Abstract: Disclosed in the present disclosure is an evaluation method for a health status of an industrial complex system based on a physical information neural network model, including: acquiring status monitoring data of an industrial complex system; building an empirical degradation model of the industrial complex system, and constructing a physical information neural network model based on the empirical degradation model, the physical information neural network model including a solution network and a dynamic network; constructing statistical features from the status monitoring data as an input, and training the physical information neural network model; and after training of the physical information neural network model is completed, performing forward reasoning by using the solution network to predict the health status of the industrial complex system.

Abstract: A multi-spectrum fusion decision fault diagnosis method for a high-speed electric multiple-unit bearing, including the steps of collecting, by an acceleration sensor vibration acceleration signals of a high-speed electric multiple-unit; performing multi-method spectrum analysis on vibration acceleration signal data of a plurality of faults under a constant working condition, and marking the data to construct a spectrum data set; extracting inherent fault features of the spectrum data set to form a fault feature data set; performing weight fusion on spectrum fault features of different methods to construct a spectrum fault feature function, and fusing each set of spectra in the spectrum data set into a data point; using a criterion that a fisher discrimination ratio minimizes an intra-class spacing and maximizes an inter-class spacing to seek an optimal weight combination under the data set, so that fusion data points distinguish the different types of faults to a maximum degree.

Abstract: A schlieren system for in-situ/online monitoring of spatter in a large-area melt pool is provided, including a parallel light generation part, a parallel light deflection part, and an image acquisition part. The system can monitor spatter and other physical phenomena in the melt pool in a process of multi-layer printing and adjust a monitored area during an experiment to expand a monitored range. A reflector group composed of a plurality of plane mirrors is arranged, such that an optical path can be kept away from powder and dust areas, avoiding interference between the schlieren system and inherent devices inside a build chamber. Communication between a laser path controller and an optical path deflecting mirror galvanometer motor controller is established to automatically control the plane mirrors to change the monitored area, automatically track the melt pool, and realize online monitoring.

Abstract: Disclosed is a method for manufacturing solar cell. The method includes: providing a solar cell substrate; forming a first initial electrode on the solar cell substrate; and controlling a laser to perform a continuous moving irradiation on the solar cell substrate, and performing a laser-assisted sintering treatment on the first initial electrode to form a first electrode and obtain the solar cell. The number of times the laser is controlled to perform the continuous moving irradiation on the solar cell substrate is at least once. There is a target irradiation process among all continuous moving irradiation processes, in which a moving direction of the laser and a longitudinal extension direction of the first electrode intersect with each other and are perpendicular to a thickness direction of the solar cell substrate.

Abstract: An electronic device includes a casing assembly, a motherboard, a first heat source, a first cold plate and a first pipeline. The casing assembly includes a casing, a regulating joint, an outlet joint and an inlet joint. An interior space of the casing accommodates a coolant, the regulating joint, the outlet joint and the inlet joint are disposed on the casing, and the regulating joint and the outlet joint communicate with the interior space. The motherboard is located in the interior space and immersed in the coolant. The first heat source is located in the interior space. The first cold plate is thermally coupled to the first heat source. The first cold plate has a first inlet and a first outlet, and the first outlet communicates with the interior space. The first pipeline is connected to the inlet joint and the first inlet of the first cold plate.

Abstract: Disclosed is a torque sensing bionic clamping jaw. In the torque sensing bionic clamping jaw, a left clamping jaw skeleton is movably connected to a substrate, the left clamping jaw skeleton includes a first left groove and a second left groove which are in a side facing a right jaw, a left sensor quick-release connecting piece is detachably connected to the first left groove, a left torque measuring sensor is mounted on the left sensor quick-release connecting piece, a left flexible gasket quick-release connecting piece is detachably connected to the second left groove, and a left flexible gasket is mounted on the left flexible gasket quick-release connecting piece; a right torque measuring sensor is mounted on a right sensor quick-release connecting piece and opposite to the left torque measuring sensor, and a right flexible gasket is mounted on a right flexible gasket quick-release connecting piece.

Abstract: The present disclosure discloses a method for detecting anomalies in acroengine variable working conditions based on a multi-band wavelet network, including the steps of: collecting monitoring signals of an acroengine in a healthy state under a plurality of working conditions and corresponding working condition information; constructing and training a multi-band wavelet network using the signals and working conditions; calculating a state monitoring index of the signal using the trained network; determining a monitoring threshold according to the state monitoring index; and determining whether or not the engine is abnormal by comparing the state monitoring indexes of the monitoring signals of the aeroengine under the plurality of working conditions to the monitoring threshold. The present disclosure fully considers the advantages and disadvantages of the signal processing technique with the deep learning network for fault diagnosis.

Abstract: A controller used in an isolated switching converter having a transformer, a primary switch and a secondary switch. The controller has an ON-time control circuit. The secondary switch is turned on for a second ON-time after a current flowing through the secondary switch decreases to zero. The ON-time control circuit provides an ON-time control signal to control the second ON-time of the secondary switch based on a drain terminal voltage of the secondary switch, the output voltage of the isolated switching converter and a resistance of an external resistor outside of the controller.

Abstract: A controller for a quasi-resonant controlled switching converter includes a sample-and-hold circuit for providing a plateau voltage based on a voltage detection signal that represents a voltage across a power switch, a first voltage-dividing circuit for providing a first divided voltage based on the plateau voltage, a timing circuit, a first converting unit, an enable circuit for providing an enable signal corresponding to a target valley number for a valley switching of the power switch, and a logic circuit. The timing circuit starts timing when the voltage detection signal is lowered to the first divided voltage and ends timing when the voltage detection signal is lowered to a zero-crossing threshold voltage. The first converting unit provides a control voltage corresponding to the time duration of the timing circuit. The logic circuit turns on the power switch based on the control voltage and the enable signal.

Abstract: A controller used in a switching power supply having a power switch and an energy storage element. A winding voltage of the energy storage element oscillates to provide an oscillation signal having one or more valleys during an OFF period of the power switch. The controller has a target valley number generator for providing a target locked valley number which is not exceeding an upper limit, a first comparison circuit for providing a first square wave signal by comparing a voltage sensing signal representative of the oscillation signal with a first threshold voltage, a second comparison circuit for providing a second square wave signal by comparing the voltage sensing signal with a second threshold voltage less than the first threshold voltage, and an upper limit updating circuit to determine if to update the upper limit.

Abstract: The present disclosure relates to a liquid cooling server cabinet, including a cabinet body, a liquid cooling module, and a pluggable assembly. The cabinet body is provided with a receiving cavity, and the pluggable assembly is arranged in the receiving cavity. The pluggable assembly includes at least one pluggable portion. The liquid cooling module includes at least one liquid cooling unit corresponding to the at least one pluggable portion. The pluggable portion is configured for a plugging and mounting of a single-node server that defines a cooling cavity. When the pluggable portion is mounted with the single-node server, the liquid cooling unit is communicated with the cooling cavity of the corresponding single-node server.

Abstract: An integrated control circuit for switching converter in a multi-converter switching power supply. The integrated control circuit has a transmission terminal for receiving an enable signal indicating that the multi-converter switching power supply operates in a first or a second power supply mode. In the first power supply mode, the integrated control circuit as a master control circuit provides a control signal to control the switching converter based on a feedback signal representing an output voltage, and the transmission terminal of the master control circuit provides a time indication pulse signal to a transmission terminal of a slave control circuit. The integrated control circuit as the salve control circuit receives the time indication pulse signal from the transmission terminal of the master control circuit and provides the control signal to control the switching converter based on the time indication pulse signal.

Abstract: An integrated control circuit for a multi-converter switching power supply. Each switching converter has a primary switch and a secondary switch. The secondary switch is turned on twice in a switching cycle. A master integrated control circuit has a transmission terminal for providing a time indication pulse signal. A slave integrated control circuit has a transmission terminal for receiving the time indication pulse signal and turns on its secondary switch for a second ON-time. The second ON-time is adjusted based on the time indication pulse signal, a third duration between a start point when the primary switch is turned on and a stop point when a current flowing through the secondary switch crosses zero, and a fourth duration between the stop point and a subsequent start point.

Abstract: A controller used in an isolated switching converter with a transformer, a primary switch and a secondary switch, the controller has a maximum sense circuit for providing a first voltage signal representative of a maximum value of a first voltage across the secondary switch, and a timer for starting timing when the first voltage increases to a second voltage signal less than the first voltage signal and stop timing when the first voltage increases to the first voltage signal, and the timing duration of the timer is a first time interval. The secondary switch is turned on for a second ON-time after a current flowing through the secondary switch decreases to zero. The second ON-time of the secondary switch is adjusted so that the first time interval of the next switching cycle is close to a first time threshold.

Abstract: Disclosed is a rigid-flexible coupled continuum robot unit and a continuum robot. In the rigid-flexible coupled continuum robot unit, structural unit blocks are staggered and interconnected to constitute an entire manipulator; two ends of a flexible nickel-titanium rod are respectively connected with two adjacent structural unit blocks; a front-end unit block is arranged at a foremost end of the manipulator; and a rear-end unit block is arranged at a rearmost end of the manipulator. When in use, a memory alloy nickel-titanium rod forms a flexible joint, a limiting clamping jaw and a limiting boss form a rigid joint, the two complement each other, after a drive wire applies pressure, the limiting clamping jaw and the limiting boss are in a wrapping relationship, a motion trail of the robot unit is limited, such that the robot unit always rotates around a center of rotation along an arc.

Abstract: A schlieren system for in-situ/online monitoring of spatter in a large-area melt pool is provided, including a parallel light generation part, a parallel light deflection part, and an image acquisition part. The system can monitor spatter and other physical phenomena in the melt pool in a process of multi-layer printing and adjust a monitored area during an experiment to expand a monitored range. A reflector group composed of a plurality of plane mirrors is arranged, such that an optical path can be kept away from powder and dust areas, avoiding interference between the schlieren system and inherent devices inside a build chamber. Communication between a laser path controller and an optical path deflecting mirror galvanometer motor controller is established to automatically control the plane mirrors to change the monitored area, automatically track the melt pool, and realize online monitoring.

Abstract: A controller used in an isolated switching converter having a transformer, a primary switch and a secondary switch. The controller has an error amplifying circuit, a control generator and an isolation circuit. The error amplifying circuit generates a first compensation signal based on the difference between a reference voltage and an output feedback signal. The control generator generates a first and second control signals based on the first compensation signal. The isolation circuit has a first channel for providing a first synchronous signal electrically isolated from the first control signal, for controlling a peak value of a current flowing through the primary switch, and has a second channel for providing a second synchronous signal electrically isolated from the second control signal, for controlling the switching frequency of the primary switch.

Abstract: A controller used in an isolated switching converter. The controller has an error amplifying circuit for generating a first compensation signal based on the difference between an output feedback signal and a reference voltage, a control generator for generating a first and second control signals based on the first compensation signal, an isolation circuit for providing a first synchronous signal electrically isolated from the first control signal and a second synchronous signal electrically isolated from the second control signal, an upper threshold generator for providing an upper threshold voltage, and a peak current generator for providing a peak current signal for controlling a peak value of a current flowing through the primary switch based on the first synchronous signal, the second synchronous signal and the upper threshold voltage. The upper threshold voltage is adjusted above a first upper threshold voltage when a peak power demand is made.

Abstract: Disclosed is a rigid-flexible coupled continuum robot unit and a continuum robot. In the rigid-flexible coupled continuum robot unit, structural unit blocks are staggered and interconnected to constitute an entire manipulator; two ends of a flexible nickel-titanium rod are respectively connected with two adjacent structural unit blocks; a front-end unit block is arranged at a foremost end of the manipulator; and a rear-end unit block is arranged at a rearmost end of the manipulator. When in use, a memory alloy nickel-titanium rod forms a flexible joint, a limiting clamping jaw and a limiting boss form a rigid joint, the two complement each other, after a drive wire applies pressure, the limiting clamping jaw and the limiting boss are in a wrapping relationship, a motion trail of the robot unit is limited, such that the robot unit always rotates around a center of rotation along an arc.