Abstract: Provided is a movable electro-hydraulic composite drive spraying robot with a large working space, comprising movable bases, there being a plurality of movable bases cooperatively arranged for bearing a drive rope adjustment module, profile supporting columns in the driving rope adjusting module respectively being fixed on the movable bases, the plurality of movable bases encircling an operating space, a adjustable auxiliary motion platform that is movable being erected in the operating space, a rotary motion platform being arranged below the adjustable auxiliary motion platform, the adjustable auxiliary motion platform and the rotary motion platform being connected by means of a hydraulic push rod, the bottom end surface of the rotary motion platform being provided with a spray gun, and a balance mechanism and a fixed support mechanism for balancing the traction force of the rope and maintaining the balance of the mechanism also being mounted on the movable bases.

Abstract: A split-type friction stir welding head with an adjustable stirring pin length includes a stirring head housing, where a clamping handle and a detachable stirring pin are successively mounted in the stirring head housing towards a welding direction, the clamping handle is provided with external threads on a periphery thereof and in drive connection with an adjusting plate through threads, the adjusting plate is limited, fixed and mounted in the stirring head housing, and a pore-diameter-adjustable aperture shoulder is mounted between a bottom of the stirring head housing and the detachable stirring pin in order to compensate for an outside gap between a stirring pin channel of the stirring head housing and the detachable stirring pin.

Abstract: A stability control method for a virtual synchronous generator (VSG) in a strong grid based on an inductance-current differential feedback is provided. A grid-connected topological structure of a VSG using the control method includes a direct-current (DC)-side voltage source, a three-phase inverter, a three-phase grid impedance and a three-phase grid. By controlling the VSG and controlling the inductance-current differential feedback, the method suppresses the oscillation of the output power from the VSG in the strong grid and implements the stable operation of an inner-loop-free VSG in the strong grid, without adding the physical inductance, increasing the cost of the filter and additionally providing a grid-side current sensor.

Abstract: A shoulder-angle-adjustable friction stir welding head suitable for a fillet joint includes a stirring head body. A front end of the stirring head body is mounted with a movable shoulder, a stirring pin channel is arranged on the movable shoulder, and the stirring pin channel may allow a stirring pin of the stirring head body to pass through. The present disclosure can respond to welding tasks of the fillet joint of different angles and enlarges an application scope of the friction stir welding head in a manner that the front end of the stirring head body is mounted with the movable shoulder, the stirring pin channel is arranged on the movable shoulder, the stirring pin channel is used for allowing the stirring pin of the stirring head body to pass through, and the angle of the movable shoulder is adjusted.

Abstract: Disclosed is an automatic identification and classification production line for waste mobile phones and a classification method of waste mobile phones.

Abstract: The embodiment of the present disclosure discloses a method, an electronic device, and a storage medium for a ship route optimization. The method for the ship route optimization considers a dynamic feature of a multi-functional emergency rescue ship and an interference effect caused by an airflow, uses a movement model with kinematics non-holonomic constraints, such as a ship total cost assessment function to simulate the movement of the ship, and based on a sparrow search algorithm, learns how to apply the algorithm to a route plan of the emergency rescue ship. The method can improve the ship route optimization algorithm, improve an accuracy and practical applicability of a calculated plan. The method can effectively and accurately locate obstacles and hidden reefs, and consider effects of an airflow and a non-holonomic constraint effect, so as to make the route planning of the ship more efficient and intelligent.

Abstract: Disclosed are a preparation method for manganese-doped red phosphor, a device and a backlight module including the product. The method includes: 1) mixing A2BF6 polycrystalline particles with mill balls; 2) mixing A2BF6 powder obtained after ball-milling with a hydrofluoric acid for secondary crystallization; 3) filtering out solid particles in A2BF6 and hydrofluoric acid solution after the secondary crystallization; 4) performing ion exchange between A2BF6 particles and A2BF6; and 5) filtering out solid particles to obtain a filter cake, and performing drying treatment to obtain manganese-doped red phosphor.

Abstract: A traffic information quantization method in an intelligent network environment includes: step S1: extracting traffic information sources according to collected videos and classifying the traffic information sources; step S2: obtaining a state set and a probability distribution of each traffic information source through actual observation and calculation; step S3: using information theory to quantify the traffic information sources. Further, a traffic information quantization system in the intelligent network environment is provided, and the traffic information quantization method in the intelligent network environment and its system are adopted to quantify the driving information of the driving process and calculate the amount of information. The method and system can transform uncertain information into certain information, improve driving efficiency, help drivers optimize the driving process, and ensure driving safety.

Abstract: The present disclosure relates to an electromagnetic stamping method and an electromagnetic stamping device. The electromagnetic stamping method includes: dividing a blank holder of a stamping device into a plurality of blank holder areas based on a contour characteristic of a workpiece to be stamped; setting a blank holder force function over time for each blank holder area based on a shape characteristic of the blank holder area; collecting blank holder force data of each blank holder area every cycle period t0, and calculating an error between the blank holder force data and a value of the blank holder force function at a current time; and controlling a blank holder force for each blank holder area based on the error, and obtaining the workpiece to be stamped by stamping sheet material under the blank holder force.

Abstract: An anti-biofouling shape-memory composite aerogel includes a unidirectional chitosan aerogel channel, a plant polyphenol coating, and a polyphenol/iron ion chelate. The plant polyphenol coating is evenly distributed on an inner wall of the unidirectional chitosan aerogel channel, and the polyphenol/iron ion chelate is located at a top end of the unidirectional chitosan aerogel channel. The anti-biofouling chitosan-based composite aerogel has an evaporation rate of 1.96 kg·m?2·h?1 at an illumination intensity of 1 kW/m2. The composite aerogel has shape-memory properties, and can quickly restore its original shape in water after extrusion, thereby accelerating the diffusion of substances to complete the modification of inner channels. In this way, desirable anti-biofouling ability is achieved, and excellent structural stability as well as continuous and efficient photothermal water evaporation are guaranteed in a complex water environment.

Abstract: A method for monitoring an online state of a bonding wire of an Insulated Gate Bipolar Translator (IGBT) module comprises the following steps: Step 1, constructing a full bridge inverter circuit and an online measuring circuit and connecting two input ends of the online measuring circuit to a collecting electrode and an emitting electrode of an IGBT power module of the full bridge inverter circuit to realize a connection of the full bridge inverter circuit and the online measuring circuit; Step 2, establishing a three-dimensional data model of a healthy IGBT; Step 3, establishing a three-dimensional data model of the IGBT with a broken bonding wire; Step 4, optimizing a least squares support vector machine by adopting a genetic algorithm; and Step 5, estimating states of the three-dimensional data models obtained in the Step 2 and the Step 3 by utilizing the optimized least squares support vector machine.

Abstract: A method for performing lower limb rehabilitation training comprises the steps of: (a) placing a training object's feet on a pedal in a limb rehabilitation training system, wherein the pedal comprises a pressure sensor and a location information sensor; (b) standing stably on the pedal to enable the pressure sensor on the pedal to record the body weight of the training object; and (c) sitting down on the saddle, thereby enabling: the pressure sensor on the pedal to monitor pressure variation between the training object and the pedal throughout the training of the training object, wherein the rehabilitation evaluating unit evaluates the physical status and rehabilitation status of the training object according to the physiological information and exercise information of the same collected by the sensing unit, and adjusts the exercise frequency and the exercise duration of the training object according to the physical status.

Abstract: A meat preservation apparatus and method allowed to broaden the ice temperature are provided. The second conveyor mesh belt is equipped with an ice temperature device, the right end of the second conveyor mesh belt is equipped with an ice temperature device, the ice temperature device comprises a base, a spinning disk is arranged above the base, and four moving plates that can move inside and outside are evenly arranged above the spinning disk, two first linear actuators are vertically arranged above each moving plate, an ice temperature box can move up and down between the two first linear actuators, conveyor belts are arranged in the ice temperature box, and the conveyor belts are driven by the first motor, a box door is set on an outside of the ice temperature box, and the box door is driven by a second motor.

Abstract: A mapping method for right-turn conflict warning lines at urban road intersections includes: obtaining the conflict data of urban intersections and the driving trajectory information of large vehicles and obtaining the outermost rear wheel trajectory curve and the innermost rear wheel trajectory curve through the driving trajectory information of large vehicles; using the regression model to construct the dynamic model of the right-turn conflict area of large vehicles and obtain the relationship between the parameters of the outermost rear wheel trajectory curve and the innermost rear wheel trajectory curve and the dynamic and static indexes; inputting the dynamic and static indexes of other road intersections into the dynamic model of the right-turn conflict area of large vehicles to obtain the corresponding outermost rear wheel trajectory curve and the innermost rear wheel trajectory curve, and drawing the urban road warning line.

Abstract: A method suitable for driver takeover training of man-machine shared driving vehicle relates to the field of man-machine shared driving technology. The method includes: establishing database, situation-creation, establish a teaching model, take over training, evaluation and analysis of takeover ability. The method divides the driver's takeover behavior into a small operation action through the driver takeover training of the man-machine shared driving vehicle, defines where the driver's eyes need to observe when the takeover reminder appears, how the hands and feet need to be operated, and the sequence of these operations, solves the problems of the driver's tension and being in a flurry in the current sudden takeover reminder. In addition, through the evaluation and analysis of the takeover capability, the method can solve the problem that the existing technology cannot objectively evaluate the driver's takeover capability level.

Abstract: A 5-bromoquinazoline derivative (I), structural formula thereof is as follows: the synthesis method thereof comprises weighing 1.18 g of 5-bromoisatin, 2.5503 g of ammonium formate and 100 ml of absolute methanol in a 250 mL round-bottom flask, heating, stirring and refluxing for 48 h, stopping reaction, rotating to obtain 1.6033 g of filter residue crude product, carrying out column chromatography separation by using dichloromethane and absolute methanol according to a volume ratio of 1:1, and obtaining a target crystal compound I; the application of the 5-bromoquinazoline derivative compound crystal (I), as a catalyst has a good catalytic effect in nitrile silicification reaction of benzaldehyde and auto-polymerization reaction of benzophenone hydrazone, the conversion rates thereof respectively reach 39% and 76%, and the crystal (I) can be used as an anti-cancer reagent which has certain anti-cancer activity of breast cancer, liver cancer and lung cancer.

Abstract: A method for identifying and extracting characterization parameters of recycled concrete sand particles based on deep learning technology is provided. The method integrates image processing method based on deep learning and quickly recognition of recycled concrete sand particles (RCSP), adopts U-Net semantic segmentation model, develops RCSP data set by inventing a 3D image acquisition platform equipment of recycled concrete sand, in which two CCD industrial cameras are used to collect original multi-dimensional images of the moving RCSP synchronously in the same frame. Secondly, data sets are separated into training set and verification set by 4:1, in which training set are first used to train the U-Net semantic segmentation model to quickly identify the recycled concrete sand, during this process the best training parameters of U-Net semantic segmentation model are determined. Finally, the verification sets are adopted to validate the training model.

Abstract: A salty taste enhancing peptide derived from dry-cured ham is provided, and the amino acid sequences thereof are Asp-Leu; Phe-Met-Ser-Ala-Leu-Phe, as shown in SEQ ID NO: 1; and His-Val-Arg-Arg-Lys, as shown in SEQ ID NO: 2. The salty taste enhancing peptide in the present disclosure is of small molecular weight, features easy separation and purification, has strong salty taste enhancing effect and simple sequences, and is easy to synthesize, therefore, the salty taste enhancing peptide can be applied to the fields of food, health products, medicine and biology, and is expected to replace salt substitute products currently available on the market.

Abstract: The present disclosure provides a method for determining a stability criterion for a control loop of a grid-connected converter under a weak grid condition, and belongs to the field of power control. The method includes performing a sampling, obtaining an expression of a transfer function of each of control loops of a grid-connected converter, further obtaining an expression of a transfer function for indicating stability performance of the system, obtaining an amplitude expression and a phase expression according to the transfer function, and providing a stability criterion for the control loop of the grid-connected converter under a weak grid condition and a stability margin expression of the system. The stability criterion for the control loop is significant and provided by a simple method, can quickly and accurately determine the stability of the grid-connected converter system under the weak grid condition, and is helpful for the parameters design of the controllers.

Abstract: The present application discloses a QoE-based adaptive acquisition and transmission method for VR video, comprising the following steps: 1, capturing, by respective cameras in a VR video acquisition system, original videos with the same bit rate level, and compressing each original video with different bit rate levels; 2, selecting, by a server, a bit rate level for each original video for transmission, and synthesizing all of the transmitted original videos into a complete VR video; 3, performing, by the server, a segmentation process on the synthesized VR video, and compressing each video block into different quality levels; and 4, selecting, by the server, a quality level and an MCS scheme for each video block according to real-time viewing angle information of users and downlink channel bandwidth information in a feedback channel, and transmitting each video block to a client.