Abstract: A driving system having a hollow shaft, a solid shaft arranged in the hollow shaft, a stator, a rotor connected to the hollow shaft, a clutch mechanism selectively engaged to one of the stator and the rotor, and a speed reduction mechanism having a planetary carrier assembly engaged to the clutch mechanism, and a planetary gear train connected between the solid shaft and the rotor, wherein where the clutch mechanism is engaged to the stator in a transmission manner, the planetary carrier assembly is connected with the stator, and the rotor drives the solid shaft and the hollow shaft to operate at a differential speed, and where the clutch mechanism is engaged to the rotor in the transmission manner, the planetary carrier assembly is connected with the rotor, and the rotor drives the solid shaft and the hollow shaft to operate at a same speed by the planetary gear train.

Abstract: A light-emitting device, a light-emitting substrate, and a method for manufacturing the light-emitting device. The light-emitting device includes at least one light-emitting structure. The light-emitting structure includes: a first semiconductor layer; a light-emitting layer; a second semiconductor layer, doping ions of the second semiconductor layer and a first semiconductor layer being oppositely charged; a barrier structure provided with an opening for exposing the second semiconductor layer, the orthographic projection of the opening on the base substrate being located in the orthographic projection of the light-emitting layer on the base substrate, and the area of the opening being smaller than that of the light-emitting layer; and a landing electrode located on the side of the barrier structure facing away from the second semiconductor layer, the landing electrode being in contact with the second semiconductor layer by means of the opening.

Abstract: The present disclosure relates to systems and methods for video surveillance. The systems may obtain an initial time period corresponding to at least part of a time period during which at least one target image frame is captured by the monitoring equipment based on at least one parameter of a monitoring equipment. The systems may obtain a warning scheme associated with the initial time period. The warning scheme may include controlling an operation of a light associated with the monitoring equipment within at least one candidate time period in the initial time period and processing the at least one target image frame.

Abstract: Disclosed is a service quality prediction method in a service network environment. The method includes the steps of (1) constructing a service uncertainty quality model of a user through service quality log information generated when the user invokes the same or different services multiple times; (2) tapping a set of similar users of a target user based on the service uncertainty quality model of the user; and (3) improving a matrix factorization algorithm based on similarity information of the set of similar users of the target user to achieve accurate prediction of service quality. The service quality prediction method of the present invention can provide a basis for decision-making, perform targeted service optimization based on the service quality information, and provide more accurate service recommendation.

Abstract: A drive motor, a drive system and a vehicle are provided. The drive motor has a motor housing and a stator core provided in the motor housing. The motor housing has a fluid inlet and a fluid outlet. A cut edge is disposed on an outer peripheral wall of the stator core. The cut edge extends in an axial direction of the stator core. A cooling fluid flow path is formed by a space between the cut edge and an inner peripheral wall of the motor housing. The fluid inlet and the fluid outlet are in communication with the cooling fluid flow path.

Abstract: A motor and a vehicle are provided. The motor has a housing, a stator, a first end cove, a second end cover, a first oil injection ring, a rotor, a first end plate, and a second end plate. The rotor includes a rotor core, a rotor oil path formed in the rotor core, a rotor magnet steel, a rotation shaft, and a rotation shaft oil path formed in the rotation shaft. A first oil groove is defined on an inner side surface of the first end plate opposite to the rotor core, and is in communication with the rotation shaft oil path and the rotor oil path, respectively. A first end plate oil outlet is defined in an outer side surface of the first end plate and communicates the first oil groove with an inner cavity of the housing.

Abstract: The present invention discloses a service pattern quantitative evaluation method for crossover services: defining top elements of the service pattern, including defining participants, workflow, data flow, resource flow and cash flow; describing participants in the service pattern; describing the workflow among the participants based on existing participants; on the basis of the workflow among the participants, describing the data flow among the participants; on the basis of the workflow among the participants, describing the resource flow among the participants; on the basis of the workflow among the participants, describing the cash flow among the participants; based on the described workflow, data flow, resource flow and cash flow, calculating the evaluation indicators of the service pattern, including running time, consumption cost, transfer efficiency, value, and reliability; and calculating pattern entropy based on the evaluation indicators to conduct overall evaluation of the service pattern.

Abstract: A rotor for a motor is provided. The rotor has a rotor core, first permanent magnets mounted in first grooves of the rotor core, and second permanent magnets mounted in second grooves of the rotor core. The rotor core is provided with groove groups distributed in a peripheral direction of the rotor core. Each groove group has an air groove, a first groove and a second groove. The ends of the air groove, the first groove and the second groove, which are close to a center point of the rotor core, are close to one another. The end of the air groove, the first groove and the second groove, which are away from the center point of the rotor core, are away from one another. Multiple magnetic isolation structures are provided in the rotor core.

Abstract: An electric motor (100) includes an excitation stator (10), a salient-pole rotor (20) and an excitation rotor (30), any two of the excitation stator (10), the salient-pole rotor (20) and the excitation rotor (30) being rotatable relative to each other; and a switching actuator (50) configured to select at least one of the salient-pole rotor (20) and the excitation rotor (30) to serve as a rotor rotatable relative to the excitation stator (10) by selectively fixing relative positions of two of the excitation stator (10), the salient-pole rotor (20) and the excitation rotor (30).

Abstract: A non-mechanical differential coaxial counter-rotating power device (100) includes an inner shaft (51), an outer shaft (52), a reluctance rotor (30), a permanent magnet rotor (40), a stator (10) and a driving device (20). The outer shaft (52) is fitted over the inner shaft (51), an end of the inner shaft (51) protruding from the outer shaft (52). The reluctance rotor (30) is connected to one of the end of the inner shaft (51) and an end of the outer shaft (52), and the permanent magnet rotor (40) is connected to the other one of the end of the inner shaft (51) and the end of the outer shaft (52). The stator (10) is coaxially disposed with the reluctance rotor (30) and disposed at an inner side or an outer side of the reluctance rotor (30) opposite to the permanent magnet rotor (40). The stator (10) includes a stator core (11) and a main winding (12) and an auxiliary winding (13), and the main winding and the auxiliary winding are wound around the stator core (11).

Abstract: A driving system having a hollow shaft, a solid shaft arranged in the hollow shaft, a stator, a rotor connected to the hollow shaft, a clutch mechanism selectively engaged to one of the stator and the rotor, and a speed reduction mechanism having a planetary carrier assembly engaged to the clutch mechanism, and a planetary gear train connected between the solid shaft and the rotor, wherein where the clutch mechanism is engaged to the stator in a transmission manner, the planetary carrier assembly is connected with the stator, and the rotor drives the solid shaft and the hollow shaft to operate at a differential speed, and where the clutch mechanism is engaged to the rotor in the transmission manner, the planetary carrier assembly is connected with the rotor, and the rotor drives the solid shaft and the hollow shaft to operate at a same speed by the planetary gear train.

Abstract: An electric motor (100) includes an excitation stator (10), a salient-pole rotor (20) and an excitation rotor (30), any two of the excitation stator (10), the salient-pole rotor (20) and the excitation rotor (30) being rotatable relative to each other; and a switching actuator (50) configured to select at least one of the salient-pole rotor (20) and the excitation rotor (30) to serve as a rotor rotatable relative to the excitation stator (10) by selectively fixing relative positions of two of the excitation stator (10), the salient-pole rotor (20) and the excitation rotor (30).

Abstract: A non-mechanical differential coaxial counter-rotating power device (100) includes an inner shaft (51), an outer shaft (52), a reluctance rotor (30), a permanent magnet rotor (40), a stator (10) and a driving device (20). The outer shaft (52) is fitted over the inner shaft (51), an end of the inner shaft (51) protruding from the outer shaft (52). The reluctance rotor (30) is connected to one of the end of the inner shaft (51) and an end of the outer shaft (52), and the permanent magnet rotor (40) is connected to the other one of the end of the inner shaft (51) and the end of the outer shaft (52). The stator (10) is coaxially disposed with the reluctance rotor (30) and disposed at an inner side or an outer side of the reluctance rotor (30) opposite to the permanent magnet rotor (40). The stator (10) includes a stator core (11) and a main winding (12) and an auxiliary winding (13), and the main winding and the auxiliary winding are wound around the stator core (11).

Abstract: An electric motor rotor (100) and an electric motor having the same are provided. The electric motor rotor (100) includes a rotor body (1) provided with a rotor bore (11) and a plurality of magnetic steel slots (12) surrounding the rotor bore (11), in which an outer contour of the rotor body (1) includes a plurality of concentric arc segments (101) in concentric with the rotor bore (11) and a plurality of connecting line segments (102) connecting adjacent concentric arc segments (101), and the connecting line segment (102) includes at least one straight line segment (1021), in which an included angle ? between a central normal line of each straight line segment (1021) and a connecting line between a midpoint of the straight line segment (1021) and a center of the rotor bore (11) satisfies 0°???20°; and a plurality of magnetic steel bars (2).

Abstract: Disclosed are a multi-carrier superposition method and device. First, input carrier signals are superposed, and gain reduction processing is conducted during the superposition process, and then CFR processing and increase processing are conducted on the superposed carrier signals. Thus, under the circumstance of multi-carrier superposition, it can be effectively ensured that signals cannot overflow, and meanwhile the requirement for precision of a system during processing is met.

Abstract: Provided are a single phase induction motor and a washing machine having the same. The single phase induction motor includes a stator and a rotor rotationally fitted with the stator, the stator includes a stator core and a stator winding disposed on the stator core, the rotor is of a squirrel cage type structure, and the single phase induction motor has two poles, a synchronous speed of 3000 rpm or 3600 rpm, and a rated speed ranging from 2200 rpm to 2800 rpm or ranging from 2600 rpm to 3400 rpm.

Abstract: An electric motor rotor (100) and an electric motor having the same are provided. The electric motor rotor (100) includes a rotor body (1) provided with a rotor bore (11) and a plurality of magnetic steel slots (12) surrounding the rotor bore (11), in which an outer contour of the rotor body (1) includes a plurality of concentric arc segments (101) in concentric with the rotor bore (11) and a plurality of connecting line segments (102) connecting adjacent concentric arc segments (101), and the connecting line segment (102) includes at least one straight line segment (1021), in which an included angle ? between a central normal line of each straight line segment (1021) and a connecting line between a midpoint of the straight line segment (1021) and a center of the rotor bore (11) satisfies 0°???20°; and a plurality of magnetic steel bars (2).

Abstract: Disclosed are a multi-carrier superposition method and device. First, input carrier signals arc superposed, and gain reduction processing is conducted during the superposition process, and then CFR processing and increase processing are conducted on the superposed carrier signals. Thus, under the circumstance of multi-carrier superposition, it can be effectively ensured that signals cannot overflow, and meanwhile the requirement for precision of a system during processing is met.

Abstract: The present disclosure discloses a method and a device for displaying weather. The method includes: acquiring weather information and orientation information of a terminal device; generating a weather animation according to the weather information and the orientation information of the terminal device; and displaying the weather animation on the terminal device. Accordingly, a plurality of weather conditions are comprehensively and dynamically presented via integrated motion pictures, and the weather conditions are displayed more accurately, realistically, and intuitively.