Abstract: The present invention discloses an upper limb exoskeleton rehabilitation device with man-machine motion matching and side-to-side interchanging, comprising a chassis bracket assembly, a shoulder girdle abduction assembly, a side-to-side interchanging assembly and a mechanical arm coupling member; the chassis bracket assembly includes a frame and a lifting unit mounted on the frame; the shoulder girdle abduction assembly is mounted on the lifting unit to be driven by the lifting unit to move up and down; the side-to-side interchanging assembly is rotatably connected to the shoulder girdle abduction assembly and the mechanical arm coupling member, the mechanical arm coupling member is configured to mount the mechanical arm and drive the mechanical arm to rotate with the respective rotating joints, and through an upper locking assembly and a lower locking assembly mounted on the side-to-side interchanging assembly, the side-to-side interchanging assembly is fixed or rotated relative to the shoulder girdle abduct

Abstract: A railway vehicle local multi-functional component includes a main body. The main body is an aluminum alloy profile, a reinforcing plate is provided on an outer surface of a bottom plate of the aluminum alloy profile as a vehicle lifting pad, built-in threaded seats are provided on an inner surface of the bottom plate of the aluminum alloy profile as a mounting seat for an anti-yaw damper of a bogie, and a through hole integrally formed with the aluminum alloy profile is provided in the aluminum alloy profile as a cable passage. Multifunction is realized by one structure, thus greatly simplifying the vehicle body local structure, and improving structural strength. A railway vehicle including the local multi-functional component is included.

Abstract: A handle device adapted to be mounted to a container including a base defining a space, and a cover openably mounted to the base to cover the receiving space. The cover is formed with a through hole spatially communicated with the receiving space. The handle device includes a handle that is adapted to be mounted to the cover and that defines an installation space adapted to be spatially communicated with the through hole, and a receiving box that is detachably received in the installation space and that defines a feeding space spatially communicated with the installation space. A cooking apparatus including the container and the handle device is also provided.

Abstract: A railway vehicle local multi-functional component includes a main body. The main body is an aluminium alloy profile, a reinforcing plate is provided on an outer surface of a bottom plate of the aluminium alloy profile as a vehicle lifting pad, built-in threaded seats are provided on an inner surface of the bottom plate of the aluminium alloy profile as a mounting seat for an anti-yaw damper of a bogie, and a through hole integrally formed with the aluminium alloy profile is provided in the aluminium alloy profile as a cable passage. Multifunction is realized by one structure, thus greatly simplifying the vehicle body local structure, and improving structural strength. A railway vehicle including the local multi-functional component is included.

Abstract: A synchronous rectification converter circuit is provided, including three transformer secondary-windings, three current transformers, a synchronous rectification switching circuit, a diode rectification circuit, and a control circuit. Each of three current transformers includes a primary-winding and secondary-winding. The three transformer secondary-windings and the three current transformer primary-windings are alternately connected in series to form a first triangular structure circuit. Three vertices of the first triangular structure circuit are connected to the synchronous rectification switching circuit. The three current transformer secondary-windings are connected in series to form a second triangular structure circuit. Three vertices of the second triangular structure circuit are connected to the diode rectification circuit. The diode rectification circuit is connected to the control circuit and the synchronous rectification switching circuit is connected to the control circuit.

Abstract: Embodiments of the present disclosure provide a method, an apparatus, and a system for authenticating a fully homomorphic message, where the method includes: acquiring a message authentication key, where: the message authentication key includes a public key, a first character string, and a second character string; the first character string is a character string that consists of 0 and 1 and has a length of n; the second character string is a character string that consists of 0 and 1 and has a length of n; generating an authentication fingerprint corresponding to each bit of to-be-computed data; sending a computation request to a server; receiving an authentication fingerprint corresponding to the computation result; and performing correctness authentication on the computation result according to the received authentication fingerprint, which effectively reduces an amount of computation in a verification process.

Abstract: A railway vehicle and a head car cowcatcher thereof are provided. The head car cowcatcher includes a flow guiding plate; a front-end frame mounted at a front end of an inner side surface of the flow guiding plate; and longitudinal sills mounted at two sides of the inner side surface of the flow guiding plate. Two ends of the front-end frame are respectively connected to the longitudinal sills located at the two sides. The rigidity of a connecting part of the longitudinal sills and the front-end frame is smaller than the rigidities of any parts of the longitudinal sills and the front-end frame. When obstructions are cleared or a train collision occurs, the connecting part of the front-end frame and each of the longitudinal sills would be largely deformed if the impact force the cowcatcher bears is beyond the maximum load the cowcatcher can bear.

Abstract: The present disclosure discloses a multipath current source switching device, including a switching control unit, N current paths, and N loads. Each current path is formed by a constant current source circuit and a switching circuit. One terminal of a first load is coupled to a load power supply, and the other terminal of the first load is coupled to an output terminal of a constant current source circuit of a first current path and one terminal of a second load; one terminal of an ith load is coupled to the other terminal of an (i?1)th load and an output terminal of a constant current source circuit of an ith current path; and the switching control unit controls an output current of a corresponding constant current source circuit through a corresponding switching circuit.

Abstract: The present invention provides a synchronous rectification converter circuit, including three transformer secondary-windings, three current transformer, a synchronous rectification switching unit, a diode rectification unit, and a control unit. Each of three current transformers includes a primary-winding and secondary-winding. The three transformer secondary-windings and the three current transformer primary-windings are alternately connected in series to form a first triangular structure. Three vertices of the first triangular structure are connected to the synchronous rectification switching unit. The three current transformer secondary-windings are connected in series to form a second triangular structure. Three vertices of the second triangular structure are connected to the diode rectification unit. The diode rectification unit is connected to the control unit and the synchronous rectification switching unit is connected to the control unit.

Abstract: Disclosed is a wave amplification power-generating boat, comprising float systems (1), a support system (2), a hydraulic turbine power-generating system (3) or a float power-generating system (7) or a canard-type power-generating system (8), a wind rudder system (4), a propeller (5), a mooring system (6) and a wave detector system (9). The float systems (1) are capable of moving on a support; the support system (2) is used to connect the float systems (1) at two ends, with the hydraulic turbine power-generating system (3) or the float power-generating system (7) or the canard-type power-generating system (8) installed in the middle, and installing the wind rudder system (4), the propeller (5), the mooring system (6), and the wave detector system (9); the hydraulic turbine power-generating system (3), etc.

Abstract: A synchronous rectification converter circuit is provided, including three transformer secondary-windings, three current transformers, a synchronous rectification switching circuit, a diode rectification circuit, and a control circuit. Each of three current transformers includes a primary-winding and secondary-winding. The three transformer secondary-windings and the three current transformer primary-windings are alternately connected in series to form a first triangular structure circuit. Three vertices of the first triangular structure circuit are connected to the synchronous rectification switching circuit. The three current transformer secondary-windings are connected in series to form a second triangular structure circuit. Three vertices of the second triangular structure circuit are connected to the diode rectification circuit. The diode rectification circuit is connected to the control circuit and the synchronous rectification switching circuit is connected to the control circuit.

Abstract: A railway vehicle and a head car cowcatcher thereof are provided. The head car cowcatcher includes a flow guiding plate; a front-end frame mounted at a front end of an inner side surface of the flow guiding plate; and longitudinal sills mounted at two sides of the inner side surface of the flow guiding plate. Two ends of the front-end frame are respectively connected to the longitudinal sills located at the two sides. The rigidity of a connecting art of the longitudinal sills and the front-end frame is smaller than the rigidities of any parts of the longitudinal sills and the front-end frame. When obstructions are cleared or a train collision occurs, the connecting part of the front-end frame and each of the longitudinal sills would be largely deformed if the impact force the cowcatcher bears is beyond the maximum load the cowcatcher can bear.

Abstract: A bridgeless power factor correction (PFC) circuit, which includes an alternating current power supply module, a power module, and a control module; the power module includes one or more interleaved PFC circuits, each interleaved PFC circuit includes one inductor, one pair of first switching components, and at least one capacitor, a first end of the inductor is connected to the alternating current power supply module, and a second end of the inductor is connected to one end of each capacitor through one of the first switching components and is also connected to the other end of each capacitor through the other one of the first switching components; and the control module samples a current of each first switching component in the power module, and turns off a first switching component through which a negative current flows.

Abstract: A synchronous rectifier control circuit an includes a current transformer (CT), a bridge rectifier, and a comparator, where the CT is connected in series to a secondary side, performs sampling on a loop current of the secondary side to obtain a current detection signal, and outputs the obtained current detection signal to the bridge rectifier; the bridge rectifier acquires a secondary-side sampling current according to the current detection signal, and outputs the secondary-side sampling current to the comparator so that the comparator generates a voltage difference; and an output signal of the comparator turns over so as to control on and off of a synchronous rectifier transistor. In this way, high-speed and high-precision control over a synchronous rectifier transistor can be implemented. The control is simple and is low in cost.

Abstract: Embodiments of the present disclosure provide a method, an apparatus, and a system for authenticating a fully homomorphic message, where the method includes: acquiring a message authentication key, where: the message authentication key includes a public key, a first character string, and a second character string; the first character string is a character string that consists of 0 and 1 and has a length of n; the second character string is a character string that consists of 0 and 1 and has a length of n; generating an authentication fingerprint corresponding to each bit of to-be-computed data; sending a computation request to a server; receiving an authentication fingerprint corresponding to the computation result; and performing correctness authentication on the computation result according to the received authentication fingerprint, which effectively reduces an amount of computation in a verification process.

Abstract: The present invention provides a synchronous rectification converter circuit, including three transformer secondary-windings, three current transformer, a synchronous rectification switching unit, a diode rectification unit, and a control unit. Each of three current transformers includes a primary-winding and secondary-winding. The three transformer secondary-windings and the three current transformer primary-windings are alternately connected in series to form a first triangular structure. Three vertices of the first triangular structure are connected to the synchronous rectification switching unit. The three current transformer secondary-windings are connected in series to form a second triangular structure. Three vertices of the second triangular structure are connected to the diode rectification unit. The diode rectification unit is connected to the control unit and the synchronous rectification switching unit is connected to the control unit.

Abstract: The present disclosure discloses a multipath current source switching device, including a switching control unit, N current paths, and N loads. Each current path is formed by a constant current source circuit and a switching circuit. One terminal of a first load is coupled to a load power supply, and the other terminal of the first load is coupled to an output terminal of a constant current source circuit of a first current path and one terminal of a second load; one terminal of an ith load is coupled to the other terminal of an (i?1)th load and an output terminal of a constant current source circuit of an ith current path; and the switching control unit controls an output current of a corresponding constant current source circuit through a corresponding switching circuit.

Abstract: The present invention provides a resonant bidirectional converter, an uninterruptible power supply apparatus, and a control method. The resonant bidirectional converter includes: a filter capacitor, three primary side bridge arms, a resonant cavity, three transformers, and three secondary side bridge arms, where two ends of each of the primary side bridge arms are separately connected to two ends of a bus capacitor, each of the primary side bridge arms includes two semiconductor switch that are serially connected in a same direction, and any connection point located between the two semiconductor switch of the primary side bridge arm that are serially connected in the same direction is a first connection point.

Abstract: A synchronous rectifier control circuit an includes a current transformer (CT), a bridge rectifier, and a comparator, where the CT is connected in series to a secondary side, performs sampling on a loop current of the secondary side to obtain a current detection signal, and outputs the obtained current detection signal to the bridge rectifier; the bridge rectifier acquires a secondary-side sampling current according to the current detection signal, and outputs the secondary-side sampling current to the comparator so that the comparator generates a voltage difference; and an output signal of the comparator turns over so as to control on and off of a synchronous rectifier transistor. In this way, high-speed and high-precision control over a synchronous rectifier transistor can be implemented. The control is simple and is low in cost.

Abstract: A bridgeless power factor correction (PFC) circuit, which includes an alternating current power supply module, a power module, and a control module; the power module includes one or more interleaved PFC circuits, each interleaved PFC circuit includes one inductor, one pair of first switching components, and at least one capacitor, a first end of the inductor is connected to the alternating current power supply module, and a second end of the inductor is connected to one end of each capacitor through one of the first switching components and is also connected to the other end of each capacitor through the other one of the first switching components; and the control module samples a current of each first switching component in the power module, and turns off a first switching component through which a negative current flows.