile robot, and the remote operator terminal performs the second authorization and/or repeats the first authorization.

Abstract: A method that is executed by an information processing device includes acquiring first information regarding a vehicle, acquiring second information regarding a first product selected by a user, deciding a procedure for loading the first product into the vehicle based on the first information and the second information, and performing notification of the procedure for loading the first product.

Abstract: An integrated circuit including a power supply including an AC input, an AC to DC rectifier, a DC output of the rectifier, a switch for shunting the AC input, and a controller including a first connection to the DC output, a second connection to the AC input, wherein the controller is configured to monitor the DC output, determine if the DC output is within a first threshold of a desired output, monitor instantaneous AC voltage across the AC input, determine if an absolute difference of the AC input from zero voltage is less than a second threshold, and if the DC output is within the first threshold and the absolute difference of the instantaneous AC input from zero voltage is less than the second threshold, then provide a command to the switch to shunt the AC input. Related apparatus and methods are also described.

Abstract: A boost converter includes a voltage divider circuit, a first comparator, a tunable inductive element, a power switch element, a second comparator, an output stage circuit, and a controller. The voltage divider circuit receives an input voltage. The tunable inductive element is coupled to the voltage divider circuit. The total inductance of the tunable inductive element is controlled by the first comparator. The output stage circuit is coupled to the tunable inductive element and the power switch element. The output stage circuit includes a tunable resistive element. The total resistance of the tunable resistive element is controlled by the second comparator. When the boost converter operates in a first mode, an output voltage of the output stage circuit has a relatively high voltage level. When the boost converter operates in a second mode, the output voltage of the output stage circuit has a relatively low voltage level.

Abstract: Each permanent magnet module for a permanent magnet rotor includes a base-plate and a permanent magnet element attached to the base-plate. The base-plate includes a bottom section and an upper section between the bottom section and the permanent magnet element. The permanent magnet modules constitute subsets so that permanent magnet modules of different subsets differ from each other by positions of the upper sections of the base-plates with respect to the bottom sections of the base-plates so that the permanent magnet elements of the permanent magnet modules of the different subsets are axially successive and circumferentially shifted when the bottom sections of these permanent magnet modules are axially successive and circumferentially aligned. Thus, the permanent magnet elements of the permanent magnet modules can be arranged into, for example, skewed rows on a surface of the rotor.

Abstract: A method includes driving a first transistor to conduct a first current into an inductor when conductive and driving a second transistor to conduct a second current into the inductor when conductive. A first sense current is generated in response to the first current and a copy of the second current. A second sense current is generated in response to the second current and a copy of the first current. The first sense current is adjusted in response to the copy of the second current when the first transistor is nonconductive. The second sense current is adjusted in response to the copy of the first current when the second transistor is nonconductive. On times of the first and second transistors are controlled in response to a sum of the first and second sense currents.

Abstract: A switching regulator has a voltage reduction module, a first acquisition module, a second acquisition module, a third acquisition module, a comparison module and a pulse width modulation module, wherein the comparison module compares a superposed signal of a flat-wave signal or a ramp signal and a feedback signal with an acquisition signal, and outputs a comparison signal; the second acquisition module outputs the ramp signal when the acquired output signal is greater than a preset value, otherwise outputs the flat-wave signal; or when the working current obtained from the main circuit is greater than a preset value, a ratio of the feedback signal output from the third acquisition module to the working current of the main circuit is 1, otherwise the ratio is less than 1. The switching regulator has the advantages of excellent transient response, quick response, and high reliability.

Abstract: A tubular linear switched reluctance machine includes a segmented translator having a non-magnetic material body and ring segments of magnetic material axially separated from each other and provided on the body. The ring segments are distributed along the axial direction of the body. The machine also includes a stator arranged to electromagnetically interact with the segmented translator, wherein the stator has a plurality of coaxially arranged annular modules, and a respective annular non-magnetic spacer arranged between each pair of subsequently arranged modules.

Abstract: A power conversion device comprises: a DC link capacitor charged with a DC power supplied from a power supply part; a fuse part, for breaking a current which is output from or supplied to the power supply part and has a first breaking magnitude or greater; a relay part which comprises a first relay for connecting a positive terminal of the fuse part to a positive terminal of the DC link capacitor and a second relay for connecting a negative terminal of the fuse part to a negative terminal of the DC link capacitor; an initial charge part, for charging the DC link capacitor by using DC power supplied from the power supply part; and a power conversion part for converting the direct-current power supplied from the power supply part into AC power when the DC link capacitor has been charged and supplying the alternating-current power to a load terminal.

Abstract: An electric water pump of which productivity, maintainability, and use convenience may be improved by simplifying a production process through a change in a structure, and a method of manufacturing the same. The electric water pump includes: a pump housing accepting a motor therein; an acceptor having a cylindrical shape of which one side is opened and formed at one side of the pump housing; a control substrate installed in the acceptor; an external terminal formed of a conductor and penetrating through the acceptor to electrically connect the control substrate to an external power supply; and an internal terminal formed of a conductor and penetrating through the pump housing and the acceptor to electrically connect the motor and the control substrate to each other.

Abstract: A system may include a switch, a multiple stage voltage converter, and a regulation circuit. The switch may generate a pre-regulation signal based on an input signal. The multiple stage voltage converter may generate an output signal based on the input signal using a clock. The regulation circuit may generate a regulation signal based on the output signal and may generate a clock reference based on at least one of the pre-regulation signal and the regulation signal. The regulation circuit may generate the clock based on at least one of the pre-regulation signal, the regulation signal, and the clock reference and determine whether a voltage level of the regulation signal is within a range. If the voltage level of the regulation signal is within the range, the regulation circuit may generate a switch signal. The switch may adjust a voltage level of the pre-regulation signal based on the switch signal.

Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 1 or greater) turns including first to n-th turns. The coils are each made from a conductive member having a polygonal cross section. On a cross section obtained when one of the coils is cut in a corresponding one of directions of protrusion of the teeth from the stator core, the one of the coils includes a recess on at least either a first opposing surface representing an opposing surface to a corresponding one of the teeth or a second opposing surface representing an opposing surface to another one of the coils, which is wound onto adjacent one of the teeth. A space allowing refrigerant used for cooling the coils to pass through is provided between the recess and at least either the first opposing surface or the second opposing surface.

Abstract: A switching period in a burst cycle includes three pulses, that is to say, a start pulse that turns on a low-side switching element, a main pulse that turns on a high-side switching element, and an end pulse that turns on the low-side switching element. A burst stop period corresponding to the magnitude of a load is set during a switching stop period. When the burst cycle approaches a cycle corresponding to a frequency close to the upper limit of the audible frequencies, a second off-threshold voltage of the main pulse is made equal to a first off-threshold voltage of the start pulse to narrow the on-width of the main pulse. By doing so, energy transmitted to the secondary side of a transformer is reduced and the burst cycle is shortened.

Abstract: A system includes a transformer having an auxiliary coil to provide a flyback voltage to a primary side of an alternating current to direct current (AC-DC) converter. A primary side controller includes an auxiliary pin coupled to the transformer and to an external capacitor, the auxiliary pin to receive the flyback voltage after startup. a junction gate field-effect transistor (JFET) coupled to a supply voltage. A first FET is coupled in series between the JFET and the auxiliary pin, the JFET to charge the external capacitor from the supply voltage during startup. One or more depletion region diodes are coupled to a gate of the first FET, the one or more depletion region diodes to bias a voltage of the gate of the first FET to a specific voltage.

Abstract: A system for limiting power consumption from an auxiliary power supply is provided with a controller configured to toggle a switching circuit in accordance with an output of a sensing module and a time threshold, to sequentially cause the auxiliary power supply to be disconnected from an output terminal when the time threshold is reached and connected to the output terminal when a fault condition in the system is identified.

Abstract: To provide an individual boost circuit capable of boosting a minute power voltage to a target voltage more reliably. An individual boost circuit includes a first PMOS transistor that has a gate to which a first clock voltage is applied and performs on- and off-operations; a second PMOS transistor that has a gate to which a second clock voltage that has a reciprocal relation with the first clock voltage is applied and performs the on- and off-operations; an auxiliary capacitor; a boost capacitor; an auxiliary charging circuit 211 that charges an auxiliary capacitor via the second PMOS transistor with a power voltage from an external power when the first PMOS translator enters an off-state and the second PMOS transistor enters an on-state; and a boost charging circuit 212 that charges the boost capacitor via the first PMOS transistor with the second clock voltage through the auxiliary capacitor when the first PMOS transistor enters the on-state and the second switching transistor enters the off-state.

Abstract: A hollow metal part is used as a pipe component for a refrigerant flow path of a rotating electrical machine adapted to cool a stator coil with a refrigerant. The rotating electrical machine includes a connection arm that couples the stator coil and a power supply terminal at a stator coil end portion of the stator coil, and an insulating hose that is coupled to the stator coil and the connection arm through a first hollow metal part in order to supply the refrigerant to the stator coil and the connection arm. The first hollow metal part is formed integrally by joining a part formed of stainless steel to a part made of oxygen-free copper.

Abstract: A three-phase induction motor includes: a stator having a stator slot having an open slot structure for inserting a formed coil; and a rotor having a rotor slot into which a conductor bar is inserted, the rotor being placed on an inner side of the stator with a clearance between the rotor and the stator. The conductor bar has a polygonal cross-sectional shape having six or more angles, and both end portions of an outer-circumference-side edge surface of the conductor bar are rounded.

Abstract: Disclosed herein is an electrostatic chuck (ESC) carrier. The ESC carrier may comprise a carrier substrate having a first surface and a second surface opposite the first surface. A first through substrate opening and a second through substrate opening may pass through the carrier substrate from the first surface to the second surface. A first conductor is in the first through substrate opening, and a second conductor is in the second through substrate opening. The ESC carrier may further comprise a first electrode over the first surface of the carrier substrate and electrically coupled to the first conductor, and a second electrode over the first surface of the carrier substrate and electrically coupled to the second conductor. An oxide layer may be formed over the first electrode and the second electrode.

Abstract: A drive control apparatus for a switching element drives a switching element including a sense element, and includes a drive circuit that provides a gate driving signal to the switching element, a transient characteristic absorbing circuit that absorbs a transient characteristic of the sense element when the switching element is turned on, and a determination circuit that determines an overcurrent or a short-circuit state of the switching element from an output of the sense element.