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39results about How to "Precise and stable control" patented technology

Modeling method of fractional order LC type three-phase inverter

The invention discloses a modeling method of a fractional order LC type three-phase inverter, and relates to the technical field of modeling and control of power electronic converters. On the basis of a traditional integer order LC type three-phase inverter, an integer order LC type filter in the inverter is replaced by a fractional order LC type filter, so that a new fractional order inverter topology is constructed. On the basis of the topology, mathematical models under a three-phase static abc coordinate system and a two-phase rotating dq coordinate system are constructed. Based on the mathematical model, a voltage and current double-closed-loop decoupling control strategy of the fractional order LC type three-phase inverter is deduced. In addition, a traditional virtual synchronous generator control link is replaced by an FOVSG control link, and the stability of the FOVSG control link is analyzed through a small signal model. According to the invention, dynamic decoupling can be effectively realized according to the order of the fractional order LC filter. In addition, an adjustable order is introduced in the FOVSG control link, and the performance of the inverter is improved under different control requirements.
Owner:GUANGXI UNIV

High and low temperature control rock-soil nuclear magnetic resonance triaxial apparatus and use method thereof

The invention discloses a high and low temperature control rock-soil nuclear magnetic resonance triaxial apparatus and a use method, the high and low temperature control rock-soil nuclear magnetic resonance triaxial apparatus comprises a high and low temperature control rock-soil nuclear magnetic resonance triaxial apparatus arranged in a low field nuclear magnetic resonance analyzer, the high and low temperature control rock-soil nuclear magnetic resonance triaxial apparatus comprises a temperature control system, a pressure chamber, an axial stress loading device and a data acquisition system, temperature control systems are arranged at the upper and lower ends of the pressure chamber; and an axial stress loading device and a data acquisition system are arranged below the pressure chamber. According to the invention, high and low temperature accurate and stable control can be realized, an in-situ occurrence temperature environment and a real stress state of a soil sample are really simulated, and the material and the size of the device are adaptive to the test requirements of a low-field nuclear magnetic resonance analyzer and the size of a pore cavity; the test research on the macroscopic strength characteristic, the micro-pore structure, the permeability characteristic and the like of the geotechnical material by the temperature can be carried out; while the strength and deformation mechanical property indexes of the sample are obtained, a high-resolution image of internal pore structure evolution and dynamic moisture migration can be captured.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY

Powder spraying refining process for production of rare earth oxide dispersion strengthened alloy

ActiveCN119571010Aavoid it happening againprecise and stable controlProcess efficiency improvementSlagOxide dispersion-strengthened alloy
The invention discloses a powder spraying refining process for production of a rare earth oxide dispersion strengthened alloy, and belongs to the technical field of alloy smelting. During converter tapping, iron silicon aluminum 4.5-8.5 kg / t is adopted for strong deoxidation; after tapping is finished, 0.2-0.4 kg / t of rare earth aluminum alloy is added to the slag surface of the steel ladle for slag surface deoxidation; molten steel is conveyed to a powder spraying station, the temperature of the molten steel is regulated and controlled to be 1570-1610 DEG C, inert carrier gas is used for spraying rare earth powder into the molten steel at a high speed, the carrier gas conveying working pressure of steel ladle powder spraying is 3.0-4.0 bar, the carrier gas flow is 40-60 m < 3 > / h, the steel ladle powder spraying speed is 10-50 kg / min, and the dosage of the powder spraying agent is 1.0-50.0 kg / t. After the powder spraying refining process is adopted, the solid solution oxygen content in the steel can be increased to 100 ppm or above, and the solid solution content of RE elements can be increased to 300 ppm or above, so that nano rare earth oxide dispersion strengthened alloy is formed.
Owner:SHANGHAI UNIV

Tantalum-tungsten alloy and short-process preparation method thereof

The medium-temperature radial forging method comprises the steps that pretreatment is conducted, specifically, a niobium-tungsten alloy extrusion bar blank is heated for 60-180 minutes at the temperature of 750-950 DEG C, rapid forging and straightening are conducted, and a medium-temperature radial forging bar blank is obtained and annealed for 60-120 minutes at the temperature of 1250-1450 DEG C; medium-temperature radial forging is conducted, specifically, a two-step method is adopted, in the first step, a bar blank is preheated to 80-100 DEG C and coated with Ta1350 high-temperature glass powder, heat preservation is conducted for 90-180 minutes at the temperature of 1050-1150 DEG C, and the bar blank is forged into a bar with the diameter of 70 + / -1 mm in the mode that the diameter is reduced by 7-10 mm every time; and in the second step, the heating and coating processes are repeated, the diameter is reduced by 5-7 mm every time, and the bar with the required specification is manufactured. By optimizing the medium-temperature forging and annealing process, the fine grain structure is controlled, the high-temperature mechanical property, creep resistance and oxidation resistance of the material are improved, and the material is suitable for aerospace engines and other high-temperature and high-pressure scenes. Compared with a traditional method, the technology improves the yield, shortens the production period, reduces the labor intensity, is suitable for large-scale production, reduces surface air suction, oxidation and burning loss, and improves the production efficiency and the finished product quality.
Owner:NINGXIA ORIENT INTELLIGENT MANUFACTURING TECHNOLOGY CO LTD

A slope anchor hole straightening auxiliary device and construction quality assurance method

ActiveCN118979495Bprecise and stable movementImprove reliabilityDerricks/mastsBulkheads/piles
The present invention provides a slope anchor hole straightening auxiliary device and a construction quality assurance method, comprising: a base, a slope body arranged on the base, an upper roadbed and a lower roadbed located on the base and respectively placed on both sides of the slope body, a plurality of guide components arranged on the upper roadbed and the lower roadbed, an operating table arranged on one of the guide components, an electric winch installed on the upper roadbed, one end of which is arranged on the electric winch. The slope anchor hole straightening auxiliary device and the construction quality assurance method can provide a stable and accurate operating plane on the slope body through the arranged guide components, positioning components and stabilizing components, so that the anchor drill on the operating table can reduce the influence of vibration on the integrity of the hole when working, and improve the accuracy of the anchor drill after the angle adjustment, thereby ensuring the straightening effect of the anchor hole.
Owner:YUNNAN YUNLING EXPRESSWAY BRIDGE ENG CO LTD +2

Welding gun fixing frame of welding robot

The utility model relates to the field of welding robots, in particular to a welding gun fixing frame of a welding robot. The technical problems that according to an existing welding robot, due to the fact that the welding angles of different workpieces are different, the optimal welding angle and position are difficult to provide when a limiting frame fixes a welding gun for welding, welding is uneven or the quality of a welding seam is poor, the overall welding quality is reduced, and the strength of a welding structure is affected are solved. According to the technical scheme, the welding gun fixing frame of the welding robot comprises a supporting base, a supporting assembly, an adjusting assembly and a moving assembly; the welding gun is adjusted by combining the rotating rod with the clamping block connecting sleeve rod, the welding angle of the welding gun is accurately adjusted so as to adapt to different types of welding seams and workpieces, meanwhile, the clamping block connecting rotating rod and the fixing block are fixed, the stable and reliable welding angle is kept, looseness or change is not prone to occurring, and the welding quality and stability are improved; the telescopic rod is connected with the auxiliary frame to assist in fixing the welding guns with different lengths along the inside of the sleeve rod.
Owner:WUHU LUKA ROBOT TECH CO LTD

Self-adaptive real-time speed regulation method for adsorption fan of wall-climbing robot

The invention discloses a self-adaptive real-time speed regulation method for an adsorption fan of a wall-climbing robot, which comprises the following steps: acquiring the pressure in a cavity of an adsorption device of the wall-climbing robot in an adsorption state in real time, and performing difference operation on the pressure and standard atmospheric pressure in an experimental environment to obtain a negative pressure difference between the pressure in the cavity and the atmospheric pressure; the negative pressure difference is input into a rotating speed-negative pressure difference relation model, the rotating speed of the draught fan of the adsorption device of the wall-climbing robot is output, and the rotating speed-negative pressure difference relation model is obtained by fitting the negative pressure difference of the intra-cavity pressure intensity and the atmospheric pressure intensity at different rotating speeds and the corresponding rotating speeds. According to the method, the stability and adaptability of the robot can be improved, and the limitation of the prior art can be effectively dealt with.
Owner:JIANGHAN UNIVERSITY

A method for preparing a multi-alloy synergistically reinforced gray cast iron

This invention relates to the field of gray cast iron material preparation technology, and particularly to a method for preparing multi-alloy synergistically strengthened gray cast iron, comprising: adding steel raw materials to a smelting apparatus and heating to form molten iron; adding a chromium alloy to the molten iron, heating and holding at that temperature to form a basic mixture; determining the degree of furnace lining peeling based on the vibration frequency of the smelting apparatus, and determining the overheating risk level of the basic mixture based on the degree of furnace lining peeling; determining a target heating temperature based on the overheating risk level; determining the eddy current risk level based on the actual rotation speed; adjusting the stirring intensity during the smelting process based on the eddy current risk level; detecting the mixing ratio of the basic mixture and adjusting the amount of steel raw materials or the chromium alloy added to form a target solution; and simultaneously adding manganese nitride, alloyed tin, and ferrous sulfide to the target solution in a specified ratio to form multi-alloy synergistically strengthened gray cast iron. This invention improves the strength, toughness, fluidity, and resistance to solidification defects of gray cast iron.
Owner:FUXIN LIDA STEEL CASTING

Magnetic coding motor device

The utility model provides a magnetic coding motor device, which relates to the field of motor parts and comprises a rotor, a moving ring, a magnetic coding main board, a shaft, a stator and an end cover, the rotor, the moving ring, the magnetic coding main board, the stator and the end cover are sequentially connected onto the shaft, the moving ring is connected onto the rotor, the magnetic coding main board is connected onto the stator, and the end cover is connected onto the shaft. And the stator is located in the rotor and the end cover which are adaptively connected. Magnetic pole signals of the moving ring are sensed by the magnetic braiding main board, the moving ring drives the motor to rotate, the structure is reasonable, and control is more accurate and stable; and the positions of the moving ring and the magnetic braiding mainboard ensure that the moving ring signal is stable, the moving ring is firmly fixed and is not easy to fall off, and the stability and the safety are improved.
Owner:NEW ANANDA DRIVE TECHN SHANGHAI

A robot controller adaptive parameter optimization system based on reinforcement learning

The application discloses a kind of robot controller adaptive parameter optimization systems based on reinforcement learning, including operating state data acquisition module, obtains the operating state data of robot;Decision input sequence construction module, constructs decision input sequence;Embedding processing module, obtains embedding sequence;Improved Decision Transformer model module, set performance-oriented channel and safety-oriented channel;Gating modulation and feature fusion module are used to output control target weight parameter and constraint threshold parameter;Control performance return construction module generates control performance return;TD3 training module, output controller gain parameter;Control execution and parameter update module, execute control output.The application combines reinforcement learning algorithm and robot motion control technology, with the advantages of high control precision, strong system smoothness, high safety and strong generalization ability.
Owner:QINGDAO QINGCHENG DIGITAL TECH CO LTD

Air inlet adjusting mechanism installed on motorcycle motor

The utility model discloses an air inlet adjusting mechanism installed on a motorcycle motor, which relates to the field of motorcycle parts, and comprises a motor main body, an inner sleeve column and an adjusting cap, the inner sleeve column adopts a cylindrical structure and is detachably assembled at the front end of the motor main body, the adjusting cap is movably sleeved on the inner sleeve column, and the inner sleeve column is detachably assembled at the front end of the motor main body. A threaded adjusting rod is rotatably installed in the center of the interior of the inner sleeve column, the tail end of the threaded adjusting rod is in transmission connection with an output shaft of the motor body, an inner limiting sleeve column is installed in the center of the interior of the adjusting cap in the axial direction, a threaded hole is formed in the center of the inner limiting sleeve column in the axial direction, and the front end of the threaded adjusting rod is inserted into the threaded hole in a screwed mode. The adjusting cap is controlled by the motor to move, the gap between the adjusting cap and the throttle valve seat is changed, the air inflow of the throttle valve channel of the motorcycle is controlled, the whole control is simple, and the air inflow control response speed is high, and the efficiency is high.
Owner:HUAINAN SMART AUTOMOTIVE ELECTRONIC CO LTD

Controllable feeding mechanism for glass edging

ActiveCN224615924Ustructural design scienceEasy to install and operate
The utility model relates to glass edge grinding auxiliary frock field especially to a controllable feeding mechanism for glass edge grinding operation, including, left frame, right frame, connecting frame, longitudinal slide rail, longitudinal drive part, removal bearing part, transverse push part and adsorption positioning assembly, left frame, right frame both lay in the working ground, install the connecting frame between left frame and right frame, longitudinal slide rail is installed on left frame, right frame through mounting bolt, the utility model can carry out stable adsorption positioning to glass through adsorption positioning assembly, simultaneously, through the synergetic effect of longitudinal drive part, removal bearing part, transverse push part and adsorption positioning assembly etc. component realizes the mechanical type push feeding of glass, and the operation process is simple and convenient, and the control process is accurate and stable, effectively guarantees the operation safety of edge grinding operator.
Owner:LUOYANG JIULONG NEW MATERIAL TECHNOLOGY CO LTD

Robot remote control system and method, storage medium and computer program product

The invention provides a robot remote control system. The robot remote control system comprises VR head-mounted display equipment; an IMU inertial sensor; the data processing module is used for carrying out mapping calculation on parameters acquired by the VR head-mounted display device and the IMU inertial sensor to obtain corresponding real-time target position, posture and arm angle parameters of the tail end of the mechanical arm; the transmission processing module is used for sending the obtained real-time target position, posture and arm angle parameters of the tail end of the mechanical arm to a remote robot; and the mechanical arm adjusting module is used for receiving the parameters sent by the data processing module and adjusting a mechanical arm of the robot, so that the mechanical arm and an arm of an operator are synchronized. The invention further discloses a corresponding method, a storage medium and a computer program product. According to the invention, the precision and the degree of freedom of movement of remote control can be improved, and the device can be applied to a narrow operation space.
Owner:GUANGDONG HUILUN TECHNOLOGY CO LTD

Self-adaptive super-spiral sliding mode fault-tolerant control method and device for carrier rocket under execution mechanism fault, medium and product

ActiveCN119511721Astable controlprecise and stable controlAdaptive controlTracking modelControl system
The invention discloses a carrier rocket adaptive super-spiral sliding mode fault-tolerant control method and device under an execution mechanism fault, a medium and a product, and relates to the field of fault-tolerant control, and the method comprises the steps: building a carrier rocket attitude control system model containing the execution mechanism fault in combination with a built carrier rocket attitude control system model and a fault model; constructing a carrier rocket attitude tracking system model containing an execution mechanism fault by combining a carrier rocket attitude control system model based on the tracking error; selecting a sliding mode surface and an approaching law, and combining with a carrier rocket attitude tracking system model to obtain a controller stable tracking model; and adopting a controller stable tracking model to realize the tracking of the carrier rocket on the attitude instruction, and completing the adaptive super-spiral sliding mode fault-tolerant control of the carrier rocket. According to the method, the system robustness under the execution mechanism fault can be improved, so that stable operation of the carrier rocket is more effectively realized.
Owner:ROCKET FORCE UNIV OF ENG

Rubber compound production mixing device and damping device thereof

The invention relates to a rubber compound production mixing device and a damping device thereof, and relates to the technical field of rubber compound production equipment.The rubber compound production mixing device comprises a mounting top plate, a connecting column integrally arranged in the middle of the lower side of the mounting top plate, and an outer conical barrel movably arranged on the outer side of the connecting column in a sleeving mode; a telescopic supporting rod pushes an outer conical barrel to conduct downward guiding sliding displacement along a connecting column, the outer conical barrel can elastically push an inner conical barrel to be elastically supported on the ground for damping through a damping spring, meanwhile, when a driving frame and a roller frame move, the gravity center changes, and horizon sensors are arranged on the four sides of a base; when the inclination of the base is detected by the horizontal sensor due to the center-of-gravity shift, the damping device on the lower side of the base works, and the inclined side of the base can be jacked up by the telescopic pushing of the telescopic support rod, so that the horizontal position is kept, the horizontal state of the base is automatically adjusted, the uneven stress of the compression roller is avoided, and the mixing effect of the equipment is ensured.
Owner:ZHANGZHOU PEIFENG NEW MATERIALS CO LTD

A hydraulic system

ActiveCN112879361Beasy to controlprecise and stable controlClassical mechanicsMechanical engineering
A hydraulic system can realize the mutual perpendicularity of the moving trajectories of the first telescopic rods of two first oil cylinders and the second telescopic rod of a second oil cylinder, and at the same time ensure the precise control of the moving strokes of the two first telescopic rods and the second telescopic rod, can smoothly switch between the extended / retracted / stationary states, and maintain stable locking, and at the same time the displacement trajectories of the first telescopic rods of the two first oil cylinders are synchronized.
Owner:XIAMEN XIAGONG CHINA RAILWAY HEAVY MACHINERY CO LTD

Power grid stability control method based on real-time risk assessment

The invention discloses a power grid stability control method based on real-time risk assessment, relates to the field of power system automation and intelligent control, and aims to solve the problems that traditional stability control depends on a static threshold value, response lags behind and is lack of perspectiveness. The method comprises the following steps: collecting multi-source operation data in real time to form a multi-dimensional state vector of a unified time reference; constructing a dynamic risk assessment model containing voltage deviation, frequency change rate and fault current characteristics, and calculating a comprehensive risk index; identifying risk hotspots and propagation paths in combination with the power grid topology; generating control instructions such as generator tripping, load shedding or reactive compensation in a self-adaptive manner according to the risk level; and the control strategy is iteratively optimized through closed-loop feedback until the system recovers to be stable. According to the technical scheme, accurate, rapid and adaptive stable control of risk driving is realized, and the safety margin, the response speed and the economical efficiency of a complex power grid under disturbance are remarkably improved.
Owner:이너 몽골리아 일렉트릭 파워 그룹 컴퍼니 리미티드 이너 몽골리아 일렉트릭 파워 리서치 인스티튜트 브랜치

Fixed-beam planer type milling machine workbench

The utility model discloses a fixed beam planer type milling machine workbench which comprises a first guide rail plate, a machining table, a supporting table and second guide rail plates, the detachable machining table is arranged in the middle of the top end of the supporting table, the second guide rail plates are arranged on the two sides of the machining table, and limiting lugs are arranged on the second guide rail plates through guide clamping plates. Locking rods are arranged on the limiting lugs, and first guide rail plates are arranged on the two sides of the supporting table through lug frames. The plug is arranged at the bottom of the machining table, the machining table and the supporting table can be assembled conveniently through the plug, the second guide rail plates are arranged on the two sides of the machining table, the guide clamping plates are arranged on the second guide rail plates, the limiting lugs are arranged at one ends of the guide clamping plates, the locking rods can be installed through the limiting lugs, and the pressing head can be controlled to be pressed and fixed through the locking rods. The position of the clamp can be controlled flexibly, and use is convenient; a waste residue collecting opening is formed in the middle of the machining table, and waste residues generated in the machining process can be collected through the waste residue collecting opening.
Owner:MONTEREY (JIANGSU) INTELLIGENT EQUIP CO LTD

Submerged-arc welding flat characteristic current preset control circuit

ActiveCN222626442UEliminate unpredictable problemsprecise and stable controlArc welding apparatusPower inverterControl theory
The utility model discloses a submerged arc welding flat characteristic current preset control circuit, and belongs to the technical field of high-power inverter submerged arc welding machines. Comprising a proportional integral circuit, a signal following circuit and a signal amplification circuit which are respectively connected with the proportional integral circuit, a first signal attenuation filter circuit connected with the signal following circuit, and a second signal attenuation filter circuit connected with the signal amplification circuit. According to the utility model, actual current is input through the first signal attenuation filter circuit, preset current is input through the second signal attenuation filter circuit, and calculation processing is carried out by the proportional integral circuit, so that the current output by the submerged-arc welding flat characteristic current preset control circuit fluctuates within a small range of the preset current; the problem that the welding current cannot be predicted can be solved, meanwhile, when the welding wire is replaced and the extension length of the rod is adjusted, the actual welding current can be stably and accurately controlled, and the welding efficiency and quality are improved.
Owner:SICHUAN MORROW WELDING DEV

BTTRZ corrugated copper sheath mineral insulated fireproof cable production line

The invention discloses a BTTRZ corrugated copper sheath mineral insulated fireproof cable production line which comprises a cable core pay-off machine, a copper strip winding disc, a traction machine, an embossing machine, an extruding machine and a take-up machine, and the cable core pay-off machine, the traction machine, the embossing machine and the extruding machine are sequentially arranged in the direction from the copper strip winding disc to the take-up machine. A copper pipe cable core forming device used for pressing a copper strip into a copper pipe is arranged between the copper strip winding disc and the traction machine. The copper pipe cable core forming device comprises a supporting table, a copper strip trimming unit, a copper strip pipe forming unit and a copper pipe welding and coating unit, wherein the copper strip trimming unit, the copper strip pipe forming unit and the copper pipe welding and coating unit are sequentially arranged on the supporting table from the copper strip winding disc to the moving direction of the cable dragged by the dragger. A copper strip wire winding disc is arranged between the copper strip winding disc and the copper pipe cable core forming device. According to the invention, a copper strip can be quickly trimmed and rolled to form a copper pipe, a cable core is wrapped in the copper pipe to be welded to form a copper cylinder sheath, the forming of the copper pipe can be accurately and stably controlled, and the production quality of a cable is improved.
Owner:GUANGXI NANJIA CABLE TECH CO LTD

Pressure control device and method for non-closed constant-flow output

The invention discloses a non-closed constant-flow output pressure control device and method, and the device comprises a gas source assembly which is used for providing needed gas; one end of the pressure pipeline is connected with the air source assembly, and the other end is communicated to atmosphere; the first flow adjusting assembly is arranged on the pressure pipeline; the second flow adjusting assembly is arranged on the pressure pipeline and located on the downstream of the first flow adjusting assembly. The first pressure adjusting part and the first flow adjusting assembly are connected into the pressure pipeline in parallel; one end of the second pressure adjusting part is connected to the pressure pipeline and located between the first flow adjusting assembly and the second flow adjusting assembly, and the other end of the second pressure adjusting part communicates with the atmosphere; the first pressure adjusting piece and the second pressure adjusting piece conduct pressure increasing and pressure reducing adjustment on gas in the pressure pipeline correspondingly so that the pressure of the gas can be adjusted to be within the target pressure range. The problem that in the prior art, the pressure of a non-closed constant-flow output system is difficult to accurately and stably control is solved.
Owner:BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA

Equipment control method and system based on deep learning

The invention discloses an equipment control method and system based on deep learning, and relates to the technical field of compressor control, and the method comprises the steps: obtaining a historical normal sequence and a current operation sequence, and carrying out the preprocessing to obtain a historical feature data set and a current feature data set; calculating the attention weight of each feature under each time scale based on the historical feature data set; dividing the historical feature data set and the current feature data set to obtain a historical fusion window and a current fusion window under each time scale; combining the attention weight to calculate a fusion value and construct a fusion sample, and obtaining a historical fusion sample set and a current fusion sample under each time scale; constructing and training a prediction model to obtain an effective prediction model under each time scale; and calculating a comprehensive valve opening value at the next sampling moment based on the current fusion sample and the effective prediction model. According to the method, the valve opening of the compressor can be accurately predicted, and the high-precision control requirement of the compressor under the complex working condition is met.
Owner:QINGDAO COMPRIS ENERGY TECH CO LTD

A constant temperature and humidity tea fermentation device

ActiveCN224734625UAchieve cyclic and uniform transportationavoid stranded
This utility model relates to the technical field of tea processing equipment and discloses a constant temperature and humidity tea fermentation device, including a fermentation chamber with a control panel integrated on the side. This constant temperature and humidity tea fermentation device utilizes a closed-loop airflow circulation system composed of a circulating fan, a serpentine air duct, and directional nozzles, combined with the mesh design of a breathable fermentation cylinder, to achieve uniform and cyclical delivery of warm and humid airflow. The circulating fan continuously draws in gas from the chamber, generating airflow circulation power. After being diverted by the serpentine air duct, the airflow is sprayed onto the breathable fermentation cylinder by the directional nozzles. The airflow penetrates the cylinder's ventilation holes, contacts the tea leaves, and then flows back to the circulating fan inlet, forming a complete airflow circulation link. This circulation design allows the warm and humid airflow to repeatedly act on the tea leaves. Combined with the distributed layout of the serpentine air ducts, it avoids local airflow stagnation or excessive impact, ensuring that each tea leaf continuously contacts a stable temperature and humidity environment, significantly improving fermentation uniformity.
Owner:NANJIAN COUNTY HEILONGTAN TEA CO LTD

Control method of low-voltage chopper circuit of welding machine

ActiveCN119511911Aprecise and stable controlProgramme controlComputer controlMicrocontrollerSoft switching
The invention provides a control method for a low-voltage chopper circuit of a welding machine, which relates to the technical field of chopper control, and comprises the following steps of: establishing interface connection between a storage power supply and a target welding machine, identifying circuit topology, calibrating a first circuit element and a second circuit element, excavating fuzzy control logic under the driving control of the circuit elements, and supervising and training a microcontroller; the control circuit is used for receiving welding parameters, sampling circuit electric data, generating a driving signal, assisting the microcontroller to perform directional signal amplification and modulation and introducing resonance to execute soft switching control, and is used for solving the problems that in the prior art, control logic is not clear, signal amplification and modulation response is not accurate, and the control precision is high in the control process of the low-voltage chopper circuit of the welding machine. According to the technical scheme, the technical problem that the welding control effect and stability are limited due to the fact that a fuzzy control strategy is adopted is solved, amplification processing and resonance control of signal driving are carried out based on the fuzzy control strategy by aiming at a specific circuit structure and an auxiliary microcontroller, and therefore more accurate and stable welding circuit control is achieved.
Owner:JIANGSU MICO LASER EQUIP CO LTD

An ion beam online variable beam diameter processing device and beam diameter variable method

The present invention discloses an ion beam online beam diameter changing processing device and a beam diameter changing method thereof. The device of the present invention comprises a base and a top cover. Both the base and the top cover are provided with a central through hole for the ion beam to pass through. The top cover is driven by a motor and rotatably arranged on one side of the central through hole of the base. A side of the base close to the top cover is provided with a plurality of circular holes evenly arranged along the edge of the central through hole. A side of the top cover close to the base is provided with a plurality of guide grooves. A plurality of aperture plates are provided between the base and the top cover to enclose the central through hole to form an aperture hole. A guide column is provided at each end of the aperture plate, and one guide column is inserted and arranged in the circular hole, and the other guide column is slidably arranged in the guide groove. The present invention aims to overcome the problem of repeated switching of vacuum chambers and ion sources during existing ion beam processing to reduce processing efficiency, realize accurate and stable control of the beam diameter changing process, and improve processing accuracy and efficiency.
Owner:NAT UNIV OF DEFENSE TECH

Megawatt anion exchange membrane water electrolysis hydrogen production integrated system

ActiveCN224212788UImprove efficiencyprecise and stable controlCellsElectrolytic agentElectronic systems
The utility model relates to a megawatt anion exchange membrane water electrolysis hydrogen production integrated system which comprises an electrolytic bath subsystem comprising a plurality of large standard AEM electrolytic baths and is used for water electrolysis hydrogen production. The electrolyte circulation subsystem is used for providing electrolyte and maintaining circulation; the oxygen treatment subsystem is used for drying and dehydrogenating oxygen; the drying and purifying subsystem is used for drying, deoxidizing and purifying the hydrogen; the purging subsystem is used for purging the residual gas; the power supply and distribution subsystem is used for supplying power; the heat dissipation subsystem is used for cooling and heat dissipation; and the centralized control subsystem is used for controlling the whole integrated system. According to the utility model, the centralized control subsystem is adopted to realize remote control and real-time monitoring on the whole integrated system, so that the whole integrated system is in an optimal operation state, and the efficiency and the dynamic response rate are effectively improved; according to the utility model, the purging system is adopted to purge residual gas, so that the safety of the system is improved; and the low-concentration alkaline liquid is adopted, and hydrogen is removed from oxygen, so that the environmental protection property is effectively improved.
Owner:SHENZHEN WENSHI HYDROGEN ENERGY TECH CO LTD

Process for efficiently recovering tin, copper and silver in kesterite based on sulfur potential and oxygen potential regulation and control method

PendingCN122038787AGood process adaptabilityAlleviate industry pressureProcess efficiency improvementSlagCassiterite
The invention discloses a process for efficiently recovering tin, copper and silver in kesterite based on a sulfur potential and oxygen potential regulation and control method. The process comprises the following steps that the kesterite, a vulcanizing agent, a reducing agent and a solvent are mixed and granulated; the obtained materials are subjected to volatilization smelting, and tin-containing smoke dust, copper matte and furnace slag are obtained; during smelting, the sulfur potential of a system is controlled to be log pSO2 = 1.0 + / -0.5, and the oxygen potential of the system is controlled to be log pO2 =-7 + / -0.5; mixing the obtained tin-containing smoke dust with a reducing agent and a solvent, and carrying out reduction smelting; and then a reducing agent is supplemented, the temperature is increased, zinc evaporation smelting is conducted, and crude tin, secondary smoke dust and furnace slag are obtained. The technology is good in adaptability, the tin-copper-silver bulk concentrate can be directly treated, low-grade raw materials which are difficult to treat through a traditional technology can be effectively utilized, efficient recycling of valuable metal such as tin, copper, silver and zinc is achieved, and the content of the valuable metal in slag is low.
Owner:HUNAN RES INST FOR NONFERROUS METALS CO LTD

Biomass gas-carbon-oil co-production device and method based on microwave rapid pyrolysis

The invention discloses a biomass gas-carbon-oil co-production device and method based on microwave rapid pyrolysis, and relates to the technical field of biomass microwave pyrolysis and efficient conversion. Comprising a microwave generator, a fluidized bed furnace, a cyclone separator, a catalytic cracking device, a condensing device, an adsorption device, a pressure swing adsorption device, an SOFC power generation device and an adsorbent regeneration device, microwave generators are arranged on the fluidized bed furnace, the cyclone separator and the catalytic cracking device; a carbon powder collecting device I is arranged at the bottom of the fluidized bed furnace; a carbon powder collecting device II is arranged at the bottom of the cyclone separator; a catalyst bed layer is arranged in the catalytic cracking device; an adsorbent bed layer is arranged in the adsorption device; carbon residue in the carbon powder collecting device I is used as a reducing agent, and the used catalyst bed layer and adsorbent bed layer are reduced in an adsorbent regeneration device; and the SOFC power generation device is electrically connected with the microwave generator and the adsorbent regeneration device. According to the method, high-value utilization of the biomass gas charcoal oil can be realized.
Owner:SOUTH CHINA UNIV OF TECH