25results about How to "More difficult to avoid" patented technology

The invention relates to the technical field of material fatigue prediction, in particular to a material fatigue prediction method and system based on a physical guidance neural network, and the method comprises the steps: obtaining mechanical response data and material microstructure feature data in a material cyclic loading process; based on the mechanical response data and the material microstructure feature data, constructing a physical guidance neural network model; the method comprises the following steps: a) acquiring fatigue damage parameters through a physical constraint unit by utilizing a physical guidance neural network model; b) incorporating microstructure characteristics of the material into a fatigue damage evolution equation through an attention layer; c) quantizing the uncertainty of the fatigue damage evolution equation through an uncertainty quantization unit; d) obtaining a prediction result through a feature mapping unit; the prediction result is subjected to uncertainty quantification through the prediction unit, a final material fatigue prediction result is obtained, material mechanics knowledge is introduced into the neural network through the physical constraint unit, and it is ensured that the prediction result conforms to the basic physical law.

The invention discloses a mechanism model parameter iterative optimization method based on data and a neural network, and the method comprises the steps: constructing a mechanism model based on existing experience, analyzing and selecting key optimization parameters of the model, and constructing an initial parameter value model as a to-be-optimized model; secondly, collecting state data such as a flight path of the aircraft, and preprocessing the state data; thirdly, a parameter iterative optimization model is constructed through intelligent optimization algorithms such as a neural network algorithm, training is conducted through the preprocessed data, the simulation result of the mechanism model is made to be gradually close to actual data, and finally the optimized aircraft mechanism model is obtained. According to the method, the advantages of mechanism modeling and neural network modeling are fused, and mechanism model iterative optimization under mechanism and data hybrid driving is realized.

The invention relates to the technical field of automobile part processing, in particular to a composite motor end cover which comprises a cover body and a sealing plate, the cover body is provided with a front cavity, a shaft penetrating hole and a back cavity, the shaft penetrating hole is provided with an upper preset groove and a lower preset groove, an upper oil storage box is installed in the upper preset groove, and a lower oil storage box is installed in the lower preset groove. A first inflow hole and a second inflow hole are formed in the upper preset groove, a first overflow hole and an overflow hole are formed in the lower preset groove, drainage pipes are inserted into the first inflow hole, the second inflow hole, the first overflow hole and the second overflow hole, a driven ring body is installed on the inner side of the shaft penetrating hole, and a vertical moving frame is installed on the lower oil storage box. The lower end of the vertical moving frame is fixedly connected with a piston rod of which the lower end is connected with a piston disc; the circulating oil channels are formed at different angles of the cover body, so that the bearings in the bearing chambers are fully lubricated and cooled, and the heat dissipation efficiency of the motor end cover is improved; the invention also provides a processing technology of the composite motor end cover.

The invention provides a post-evaluation method for an asphalt pavement maintenance technology of an operating road, and relates to the technical field of road maintenance evaluation. Establishing an adaptive weight calculation model based on machine learning, and calculating a weight vector of each index; performing economic benefit quantitative evaluation according to an arc tangent decay model, and determining an economic benefit-cost ratio; performing qualitative evaluation by adopting a success degree method, establishing a grading evaluation system, and forming a standardized evaluation grade table; establishing a comprehensive evaluation system, and generating a fusion evaluation matrix; calculating a comprehensive evaluation vector, constructing a comprehensive evaluation matrix, calculating a comprehensive evaluation result based on the comprehensive evaluation matrix, determining a final evaluation grade, and obtaining a final evaluation result after maintenance. According to the method, a set of complete post-maintenance evaluation method is established by constructing a multi-dimensional evaluation index system and combining a qualitative and quantitative evaluation method, standardization and normalization of the evaluation process are realized, and scientificity and reliability of an evaluation result are improved.

The invention provides an optimal scheduling method for a wind power and pumped storage combined operation system. The method comprises the following steps: solving a decision model based on a real-time data set and a risk preference coefficient to obtain a decision value set comprising an electric energy market standard, a frequency modulation capacity standard and a frequency modulation mileage standard of a power generation monomer, and scheduling the combined operation system; the objective function of the decision model aims at minimizing the total electricity purchase cost of the electric energy market and the frequency modulation auxiliary service market; the decision-making model is based on a historical data set, and the power market model and the joint operation system model are constructed by adopting multi-agent reinforcement learning and a deep neural network. The method is high in dynamic adaptability and robustness, facilitates improvement of declaration efficiency and result accuracy of the power market, can achieve collaborative scheduling of various energy sources, improves system stability, equipment utilization rate and energy utilization rate, reduces power generation cost and improves power generation benefits. And meanwhile, the coping capacity and the anti-risk capacity of the system for sudden load increase are improved.

The embodiment of the invention provides a fault diagnosis method, device and equipment for a particulate filter and a storage medium. The fault diagnosis method for the particulate filter comprises the steps that the operation condition of an engine is obtained; when the operation condition meets the fault diagnosis condition of the particulate filter, the exhaust volume flow of the engine and the upstream and downstream pressure difference of the particulate filter are obtained; normalizing the exhaust volume flow and the upstream and downstream pressure difference, and calculating an included angle between a connecting line of a data point and an original point in a Cartesian coordinate system after normalization and an X axis; when the included angle is smaller than a first threshold value, it is judged that the particle trap has a removal fault; wherein the X axis of the Cartesian coordinate system corresponds to the exhaust volume flow, and the Y axis corresponds to the upstream and downstream pressure difference. By adopting the technical scheme, the universality and the accuracy of the fault diagnosis strategy of the particulate filter are improved, and the problem that the diagnosis strategies of a traditional fuel vehicle and a hybrid vehicle are difficult to unify is solved.

The utility model is suitable for the technical field of cattle breeding, and provides a mating and delivery integrated environment-friendly breeding cowshed which comprises a cowshed body fixedly provided with a fence. The supporting columns are fixedly mounted in the cowshed body; the movable plate is fixedly arranged on the supporting column and is arranged in the fence; the water storage tank is fixedly mounted outside the cowshed body; the connecting pipe is fixedly mounted at the bottom of the water storage tank; the three-way pipe is fixedly mounted on the connecting pipe; the liquid discharging pipe is fixedly installed on the three-way pipe and extends into the cowshed body, and the other end of the liquid discharging pipe is arranged between the movable plate and the ground; and the valve is fixedly mounted on the liquid discharge pipe. The hybridization and delivery integrated environment-friendly breeding cowshed is convenient to clean, the cowshed can be kept clean and tidy, and bacterium breeding is prevented.

The present invention belongs to the technical field of oil and gas pipeline repair, and discloses a steel epoxy sleeve top-in and top-out filling device, including a sleeve and a filling device, the filling device including a feed assembly, a vacuum connecting pipe, a buffer tank and an exhaust assembly; a buffer tank is obliquely arranged above the sleeve, and the buffer tank and the sleeve are connected through at least two vacuum connecting pipes; the discharge port of the feed assembly is connected to the feed port of the sleeve, and the feed port of the sleeve is arranged adjacent to the vacuum connecting pipe with the lowest height; the exhaust assembly is connected to the high end of the buffer tank; and a steel epoxy sleeve top-in and top-out filling method is also disclosed. The present invention solves the problem that bubbles in the filling material are difficult to eliminate when repairing the steel epoxy sleeve by the existing filling method, and avoids the disturbance of the filling material during feeding due to too small a space, and can replenish the cavity formed when the filling material in the sleeve is cured and shrunk from the buffer tank and the vacuum connecting pipe.

The utility model discloses an automatic water drainage mechanism of an engine filter, which comprises a plastic package shell connected with a filter element of the filter and an electromagnetic switch arranged in the plastic package shell, a water channel is arranged on the side of the plastic package shell, the plastic package shell is connected with a water drainage piece, and the water drainage piece is provided with a water accumulation cavity communicated with the water channel. A water drainage pipe communicated with the water accumulation cavity is arranged at the bottom of the water accumulation cavity, the electromagnetic switch is located above the water drainage pipe, and a movable iron core of the electromagnetic switch downwards penetrates into the water accumulation cavity and can seal the water drainage pipe. The electromagnetic switch is powered on to generate magnetic force to drive the movable iron core to move upwards, the movable iron core opens the drainage pipe, accumulated water at the bottom of the filter element of the filter flows into the water channel of the plastic package shell under the action of the gravity of the accumulated water, then flows into the accumulated water cavity of the drainage piece and is drained out through the drainage pipe, and therefore one-key automatic drainage of the filter is achieved.

The invention discloses an improved BSIM parameter extraction method based on Dueling DQN, and aims to improve the efficiency and accuracy of parameter extraction in semiconductor device modeling, TCAD simulation data and WAT measurement data are used in the parameter extraction process, parameters related to channel length, width, current and capacitance are extracted, the BSIM parameter extraction problem is modeled as a Markov decision process, and the efficiency and accuracy of parameter extraction in semiconductor device modeling are improved. The method comprises the following steps: establishing a Dueling DQN network model and performing model training, calculating a target Q value and loss, and updating network parameters of the Dueling DQN; in the training process, root-mean-square error values are calculated, invalid actions are removed, even and odd action pairs are processed, sorting is carried out according to the difference of the root-mean-square error values, and converged BSIM parameter values are obtained through model convergence. According to the method, convergence can be carried out in a preset error range, and the efficiency and the accuracy of BSIM parameter extraction are remarkably improved.

The invention relates to the technical field of rare earth metal electrolysis cathode protection coatings, in particular to an in-situ generated rare earth oxide diffusion barrier layer on the surface of a tungsten cathode. According to the method, fused salt electrodeposition and sol chemical deposition are combined, and a composite diffusion barrier layer of an yttrium tungstate binding layer / yttrium oxyfluoride barrier layer is constructed on the surface of a tungsten cathode in situ; the method comprises the following steps: firstly, enabling sodium tungstate to react with yttrium fluoride in fused salt through electro-deposition, and generating a compact and firmly combined yttrium tungstate layer on a tungsten substrate in situ; and then a compact surface layer of multiple yttrium oxyfluoride layers is constructed on the surface of the tungsten cathode by adopting a sol-gel method, strong interface bonding is realized by utilizing an in-situ reaction, surface hole sealing is realized by utilizing the densification characteristic of yttrium oxyfluoride, finally, a composite protection structure is formed, and the high-temperature oxidation resistance and molten salt corrosion resistance of the tungsten cathode are remarkably improved.

The present invention discloses a device, method and system for full migration of heterogeneous databases, and relates to the technical field of database migration. The device includes a scheduling management end and an executor, and provides scheduling management services through the xxl-job scheduling management end; the executor includes an ETL tool for performing data migration from a source database to a target database; the scheduling management end includes a migration task acquisition module and a migration task scheduling module; the migration task acquisition module collects database migration task information for the source database and the target database, and the database migration task information includes the configured JobHandler information of the xxl-job for table migration; the migration task scheduling module adds the JobHandler as a scheduling task, and selects the target executor from the executor cluster according to the routing strategy to perform the migration of the table structure and table data. The present invention effectively solves the problem of full migration of heterogeneous databases.

This utility model discloses a residual liquid recovery device for 1,4-butanediol production, comprising a hollow main shaft with a through-cavity inside. The hollow main shaft is vertically inserted into the bottom of the inner cavity of a reactor. A set of blades is fixedly installed on the upper part of the main shaft, located at the bottom of the inner cavity of the reactor. The top of the hollow main shaft is rotatably mounted in a support frame. A one-way valve and a cleaning ball are sequentially installed on the top of the hollow main shaft. The bottom end of the hollow main shaft is connected to the end of a water inlet pipe via a rotary joint. The residual liquid recovery device for 1,4-butanediol production provided by this utility model can solve the problem of residual liquid deposition and discharge difficulties, ensuring that the residual liquid can be smoothly and completely discharged from the drain pipe.

The utility model discloses a kind of dual-lamp control device and camera equipment.The dual-lamp control device includes control chip, sensing module, first light module and second light module;The sensing module is electrically connected with the control chip, for outputting sensing signal to the control chip;The first light module includes first drive circuit and first lamp group, and the first drive circuit is electrically connected with the control chip and the first lamp group;The second light module includes second drive circuit and second lamp group, and the second drive circuit is electrically connected with the control chip and the second lamp group;The control chip is electrically connected with the first drive circuit and the second drive circuit.Solve the problem that in prior art, in low-light environment, lighting effect guarantee and equipment power consumption control are difficult to take into account.

The invention belongs to but is not limited to the technical field of electrochemical containers, and particularly relates to a double-hybrid electrochemical capacitor and a preparation method thereof, the double-hybrid electrochemical capacitor comprises a hybrid positive electrode and a hybrid negative electrode, and the hybrid positive electrode and the hybrid negative electrode simultaneously comprise two energy storage mechanism active materials of double-electric-layer electrostatic energy storage and Faraday quasi-capacitance energy storage. An active material of the double-electrode-layer electrostatic energy storage mechanism is open-pore activated carbon, the port aperture of the open-pore activated carbon is smaller than or equal to 0.2 nm, and the pore web size is 1-1.5 nm. In the manufacturing process of the capacitor, the electrochemical principle is utilized, the positive electrode and the negative electrode are subjected to electrochemical hybridization design at the same time, on one hand, the upper limit of the working voltage of the electrochemical capacitor is increased to 4.4 V from 2.7 V through introduction of a Faraday quasi-capacitor energy storage mechanism active material at the positive electrode end, and therefore effective energy storage of the capacitor is greatly enhanced; the volume energy density is greatly improved; and on the other hand, high-power output characteristic matching of the system is simultaneously introduced and maintained at the positive electrode end and the negative electrode end through a double-electric-layer electrostatic energy storage mechanism active material.

The invention discloses a transmission feeding and alternating sorting device for a medium-sized paper bag machine, and the technical scheme is as follows: it comprises a machine body, and a feeding mechanism is arranged on the top of the machine body; the feeding mechanism comprises a feeding table, one side of the feeding table is fixedly connected with a conveying table, one side of the conveying table is fixedly connected with a pushing table, a feeding mechanism is arranged on the top of the feeding table, a conveying mechanism is arranged on the top of the conveying table, and a dialing mechanism is arranged on the top of the pushing table. The transmission feeding and alternating sorting device for a medium-sized paper bag machine has the following beneficial effects: the soft paper is fixed by arranging a clamping plate on the top of the feeding table, and the clamping and sending components and the blocking sleeve are arranged, so that the soft paper can be effectively fixed in a modular manner, thereby effectively fixing the soft paper when feeding, and effectively solving the problem that some soft paper is relatively light and thin and is easily scattered during the transmission process, thereby causing the soft paper to be difficult to sort and automatically feed.

The utility model discloses a desulfurized calcium powder ore pulverizer capable of multi-stage pulverizing, and relates to the technical field of desulfurized calcium powder ore processing, the desulfurized calcium powder ore pulverizer comprises a grinding box, the top of the grinding box is fixedly connected with a pulverizing box, the top of the pulverizing box is fixedly connected with a feed hopper, the right end of the pulverizing box is provided with a crushing and grinding mechanism, and the right end of the pulverizing box is provided with a feeding hopper. A mounting base is arranged on the right side of the crushing and grinding mechanism, a knocking mechanism is arranged on the upper side, close to the discharging port, of the front face of the grinding box, a U-shaped frame is fixedly connected to the lower side, close to the discharging port, of the bottom of the front face of the grinding box, and a collecting box is slidably connected to the inner wall of the U-shaped frame; second grinding assemblies are arranged on the left side and the right side in the grinding box correspondingly. Desulfurized calcium powder ore is preliminarily crushed and ground through the rotating roller and the crushing tooth block, and then the grinding roller rotates along the arc-shaped plate, so that the grinding balls further grind larger particles in the ore.

The utility model relates to the technical field of manufacturing of medical instruments, in particular to a device for taking out an anchoring positioning needle of a puncture positioning device, which is reasonable in structure, simple and convenient to operate and capable of remarkably improving the taking out efficiency and success rate of the anchoring positioning needle of the puncture positioning device, and is characterized by being provided with a round-tube-shaped positioning rod, and a positioning rod head is arranged at the front end of the positioning rod; the head of the positioning rod is in a conical cylinder shape, the positioning rod is sleeved with the needle tail guide sleeve, the needle tail guide sleeve is provided with a sleeve-shaped body, the outer wall of the front end of the positioning rod is provided with an annular protrusion to prevent the needle tail guide sleeve from being separated from the positioning rod, the rear end of the positioning rod is connected with the handle, and a hollow pipe cavity coaxial with the positioning rod is formed in the handle. The device for taking out the anchoring positioning needle of the puncture positioner is simple in structure and convenient to use, and therefore the problem that the anchoring positioning needle of the puncture positioner is difficult to take out in an operation at the present stage is solved.

The present invention discloses an offline data generation method for highway field digital collection, S1. Utilize a message queue to listen to a user's offline data generation request; S2. Start a data processing process; S3. Perform format conversion and preprocessing on the acquired data resource file; S4. Perform topology check and repair, including detecting polygon overlap and boundary missing topology errors, and repairing the topology errors to make the topological relationship of GIS data correct; S5. Select an adaptive output format according to the data scale; S6. Use curl command or other API request methods to configure map publishing parameters, complete map publishing, and obtain an online preview link; S7. Determine the download range of map tiles, download vector tile data to the local; S8. Pack the locally downloaded vector tile data into MBTiles format for use by Web terminals and mobile applications. The present invention solves the problems of inefficient data processing, inconsistent formats, and insufficient topology repair capabilities in the prior art.

The utility model relates to the technical field of machine tool automation, in particular to a self-centering clamping rotating clamp which comprises an outer sleeve, a rotating ring, a clamping block, a plug screw, a blocking rod, a shifting rod, a tension spring and a fixing bolt, the outer sleeve is made of a cylinder or a hexagon, and the end face of the outer sleeve is provided with equally-divided threaded holes, a threaded hole for fixing the tension spring and a central round hole. Threaded holes are formed in the side face of the outer sleeve, and the outer sleeve is formed by turning, milling and grinding steel and conducting heat treatment. According to the device, the problem that the automation unit is difficult to use during production changing can be solved, operators do not need to have professional skills, only proper workpieces need to be matched according to the compatible range of the rotating clamp, coordinates do not need to be adjusted during production changing, parts of the rotating clamp do not need to be adjusted, and true universality and practicability are achieved.

The invention relates to the technical field of sewage treatment equipment, and particularly discloses a sewage treatment device for waste plastic recycling, which comprises a tank body, a liquid inlet, a liquid outlet and a vacuum pump I. A partition plate I is arranged in the tank body, a degassing cavity I is formed between the top of the tank body and the partition plate I, and the vacuum pump I is used for vacuumizing the degassing cavity I; a second degassing cavity is formed between the bottom of the tank body and the first partition plate, the tank body is provided with a second vacuum pump used for vacuumizing the second degassing cavity, the first partition plate is provided with a circulating groove used for communicating the first degassing cavity with the second degassing cavity, and a communicating mechanism is installed in the circulating groove and comprises an impeller used for blocking the circulating groove and a driving assembly. The impeller is rotationally matched with the partition plate I, and the driving assembly drives the impeller to rotate and pushes liquid in the degassing cavity I to flow into the degassing cavity II; the sewage treatment device for waste plastic recovery has the effect of improving the liquid degassing efficiency.

This invention discloses a method, system, and device for transferring the status of a support device at different locations during radiotherapy, relating to the field of medical radiotherapy technology. The method includes: generating a baseline status dataset; verifying whether the support status during CT positioning matches the baseline status dataset; quantifying the overall deviation of the current support status from the baseline status dataset; and using whether the deviation meets the standard as a criterion for allowing beam delivery. This invention solves the problem of inconsistent support status transfer in existing processes by digitizing the mechanical status of the support device and performing mandatory verification at each key stage.

The application discloses a synchronization method and system of an ARP forwarding table, a storage medium and an electronic device, wherein the method is applied to a master switch in a stacked system with N switches, and comprises the following steps: obtaining M address resolution protocol (ARP) response messages through a message transceiving channel between a kernel interface of the master switch and a hardware interface of each switch in the N switches, wherein the ARP response message at least carries an internet protocol (IP) address and a media access control (MAC) address of a terminal device sending the ARP response message; the kernel interface of the master switch is a software simulation interface of the hardware interface of the master switch in a network kernel of the master switch; generating an ARP forwarding table according to the M ARP response messages, wherein the ARP forwarding table at least records the IP address and the MAC address of each terminal device connected with the stacked system; and synchronizing the ARP forwarding table to each target switch in the N switches, wherein the target switch is a backup switch or a slave switch in the stacked system.

The invention discloses a spacecraft health estimation and fault-tolerant control method based on hybrid Mama and meta Q learning, is applied to the field of spacecraft health estimation and fault-tolerant control, and relates to a spacecraft health estimation and fault-tolerant control method. The objective of the invention is to solve the problem of low fault-tolerant control accuracy caused by difficulty in consideration of health estimation and fault-tolerant control of an existing spacecraft. The method comprises the following steps: 1, obtaining a rigid spacecraft operation data set; 2, a hybrid HMamba-BCAF health estimation model is constructed; a trained hybrid HMamba-BCAF health estimation model is obtained; and 3, obtaining an operation data sample of the rigid spacecraft to be detected, inputting the operation data sample of the rigid spacecraft to be detected into the trained hybrid HMamba-BCAF health estimation model to output a health estimation result, and performing control compensation on the health estimation result based on a fault-tolerant control method.

The invention discloses a double-preview multi-mode steering control method for a multi-axis distributed electric drive vehicle, which comprises the following steps of: calculating an expected vehicle speed from two aspects of curvature adaptation and angle adaptation by adopting two strategies, and determining the expected vehicle speed by utilizing a double-target vehicle speed decision model; obtaining an ideal vehicle coordinate and an ideal navigation angle by using an existing path planning algorithm; inputting the expected vehicle speed, the ideal vehicle coordinates and the ideal navigation angle into a dynamic double-preview-point algorithm to obtain a steering angle and a driving force; a steering mode is dynamically selected according to road conditions or instructions, steering angle control is executed according to the steering mode, and the steering mode comprises a steering mode around a rear axle, a center steering mode and a crab-shaped steering mode; and performs control based on the driving force. According to the method, the transverse error of the rear axle in the long-body vehicle is controlled within an extremely small range, the turning radius is reduced, the automatic driving robustness and safety of a large transport vehicle in complex scenes such as narrow roads and continuous curves are remarkably improved, and the method is suitable for six-axle and more than six-axle distributed electrically-driven heavy-load vehicles; the technical problems that the head and the tail are difficult to consider during turning of the large transport vehicle and the trafficability is poor are effectively solved.