218results about How to "Fix stability issues" patented technology

The utility model relates to the technical field of extrusion container cleaning, and discloses an extrusion container residual aluminum cleaning device which comprises a supporting frame, a driving rod is fixedly connected to the outer wall of the supporting frame, a connecting rod is fixedly connected to the output end of the driving rod, a connecting assembly is arranged at the bottom of the supporting frame, and a fixing assembly is arranged in the connecting rod. The connecting assembly comprises a clamping block, the top of the clamping block is arranged at the bottom of the supporting frame, the bottom of the supporting frame is fixedly connected with a connecting block, a sliding groove is formed in the supporting frame, and one end of the clamping block is fixedly connected with a transmission block. According to the supporting frame, the push rod drives the connecting disc and the transmission block and is matched with the first spring, so that the clamping block slides in the connecting block, the supporting frame is conveniently fixed to the top of the extruder and kept stable, and the problem that when an existing supporting frame is fixed, various tools need to be matched for use, and disassembling cannot be conveniently conducted is solved; and the fixing convenience of the supporting frame is improved.

The application relates to the technical field of lithium battery diaphragm, in particular to a high-stability lithium battery diaphragm and a preparation method thereof. The high-stability lithium battery diaphragm is prepared by the following steps: after a polypropylene film is irradiated by ozone and ultraviolet light in sequence, pre-deposition and pre-grafting are carried out on the surface of the polypropylene film, and then ultraviolet radiation treatment is carried out. The application realizes synergistic effect of nano-enhancement and self-repairing, solves the stability problem of traditional PP diaphragms in long-term cycles, and provides a reliable diaphragm solution for high-energy-density lithium batteries.

The application discloses an image processing method, device and system. The method comprises the following steps: receiving a first image; processing the first image by using a processing model to obtain a second image, wherein the resolution of the second image and the resolution of the first image satisfy a first preset condition, the processing model is used for inputting the first image into a first generation network to obtain a third image, inputting the third image into a second generation network to obtain the second image, and the resolution of the third image and the resolution of the first image satisfy a second preset condition; and displaying the second image. The application solves the technical problem that the robustness and stability of the image processing method in the related art in a real scene are poor.

The invention relates to a high-plasticity GH4141 alloy cold-drawn bar with a uniform structure and a preparation method of the high-plasticity GH4141 alloy cold-drawn bar, belongs to the field of high-temperature alloy materials, and solves at least one of the problems that in the prior art, a GH4141 bar is poor in grain size uniformity, and a fastener is poor in performance stability, low in forming qualification rate and the like due to insufficient plasticity. The preparation method of the high-plasticity GH4141 alloy cold-drawn bar with the uniform structure comprises the steps that a hot-rolled GH4141 alloy bar blank is subjected to solution treatment, and then first-time cold drawing, first-time intermediate annealing treatment, second-time cold drawing, second-time intermediate annealing treatment, finished product cold drawing and finished product annealing treatment are sequentially carried out. According to the method, the plasticity is remarkably improved while the strength of the GH4141 alloy cold-drawn bar is guaranteed, and the upsetting qualification rate of a fastener and the product performance consistency are effectively improved.

The invention relates to a residential energy system low-carbon scheduling method considering a hydrogen-terrestrial heat coordination effect. The residential energy system low-carbon scheduling method comprises the following steps: step (1), constructing a basic physical model for representing energy flow and equipment physical characteristics in a residential energy system; (2) converting the basic physical model into a coupling constraint model based on a dynamic coupling constraint between energy supplies of a set type in the residential energy system; step (3), on the basis of the coupling constraint model, according to a set scheduling period, constructing a low-carbon scheduling objective function to obtain a complete optimization model; and step (4), solving the optimization model to obtain an operation strategy of each device in the residential energy system in the set scheduling period.

The present application relates to a kind of environment-friendly water-based phenolic resin anticorrosive coating and its preparation process, belong to the field of coating technology.The coating is made of water-based phenolic resin emulsion, hyaluronic acid-lysine composition load nano SiO2-ZnO composite filler, synergistic anticorrosive filler, wetting dispersant, film forming aid, leveling thickener, defoaming agent and deionized water.The superhydrophilic of hyaluronic acid fundamentally solves the dispersion and storage stability problem of phenolic resin in aqueous phase, and the amino group of its lysine side chain can also chemically bond with resin during curing, significantly enhancing the adhesion, flexibility and interfacial bonding strength of coating.At the same time, nano SiO2, ZnO and synergistic anticorrosive filler construct a multiple synergistic anticorrosive network of physical shielding, sacrificial anode and chemical passivation, achieving long-term active protection.The whole system uses water as medium, selects bio-based raw materials and low VOC additives, and the environmental protection is outstanding.

The utility model relates to a single-ear and double-ear switchable Bluetooth earphone, which is provided with a head beam assembly, an earphone mainboard assembly, a first earmuff sound production assembly, a single earmuff clamping assembly and a second earmuff sound production assembly, the first earmuff sound production assembly and the single earmuff clamping assembly can be switched to be connected with the first end of the head beam assembly. When the first earmuff sound production assembly is connected with the first end of the head beam assembly, the first earmuff sound production assembly is electrically connected with the earphone mainboard assembly at the same time. The second earmuff sound production assembly is connected to the second end of the head beam assembly, and the second earmuff sound production assembly is electrically connected with the earphone mainboard assembly. A user can switch to install the first earmuff sound production assembly and the single earmuff clamping assembly to meet the requirements of different use scenes; the single-earmuff clamping assembly is arranged and fixed to the head, and falling is avoided.

The invention discloses an ultrathin silicon-based flexible sensor and a preparation method, and relates to the technical field of bioelectronics and flexible sensing. The device specifically comprises a flexible substrate; the monocrystalline silicon thin film layer is combined on the surface of the flexible substrate; the monocrystalline silicon thin film layer is of a patterned structure and comprises at least one gas sensing area; wherein the gas sensing area utilizes the doped monocrystalline silicon surface to adsorb gas molecules to be detected, and is configured to detect gas based on carrier concentration change caused by surface adsorption. The invention aims to develop a flexible sensor which has intrinsic flexibility, high sensing performance and biocompatibility and can synchronously realize gas and mechanical signal detection.

The utility model discloses a kind of mine dump truck antenna support, comprising: support assembly, vertical pole, support base, transition base, buffer base, buffer pad, antenna installation support;Support assembly is frame structure, support assembly is provided with assembly connecting end head in bottom, vertical pole lower end is hinged with support base, vertical pole upper end is hinged with assembly connecting end head;Transition base is hinged in support assembly lower part, transition base, assembly connecting end head are located at the both sides of support assembly respectively;Antenna installation support is connected in support assembly top, buffer base is connected in support assembly, buffer base is located between antenna installation support, transition base, buffer pad is installed between support assembly, buffer base. The utility model can effectively solve the balance and stability problem of antenna in driving and unloading process, provide reliable guarantee for high-precision positioning of unmanned mine dump truck.

The present application relates to a kind of aero-engine cold start auxiliary staged preheating system and control method, belong to aero-engine starting technical field;The present application is integrated preheating treatment to engine fuel, in-cylinder mixture thermodynamic state (in-cylinder thermal atmosphere before ignition) and lubricating oil by pipeline fuel preheating device, oil outlet preheating device, cylinder sleeve preheating device and lubricating oil heat preservation preheating device, coupling combustion parameter control strategy, according to the temperature gradient of plateau alpine low temperature environment, design four levels of plateau alpine cold start feedback control strategy, so that aviation kerosene pressure combustion engine provides and implements reasonable preheating scheme according to different low temperature low pressure environment outside in plateau alpine condition, can effectively solve the problem that aviation kerosene pressure combustion engine is difficult to cold start, starting time is long, engine parts wear seriously and cold start stability is poor and the like in plateau alpine environment.

The invention provides a candesartan cilexetil capsule and a preparation method thereof, and the candesartan cilexetil capsule is characterized in that each capsule contains candesartan cilexetil, lactose, corn starch, hydroxypropyl cellulose, carboxymethyl cellulose calcium, polyethylene glycol 8000 and magnesium stearate. According to the candesartan cilexetil capsule provided by the invention, the problem of stability of candesartan cilexetil is solved, the possibility of crystal transformation of common tablets in a tabletting process is reduced, and the characteristic dissolution curve of a final product is similar to that of a reference preparation; the preparation method is simple in process route, the fluidized bed one-step granulation method enables the loss to be less, the product yield is higher, and the industrial mass production cost is reduced.

This utility model discloses a nighttime driving safety enhancement device at the nose of a highway, belonging to the field of highway traffic safety technology. This utility model uses nighttime vision guidance components deployed on the mainline and ramp guardrails in a designated area to continuously guide drivers in anticipating changes in traffic flow, preventing sudden accidents. Illuminated warning components behind the small nose point alert drivers to entering critical areas, while reflective guide components in front help predict road direction. Warm yellow and pure white guidance lights are respectively installed on the left and right sides to help determine road boundaries, with continuous lighting guiding the driver's line of sight along the road. A segmented guidance system is adopted: constant illumination at long distances provides stable guidance, flashing at medium distances enhances warnings, and constant illumination at close distances reduces visual fatigue. This effectively solves the problem of unstable visibility and warning effects of existing devices in the nose area at night and in low-visibility environments, and ensures guidance effectiveness under adverse conditions through a combination of active and passive illumination.

The present application relates to a kind of high stability water-in-oil PDRN emulsion and its preparation method, belong to the field of biotechnology;The preparation method includes the following steps: (1) PDRN enzymolysis: PDRN is added in DNaseI, supplement metal ion activates enzyme, when fragment enrichment shows <800bp, terminate enzymolysis reaction, obtain crude enzymolysis solution;(2) moderate molecular weight screening: pressurized ultrafiltration crude enzymolysis solution with ultrafiltration membrane, and screen out the target fragment of the permeate of molecular weight in 120-500bp;(3) water phase system optimization: 1,3-propanediol and ubiquinol are added in the permeate;(4) semi-continuous feeding gradient emulsification.The present application is by precise control PDRN molecular weight to take into account stability and solubility, optimize water phase component to realize system viscosity and transparency double standard, cooperate gradient emulsification to guarantee water-in-oil system stability, significantly improve product comprehensive quality and application value, with outstanding technical advantages.

The invention discloses a rapid propagation rooting culture medium for peony seed tissue culture and a culture method, and belongs to the technical field of plant tissue culture. The rapid propagation rooting culture medium takes 1 / 2 MS as a basic culture medium, and further comprises the following components: ammonium nitrate, potassium nitrate, calcium chloride, magnesium sulfate, monopotassium phosphate, a carbon source, kinetin and a curing agent. By adding kinetin into the culture medium, dependence of peony seed tissue culture seedlings on low-temperature treatment is broken, low-temperature pretreatment necessary in a traditional method is avoided, the peony seed tissue culture process is greatly simplified, the culture period is shortened, the rooting rate and the root strengthening rate are increased, the rooting rate is stabilized to be 95% or above, and the rooting rate is stabilized to be more than 95%. Technical support is provided for establishment of a new peony seed tissue culture and rapid propagation technology, and a material foundation is laid for promotion of peony seed tissue culture and rapid propagation factorization.

The invention belongs to the technical field of breeding of aquatic animals, and particularly relates to a breeding method for breeding XX pseudo male fishes by using Chrysophila multistriata. The invention relates to a breeding method for breeding XX pseudo-male fishes by using Christia polyrrhiza, which comprises the following steps of: feeding a feed containing an aromatase inhibitor to Christia polyrrhiza fry with proper day age for induction to obtain pseudo-male fishes with physiological male property and genetic female property; the method comprises the following steps: performing PIT living body electronic marking, then collecting a tail fin tissue sample, performing PCR detection by utilizing a genetic sex specific molecular marker of the Chrysophila polyrrhiza, and screening out pseudo male individuals with female genetic sex and male physiological sex; the obtained pseudo male fish individuals serve as male parents, normal genetic female fishes serve as female parents, intensive cultivation and artificial spawning induction are conducted, and fertilized eggs are obtained; the obtained fertilized eggs are collected and hatched, and pseudo male fishes with all genotypes being XX are obtained. According to the method, the genetic all-female rate of the breeding offspring reaches 100%, and the production purity of the offspring seeds is greatly improved.

The invention discloses a large longitudinal slope simply supported steel truss girder high-position girder falling construction method, which relates to the technical field of bridge construction, and comprises the following steps: S1, arranging a girder falling supporting point position, manufacturing a girder falling support and supporting a steel truss girder; s2, synchronous jacking, local falling, section drawing and re-jacking are circularly and alternately conducted through a beam falling support at one end of the steel truss beam till first-stage beam falling is completed; s3, a jack arranged on a high pier end padstone of the steel truss girder is dismantled, girder falling continues, and second-stage girder falling is completed; s4, synchronous jacking, local falling, section drawing and re-jacking circulation are conducted through a beam falling support at the low pier end of the steel truss beam till third-stage beam falling is completed; s5, the jack arranged on the low pier end padstone of the steel truss girder is dismantled, girder falling continues, and fourth-stage girder falling is completed; s6, pressure grouting is conducted on the anchor bolt holes, other facilities are dismantled, and construction is completed; the technical problems that in the prior art, beam falling of a large-span steel truss girder bridge is difficult to control, and efficiency is low are solved.

A kind of airplane brake system air-ground signal control method, through air-ground signal control circuit, determine magnetic latching relay, determine airplane ground signal, determine airplane air signal and determine airplane air-ground control logic realize the control of airplane brake system air-ground signal, the original airplane brake system electrical control system landing gear system landing switch and landing gear is retracted to position switch respectively increase magnetic latching relay in this application, the ground state of airplane is determined by landing gear system landing switch and magnetic latching relay, the air state of airplane is determined by landing gear is retracted to position switch and magnetic latching relay, completely solve the problem of unstable and unreliable airplane air / ground signal due to landing gear system landing switch simultaneously determining the air / ground state of airplane during airplane landing phase due to landing gear system landing switch repeatedly disconnecting and connecting, improve the safety of airplane brake system.

The utility model provides a gated intelligent household system, and belongs to the technical field of intelligent household. Comprising a door control main control board, an intelligent door lock, an intelligent home linkage chip, an intelligent home gateway and a plurality of intelligent home sub-devices, the intelligent door lock is used for identifying unlocking operation of a user; the intelligent home linkage chip is arranged in the door control main control board, and the intelligent home linkage chip can receive an unlocking signal of the intelligent door lock and a signal of a shortcut key on a door control rear screen panel and generate a corresponding instruction data packet according to the received signal. According to the utility model, the intelligent household linkage chip is arranged, and the intelligent household linkage chip supports a wireless communication protocol of one of WIFI, Bluetooth or Zigbee, so that the intelligent household linkage chip can stably communicate with the intelligent household gateway, the linkage function of the door control and other household equipment is enriched, and the purpose of convenient and fast household automatic control is realized.

This utility model discloses an intelligent palletizing device for logistics transportation, relating to the field of logistics palletizing. It solves the problem that existing devices are unable to stably transfer and efficiently stack logistics goods according to demand, employing the following solution: It includes a support and a main arm mounted on its top. Two sets of opposing and rotating support arms are mounted at the front end of the main arm. A stacking frame is fixedly welded to the front part of the bottom side of the support arm. A mounting plate is fixedly welded to the inner side of the support arm, and a hydraulic cylinder assembly is fixedly installed in the middle of the rear side wall of the mounting plate. This intelligent palletizing device for logistics transportation, through the arrangement of the support and the components at the front end of the main arm on its top side, facilitates scooping up the goods from the stacking frame. Simultaneously, the hydraulic cylinder assembly on the support arm adjusts the position of the clamping plate, pressing the goods between the clamping plate and the stacking frame to ensure stability. Furthermore, the auxiliary drive motor can adjust the position of the clamping plate, facilitating the outward pushing of logistics goods during palletizing, achieving stable palletizing and stacking.

This invention discloses a spray composition, its preparation method, an oral care device, and its application, belonging to the field of biomedical technology. The composition is a synergistic compound of a herbal enzyme solution prepared by a "cell wall breaking-enzymatic hydrolysis-fermentation" process and a lyophilized stem cell exosome powder. The herbal enzyme solution contains berberine ≥1.2 mg / mL and baicalin ≥1.0 mg / mL, exhibiting high anti-inflammatory (IL-1β inhibition rate ≥55%) and deodorizing (VSC decomposition rate ≥88%) effects. The lyophilized exosome powder is rich in VEGF (≥50 pg / mg protein) and TGF-β1 (≥30 pg / mg protein), promoting gingival repair. The stability and delivery challenges of exosomes are solved through "lyophilization and reconstitution + ultrasonic atomization," resulting in atomized particles of 1–10 μm (D50 = 1–5 μm). Experimental results show that the gingivitis redness and swelling subsides in ≥90% of cases, the gingival recession thickness increases by 0.4–0.6 mm in 8 weeks, fresh breath is maintained for 4–6 hours, and the healing cycle of oral ulcers is shortened by 40%–50%, achieving a synergistic effect of "immediate antibacterial and anti-inflammatory treatment + long-term tissue repair".

The embodiment of the invention provides a 5G-Advanced sensing communication collaborative resource scheduling method and system for a smart substation, and belongs to the technical field of power system operation and maintenance. The method comprises the steps that a 5G-Advanced cellular-free unmanned aerial vehicle communication and sensing integrated network architecture is constructed, the network architecture comprises a passive sensing layer, an air-ground cooperative access layer and a centralized processing layer, and deep integration of sensing, energy supply and communication functions is achieved; establishing a system model based on the network architecture, wherein the system model comprises a network topology model, a communication and inductance integrated transmission model and a constraint optimization problem model; a cross-CPU dynamic resource scheduling algorithm based on MADDPG is designed, and joint optimization of user association, power distribution and load balancing is achieved through a centralized training-distributed execution mechanism; based on a scheduling algorithm and a system model, substation global real-time sensing, data transmission and operation and maintenance performance collaborative guarantee are achieved. The sensing fusion and coverage capability is greatly improved, the dynamic scene adaptability is better, and the sensing-operation and maintenance collaboration value is higher.

The invention discloses an educational academic literature tracing method and system based on retrieval enhancement generation. The method comprises the following steps: performing fine-grained analysis on the multi-source literature, constructing a document object containing fields such as a title, an abstract, a methodology, an experimental result and a conclusion, and establishing a field-level index and a citation network feature score; identifying an academic intention queried by a user by utilizing a large model, dynamically loading a weight mapping table according to the academic intention, and performing weighted rearrangement on multiple paths of retrieval results to obtain candidate core literatures; generating a traceability text with an explicit label based on the candidate literature; and executing reference consistency verification by using the natural language inference model, and executing illusion correction according to a verification result. According to the method, through structured field analysis and dynamic rearrangement of intention driving, the problems of semantic fragmentation and reference fictition when a general RAG is used for processing complex academic literatures are solved, and the academic traceability preciseness and accuracy are remarkably improved.

The invention provides a color feature extraction and correction method and system for drug sensitive plate MIC value interpretation and a computer readable storage medium. The method comprises the following steps: acquiring a to-be-processed drug sensitive plate image; performing visual preprocessing such as exposure, contrast and white balance on the image according to the configuration file; high-precision alignment correction of the image is realized by using ORB feature detection and a BFMatcher matching algorithm; generating a transparent mask with an Alpha channel based on predefined hole position contour data, and performing non-destructive target segmentation on the aligned image; and converting the target region to an HSV color space, extracting H-channel hue features, executing cyclic correction, eliminating the problem of numerical value jump of the red region, and obtaining stable color feature data. The method has the advantages of being high in image registration precision, accurate in segmentation, stable in color feature, high in robustness and the like, and automatic and standardized interpretation of the MIC value of the drug sensitive plate can be achieved under different shooting conditions.

The application discloses a CT-guided old brain PET image spatial standardization system, method and device, the system comprises a PET / CT image acquisition and format conversion module, a PET / CT preprocessing module, a PET / CT image coarse standardization module, a PET / CT image fine standardization module and an automatic SUV extraction module, the old brain PET molecular image spatial standardization is carried out by using a low-dose CT brain structure image as an auxiliary, and the SUV of a region of interest is automatically extracted by using a standard space brain atlas partitioning, the application adopts a two-step strategy from coarse to fine, and by means of an optimized process, an accurate, stable and user-friendly spatial standardization system is provided for the old brain PET image, and the application has important clinical application value and scientific research significance.

This invention provides an automatic steel sheet embedding device and control method in injection molds, including a coil mechanism for carrying coiled steel sheet material, a feeding mechanism for conveying the steel sheet material coil to a stamping mechanism; the stamping mechanism includes a fixed plate and a stamping cylinder mounted above the fixed plate, the output end of the stamping cylinder being connected to an upper stamping die, a lower stamping die driven by a motion cylinder being provided below the upper stamping die, a stamping block being provided at the lower end of the upper stamping die, a positioning block and a stamping groove being provided on the lower stamping die, the stamping groove corresponding to the position of the stamping block, the steel sheet material moving along the length direction of the positioning block to the stamping groove, the stamping cylinder controlling the upper stamping die to move downward relative to the lower stamping die, thereby stamping and shearing the steel sheet connection; a steel sheet conveying mechanism includes a multi-axis moving assembly, the multi-axis moving assembly respectively driving a nozzle for adsorbing the steel sheet on the positioning block and a steel sheet receiving fixture, the steel sheet receiving fixture being provided with several receiving grooves, the nozzle adsorbing the steel sheet on the positioning block and then installing it in the receiving groove.

The utility model discloses a yarn disc control system, including frame, control unit, yarn disc, driving gear and driven gear, control unit fixedly set up on frame, yarn disc rotatable installation is in on frame, the output shaft of control unit is connected with driving gear fixedly, driven gear is connected with yarn disc, driving gear is engaged with driven gear. This yarn disc control system effectively avoided the problem of yarn disc slip, can stable accurate control yarn disc movement simultaneously, and long service life, and the installation and maintenance are convenient.

The application relates to the technical field of computer vision, and provides a high-stability virtual object position display method and device. In a mapping stage, the object structure of a virtual scene is acquired, and an exception handling boundary is established; in the exception handling boundary, a virtual object in the virtual scene is regarded as a general engine object, coordinate data corresponding to the general engine object is acquired based on the object structure, and a path graph is drawn according to the coordinate data; the running state of a data processing process in the exception handling boundary is monitored, if running exception is detected in any processing period, the exception data corresponding to the running exception is discarded; in a virtual scene running stage, the position information of the virtual object is acquired in the exception handling boundary, the position information is matched with the path graph, the relative position of the virtual object in the path graph is determined, and the relative position of the virtual object in the path graph is displayed. Runtime exceptions in memory reading or drawing processes are effectively intercepted and isolated.

This utility model discloses a cable fault location and detection device based on EEMD, relating to the field of underground cable monitoring technology. The EEMD-based cable fault location and detection device includes a Hall effect sensor, a signal amplification circuit, an ADC analog-to-digital converter module, a DSP chip, an EEMD processing unit, a classification model, and a display screen 112. The Hall effect sensor detects magnetic field signals; its output is electrically connected to the input of the signal amplification circuit. The output of the signal amplification circuit is electrically connected to the input of the ADC analog-to-digital converter module, and the output of the ADC module is electrically connected to the input of the DSP chip. The signal amplification circuit and the ADC module amplify and process the magnetic field signal, respectively, and convert the magnetic field signal into a digital signal. The output of the DSP chip is electrically connected to the input of the EEMD processing unit, and the DSP chip is used to preprocess the magnetic field signal. This EEMD-based cable fault location and detection device can determine the fault type and accurately locate the fault point.

The invention relates to the technical field of biology, in particular to a method for regulating and controlling the methylation level of a plant genome DNA specific region by using a Cas12i system. The invention provides a fusion protein. The fusion protein sequentially comprises a first nuclear localization signal peptide, a methylation modification structural domain, a connecting peptide, a nuclease activity-free Cas12i protein and a second nuclear localization signal peptide from an N terminal to a C terminal, the methylation modification structural domain is OsSUVH2 protein capable of up-regulating the methylation level or a functional active fragment of the OsSUVH2 protein; the amino acid sequence of the OsSUVH2 protein is as shown in SEQ ID NO: 1; the amino acid sequence of the nuclease activity-free Cas12i protein is as shown in SEQ ID NO: 3. The invention also provides a CRISPR-dCas12i system constructed on the basis of the fusion protein. According to the CRISPR-dCas12i system, the methylation modification efficiency of the plant genome DNA is remarkably improved.

The application relates to the technical field of circuits, and provides a circuit of a VI source and test equipment with the same, which comprises an error amplification module, a power amplification module, a feedback module, a current sampling module and an external interface module; the inverting input end of the error amplification module is connected with the voltage feedback part of the feedback module; the voltage feedback part and the current feedback part of the feedback module are used for being connected with a device under test through the external interface module. The output end of the error amplification module is connected with the non-inverting input end of the power amplification module; the output end of the power amplification module is connected with the current sampling module; the current sampling module is connected with the current feedback part of the feedback module; the voltage negative feedback closed loop can be formed through the feedback module; the output voltage can be adjusted in real time; the precision and stability of the voltage output are improved; the feedback module, the error amplification module and the power amplification module work cooperatively to realize accurate control and stable output of the output current.