43results about How to "Solve the speed problem" patented technology

The embodiment of the invention provides a TCP (Transmission Control Protocol) congestion control method, device, equipment, medium and product, and relates to the field of computer networks, the method comprises the following steps: taking a bandwidth upper limit as a core constraint benchmark, combining the core constraint benchmark with smooth RTT and effective MSS to calculate a corresponding congestion window upper limit, and accurately regulating and controlling the congestion window through layered window constraint, so that the congestion control efficiency is improved. It is ensured that a congestion window always adapts to network transmission characteristics and resource allocation requirements, congestion caused by too large windows or resource waste caused by too small windows is avoided, meanwhile, the rhythm sending rate is calculated based on the bandwidth upper limit, the rhythm sending rate of a current application is dynamically updated through double judgment of a change rate threshold value and a minimum updating interval, and the user experience is improved. The real-time adaptation of the rhythm sending rate and the bandwidth upper limit is realized, the problem of insufficient collaboration of window adjustment and rate control in the prior art is solved, network resources are fully utilized while excessive sending is avoided and the transmission stability is guaranteed, and the TCP congestion control efficiency is improved.

This application provides a motor load adaptive adjustment method based on analog circuits, relating to the field of motor control technology, including the following steps: converting the load current in the motor circuit into a first voltage signal, and generating a mode selection signal based on the amplitude and rate of change of the signal; wherein, when the amplitude of the first voltage signal exceeds a first threshold and its rate of change exceeds a second threshold, the mode selection signal indicates a dynamic response mode; otherwise, the mode selection signal indicates a steady-state adjustment mode; when the indication is a steady-state adjustment mode, the first voltage signal is introduced into a first path, which includes a first error amplifier with a first proportional coefficient; when the indication is a dynamic response mode, the first voltage signal is introduced into a second path, which includes a second error amplifier with a second proportional coefficient greater than the first proportional coefficient; generating and outputting a motor drive signal according to the adjustment signal output from the selected path.

This invention relates to the field of asynchronous motor control technology, specifically to an asynchronous motor speed control method and system based on an improved Super-Twisting sliding mode algorithm. The method includes: (1) deriving the fourth-order nonlinear differential equation of a three-phase squirrel-cage asynchronous motor in a rotating coordinate system d-q based on rotor magnetic field orientation theory; (2) designing a linear sliding surface based on the error between the set speed and the feedback speed; (3) using the first-order differential equation of rotor speed in step (1) and the linear sliding surface described in step (2), and introducing a variable proportional differential term based on the traditional Super-Twisting sliding mode algorithm to design a fast Super-Twisting sliding mode speed controller; (4) constructing a variable exponential switching function to replace the sign function in the fast Super-Twisting sliding mode speed controller described in step (3), thus completing the design of the improved Super-Twisting sliding mode speed controller. This solution effectively solves the problems of slow response speed and poor control accuracy in existing systems, thereby improving the overall robustness of asynchronous motor control.

This invention relates to the field of power electronics technology, specifically to a switching relay control circuit and control method. The switching relay control circuit includes a signal control module, a power drive module, and a protection module. The signal control module receives an input control signal and outputs a drive signal. The power drive module responds to the drive signal by applying a first voltage to the relay coil to activate it, and automatically reduces the first voltage to a second voltage to maintain the activated state after activation. The second voltage is higher than the relay release voltage. The protection module provides unidirectional protection and voltage clamping for the circuit. This invention enables rapid and reliable relay activation, significantly reduces holding power consumption, and improves the circuit's anti-interference capability.

The utility model relates to a grassland excrement collecting shovel which comprises a bucket, a bucket connecting part used for being connected with a driving mechanism is arranged on the bucket, idler wheels are arranged on the two sides of the bucket, a first positioning part and a second positioning part are arranged on a side plate of the bucket, and the idler wheels are detachably connected with the first positioning part or the second positioning part through a lifting assembly. When the lifting and placing assembly is connected with the first positioning part, the idler wheel is contained on the side of the bucket, and when the lifting and placing assembly is connected with the second positioning part, the lower end position of the idler wheel is lower than the bottom of the bucket. When animal waste is collected, the rolling wheel is connected with the first positioning part, the rolling wheel is stored on the side of the bucket, the bucket driving mechanism drives the bucket to drag, and an opening of the bucket faces the advancing direction of the bucket so as to shovel the animal waste. When the animal waste is transported, the roller is connected with the second positioning part, and the bucket moves through the roller to avoid continuously shoveling the animal waste.

This utility model relates to the field of machine tool processing technology, specifically to a heat dissipation vortex tube for an ultra-low temperature micro-volume environmentally friendly cooling system; it includes a heat dissipation valve body, a distribution network, a vortex tube, a vortex seat, a distribution valve, a seat nut, an air inlet connector, a regulating valve, and a silencer; the vortex tube is threadedly connected to the heat dissipation valve body, the vortex seat is fixedly connected to the vortex tube, the distribution valve is fixedly connected to the vortex tube, the seat nut is threadedly connected to the vortex seat, the air inlet connector is threadedly connected to the vortex seat, the regulating valve is threadedly connected to the heat dissipation valve body, and the silencer is threadedly connected to the heat dissipation valve body. This allows the vortex tube assembly to generate ultra-low temperature compressed gas more quickly even at higher ambient temperatures, thereby meeting the need for rapid cooling of the high heat generated during machine tool cutting, ensuring the machining accuracy of the machine tool, significantly improving tool life, reducing cooling smoke, and significantly improving the workshop production environment.

The application relates to a hybrid inverter parallel-off-grid switching device and a switching switch device, the switching switch device comprising a relay, a shutdown module, a first starting module, a second starting module, a switching control module and a control module, the relay being connected with the shutdown module, the first starting module, the second starting module and the switching control module respectively, and the switching control module being further connected with the control module and the second starting module respectively. The switching switch device is applied to the hybrid inverter parallel-off-grid switching device, the relay can be quickly shut down through the shutdown module of the switching switch device, the disconnection speed of the hybrid inverter when quickly switching to the energy storage power supply mode during power grid failure is improved, power grid loss is reduced, and the problems of slow disconnection speed and large loss of the existing hybrid inverter when quickly switching to the energy storage power supply mode during power grid failure are solved.

The invention discloses an electric spark machining anomaly classification and recognition method and system, and relates to the technical field of machining anomaly recognition, and the method comprises the following steps: segmenting a continuous signal to obtain discrete signal segments, carrying out the signal extraction of the discrete signal segments to obtain feature data, forming a multi-dimensional feature vector according to the feature data, and carrying out the classification and recognition of machining anomaly. Inputting the multi-dimensional feature vector into a multi-granularity anomaly classifier, outputting coarse-granularity candidate category probability distribution and fine-granularity candidate category probability distribution, and performing calculation based on the coarse-granularity candidate category probability distribution and the fine-granularity candidate category probability distribution to obtain a preliminary anomaly recognition result of the time window; and based on the preliminary anomaly identification result of e time windows, a multi-window verification and state maintenance mechanism is adopted, and a final anomaly category is output, so that the whole process optimization of processing anomaly from rapid early warning and fine classification to reliable decision making is realized, the false alarm and missing report rate is reduced, the system robustness is improved, and the processing safety and quality are finally guaranteed.

The application discloses a method, device, equipment and medium for determining an anode sheath length of an arc model. The method comprises the following steps: in the first step, a first arc root radius is determined according to a current density output by a first arc generation model; in the second step, a second arc root radius is determined according to the first arc root radius and a second arc generation model, wherein an input parameter of the second arc generation model comprises a first anode sheath length; and in the third step, the anode sheath length is determined according to the first arc root radius and the second arc root radius. By determining the anode sheath length, the application is beneficial to solving the problem of slow solving speed and non-convergence of arc model simulation calculation, thereby being beneficial to establishing a more accurate arc simulation model.

The application discloses a data desensitization method, device and system, electronic equipment and a storage medium. The method comprises the following steps: in the case that a row event notification information sent by a disk is received, reading corresponding row data from the disk through a reading thread; and according to subscription information, writing the read row data to a data subscriber through a writing thread, so that the data subscriber performs data desensitization processing on the row data. Through the reading and writing mode of the reading thread and the writing thread, the reading and the writing are completed by different threads, the reading and the writing are separated, and the data reading speed is improved.

The utility model discloses an antioxidant paste preparation device convenient for printing copper products, which relates to the technical field of stirrers and comprises a bottom plate, support columns fixedly connected to two sides of the top surface of the bottom plate, a transmission case fixedly connected between the upper ends of the support columns, a stirring component arranged in the transmission case, and a vacuum component fixedly mounted in the middle of the bottom surface of the transmission case. A lifting assembly is arranged between the lower ends of the supporting columns, and a control cabinet is erected on the ground on one side of the outer side face of each supporting column. Through the planetary transmission structure of the stirring assembly, the execution part can rotate around the center and rotate around the execution part, so that the full stirring and mixing of high-viscosity materials are improved, and the preparation efficiency of copper paste is improved; through cooperation of the vacuum assembly and the lifting assembly, charging and sealed vacuumizing are facilitated, so that bubbles in the materials during stirring are removed, and the preparation quality of the copper paste is improved; finally, the problems of low stirring speed and poor stirring quality of the existing stirring equipment are solved.

The application relates to a forming device for wine yeast cake, and belongs to the field of wine brewing technology. The forming device comprises a machine shell, a forming mechanism installed in the machine shell, and a powder brushing mechanism installed in the machine shell and located at the outlet end of the forming mechanism. The forming mechanism comprises a feeding bin, two spiral conveying rollers oppositely arranged in the feeding bin, a rotary driving piece for driving the two spiral conveying rollers to rotate oppositely, a forming die detachably installed at the outlet end of the feeding bin, and a cutting assembly installed in the machine shell and used for cutting wine yeast. The application has the effect of solving the problems of slow forming speed and different sizes in the prior art.

The application provides a robot precision docking method and system fusing visual guidance and coordinate conversion, and the method comprises the following steps: based on a global coordinate system of a robot, the robot is controlled to move, and a visual detection device carried on an end effector of the robot is positioned to a preset adjacent area of a target docking part; an image containing the target docking part is acquired through the visual detection device; based on processing of the image, motion adjustment instructions of the robot are continuously generated and executed in a closed-loop control mode until a to-be-docked part carried on the end effector is docked with the target docking part. The application solves the problems of low precision and low efficiency in the existing stopcock docking process.

This invention discloses a method and system for steer-by-wire road feel tracking control of commercial vehicles. The method includes: executing multiple control cycles; within each control cycle: acquiring steering state parameters and vehicle motion state parameters during vehicle operation, and reading the estimated road friction capability and feedback torque from the previous control cycle; generating the current road feel target torque; solving the nonlinear state-space model to obtain the estimated road friction capability for the current control cycle; setting the length of the prediction time domain and the control law parameters of the error feedback controller; adaptively allocating the output weights of the two-layer controller, correcting the initial control command, and generating the final control command; and outputting the control command of the current control cycle to the road feel actuator to acquire the feedback torque. This invention can improve the road feel tracking accuracy and operating condition adaptability of commercial vehicles.

The application discloses a few-view neural radiance field optimization method and system based on an object pose probe, the neural radiance field problem without pose prior is extended to scene reconstruction, an object in the scene is selected as a pose probe, a template prior is provided for the shape of the selected object, and a morphing network is learned to adjust the shape of the object, so that the camera pose and scene expression accuracy are improved at the same time, and an incremental camera pose training strategy is further proposed to make up for the defects of the initial camera pose of the existing method. The application aims at the few-view input scene, realizes the synthesis of a realistic new view rendering image by using the neural radiance field without the camera pose, solves the problems that the current pose optimization neural radiance field needs the initial pose, the pure implicit network training speed is slow and difficult to initialize, and the method is insufficiently constrained to the camera pose.

The invention provides a self-adaptive signal processing method and system for a semiconductor gas sensor, and relates to the technical field of signal processing. An electric signal of a gas sensor is collected; performing multi-dimensional analysis on the signal sequence, including calculating a short-term and long-term fluctuation ratio of the signal sequence to evaluate signal quality, calculating an instantaneous change rate, detecting a trend starting point and identifying a noise type to obtain at least one analysis parameter; dynamically adjusting the average sampling times N of signal smoothing and / or switching a signal processing mode according to the analysis parameters; and finally, processing and outputting a signal based on the adjusted strategy. The corresponding system comprises a signal acquisition module, an analysis module, a decision-making module and a processing module. The contradiction between the signal-to-noise ratio and the response speed can be intelligently balanced, the noise is deeply suppressed in the stable period, the response is quick in the sudden change period, and the accuracy and reliability of gas detection are effectively improved.

The application discloses a kind of industrial grade high-precision real-time sorting system and method for plastic particles, belong to industrial visual detection and intelligent sorting technical field;For the industry problem that it is difficult to achieve balance between detection accuracy, processing speed and system throughput, the application constructs the control architecture based on continuous image stream processing and position real-time tracking through the collaborative operation of high-precision image acquisition module, lightweight AI detection module, sorting control module and conveying and collecting module;The core lies in the four-stage collaborative lightweight optimization of "distillation-quantization-pruning-reasoning acceleration" of YOLO-RT model, and integrates the micro defect enhancement branch;The application successfully applies the lightweight YOLO-RT model optimized in depth to the plastic particle high-speed sorting scene for the first time, effectively realizes the high-precision identification of 20 microns and above micro defects, while ensuring end-to-end low latency and industrial throughput, improves the quality control level and production efficiency of plastic particles in high-end manufacturing field.

The application discloses a digital automatic gain control algorithm and belongs to the field of radio frequency transceiver front-end integrated circuits. Step one, a variable window algorithm is designed, a detection algorithm is combined with the variable window algorithm, and conversion from an input signal to average power is completed; step two, a variable step algorithm is designed, an adjustment algorithm is combined with the variable step algorithm, and a gain step is adjusted; and step three, an AGC overall algorithm is designed, and a process from the input signal to adjustment to a threshold value is finally completed. The application realizes collaborative optimization of precision and speed, breaks through the contradiction between precision and speed of a fixed step and a fixed window through the variable step algorithm and the variable window algorithm, and the precision and speed of detection and adjustment are uniformly improved. In addition, the application sets multiple detection modes, adapts to more application scenarios, and is suitable for reconfigurable scenarios.

This invention belongs to the field of path planning, specifically relating to a method for obtaining the shortest path between nodes. The method first obtains the sets of cut vertices on the original graph through several traversals, and then maps the cut vertex set subgraphs corresponding to these sets of cut vertices into a high-level tree of nodes. Preprocessing and parallel shortest path queries are then performed using the high-level tree with the cut vertex set subgraphs as the smallest unit, thereby obtaining the overall shortest path. This method transforms the shortest path analysis for a large number of nodes in a topologically complex original graph into a shortest path analysis for cut vertex sets. It eliminates a large number of useless nodes when obtaining the shortest path, saving related calculations and reducing computational load, thus improving the speed of shortest path acquisition. Furthermore, preprocessing is performed on the subgraphs formed by cut vertex sets, avoiding the computationally cumbersome problem of directly obtaining the shortest path for complex topological structures of large subgraphs.

This invention relates to a method and system for visualizing a bridge BIM model. Specifically, the method involves acquiring a bridge BIM model, calculating the folding cost and the degree of local optimization after folding for each edge, sorting the edges according to the folding cost and the degree of local optimization, and placing them into a priority queue. Edges are then sequentially removed from the priority queue, and topology and boundary preservation checks are performed. If the checks pass, the two vertices of the removed edge are merged into a new vertex, and the folding cost and the degree of local optimization after folding for the affected edge are updated; otherwise, the removed edge is skipped. The simplified BIM model is divided into multiple components, and a starting triangle is determined from each component based on the normal vector of the triangle neighborhood in the component. The component is compressed using the starting triangle and then sent to a mobile device. The mobile device decompresses and renders the BIM model.

This invention relates to a method for 3D digital display of urban assets, based on an eight-part model and ten-level spatial geographic boundaries, to present and express different categories of urban assets in three dimensions. The eight-part model includes hierarchical, categorical, segmented, block-based, building-based, layered, household-based, and zone-based classifications. The ten-level spatial geographic boundaries include city-level, district-level, street-level, community-level, grid-level, building-level, floor-level, room-level, block-level, and element-level classifications. This invention can dynamically express spatiotemporal two-dimensional and three-dimensional data from multiple sources and with different structures, loading content of interest into a 3D scene according to user needs, thereby reducing unnecessary memory usage in the system and enhancing user experience. It also solves problems such as high latency and slow loading speed in network data services, achieving the technical effects of small memory footprint, fast loading speed, comprehensive data types, excellent presentation effects, realistic digital expression, and easy updates.

The utility model relates to the technical field of spice powder processing, and provides a spice powder soaking device which comprises a device body, a soaking barrel is movably embedded in the device body, sliding grooves are formed in the periphery of the interior of the device body, a plurality of sliding blocks are fixedly installed on the outer surface of the soaking barrel, and the sliding blocks are arranged in the device body. The outer surfaces of the multiple sliding blocks are connected to the inner surfaces of the sliding grooves in a sliding mode, telescopic columns are arranged at the bottoms of the multiple sliding blocks, and reset springs are arranged at the bottoms of the multiple sliding blocks. The contact mode of spice powder and liquid is continuously changed, the mixing effect of the spice powder and the liquid is enhanced, and the spice powder is more uniformly dispersed in the liquid through the mechanical lifting motion, so that the mixing efficiency is improved, and the problem of too slow mixing caused by static soaking is avoided.

The invention discloses a ring amplifier circuit adopting a replica bias and bias enhancement technology. The ring amplifier circuit comprises a first amplification stage, a second amplification stage, a third amplification stage, a replica bias loop and an output stage bias enhancement circuit, in the replica bias loop, the circuit structure of a replica branch is the same as that of the second amplification stage, and the circuit parameter of the replica branch is in 1 / N proportion to that of the second amplification stage; the output stage bias enhancement circuit comprises a second amplification stage bias resistor connected in series between the PMOS transistor and the NMOS transistor of the second amplification stage A2, and a cross connection mode from the output of the second amplification stage to the input of the third amplification stage; the cross connection mode is that the high output node voltage of the second amplification stage is connected to the NMOS transistor input of the third amplification stage, and the low output node voltage of the second amplification stage is connected to the PMOS transistor input of the third amplification stage. By designing a replica bias loop and an output stage bias enhancement technology, comprehensive balance between stable performance and high-speed and high-precision performance requirements under different process, voltage and temperature conditions is realized.

The utility model discloses a new -type marine FGSS exhaust silencer, including the silencer shell, the both ends of silencer shell are connected with the oval head, and the oval head of bottom end is connected with the import, and the oval head of top end is connected with the export, the inner wall of oval head and silencer shell is equipped with centrifugal glass sound -proof cotton, heat -insulating aluminium foil, the import airflow uniform distribution board is set up in the silencer shell, and the offset airflow uniform distribution board is set up, and the import central gas guide pipe is set up in the import airflow uniform distribution board, and the offset gas guide short pipe, offset gas guide long pipe interval and alternately distribute in several layers offset airflow uniform distribution board, the air hole is seted up in the import airflow uniform distribution board and offset airflow uniform distribution board. The utility model discloses satisfy ordinary FGSS silencer efficacy, and have the advantages such as better sound insulation effect, convenient to dismantle and install, simple manufacture, stable performance.

The present application relates to the technical field of image processing, more particularly, the present application relates to an AOI defect detection method and system based on industrial vision, comprising: acquiring a gray scale image of an electronic screen to be measured; determining the physical period of pixel arrangement of the electronic screen; constructing a local period difference degree, which includes calculating the gradient difference value between any pixel point in the gray scale image and its adjacent pixel point along the physical period. The present application quantifies the degree of dirtiness of the image by calculating the local period difference degree and constructing a period confusion factor combined with statistical characteristics. On this basis, the ADMM acceleration coefficient is dynamically generated: a conservative step size is used for low-quality images to prevent algorithm divergence, and an aggressive step size is used for high-quality images to improve efficiency. This method effectively solves the problem that the traditional fixed step size strategy cannot balance detection speed and accuracy, significantly improving the robustness of the AOI system.

This invention discloses a method, apparatus, electronic device, and storage medium for inspecting transmission towers. The method includes: acquiring inspection images of the transmission towers; inputting the inspection images into a connection detection model to perform connection detection, obtaining a connection detection target image of the transmission tower; inputting the connection detection target image into a ring pin detection model to perform ring pin detection, obtaining a ring pin detection result; and mapping the ring pin detection result back to the inspection image to obtain the inspection result of the transmission tower. In other words, this invention can automatically detect whether there are ring pins in the inspection images using the connection detection model and the ring pin detection model, eliminating the need for manual inspection of the transmission tower inspection images. This improves the speed and accuracy of replacing R-type pins with ring pins in the connection components of the transmission tower, and reduces the time cost of replacing R-type pins with ring pins in the connection components of the transmission tower.

This invention discloses an intelligent solar tracking photovoltaic system and control method based on dual-mode adjustment, belonging to the field of intelligent control technology for photovoltaic power generation. The system includes a sensing module, a control module, an execution module, and a storage module. The control method includes data acquisition, mode judgment and switching, parameter calculation, execution actions, parameter verification and fine-tuning steps, and also integrates dynamic threshold updates, battery power adaptation, low-energy consumption maintenance in strong winds, and remote control functions. This invention achieves synergistic optimization of solar tracking accuracy and response speed. Through the mode-based coordination of solar tracking and vibration reduction, and dynamic adaptation to multiple operating conditions, it improves the power generation efficiency, operational stability, and ease of operation of the photovoltaic system, while reducing equipment losses and energy consumption.

The application relates to the technical field of computer program optimization, and discloses a Go language program memory optimization method and system based on life period analysis, which comprises the following steps: abstract syntax trees of Go source codes are traversed, extended escape analysis is performed, and an escape graph is constructed; a life period equivalence graph is constructed based on the escape graph; context-sensitive life period analysis is performed, life period end function of each object under corresponding calling context is determined by traversing a life period path; code conversion is performed based on an allocation handle, a memory management handle is created at the entrance of the life period end function, a release primitive is inserted before a return statement of the end function, and an object is registered to a management range of a corresponding handle at an object allocation point. Through light life period analysis, the application realizes compiler-assisted explicit recovery of a heap object without high-precision pointing analysis, effectively reduces recovery pressure, and improves runtime performance of a Go program.