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Active inertia supporting method, device and equipment for energy-storage-free photovoltaic grid-connected system
PendingCN121791334AExpand the boundaries of stable operationStable responseSingle network parallel feeding arrangementsArtificial life
The invention provides an active inertia supporting method, device and equipment for an energy-storage-free photovoltaic grid-connected system, and relates to the technical field of new energy grid-connected power generation and intelligent control. The method comprises the following steps: constructing a direct current-alternating current double-side dynamic model of the energy-storage-free photovoltaic grid-connected system; constructing a total objective function according to the direct current-alternating current double-side dynamic model; the total objective function comprises a plurality of objective functions and penalty functions; taking the power reservation coefficient and the virtual rotational inertia as individuals, and taking a plurality of target functions as a multi-target task cooperation whale optimization algorithm to obtain a Pareto front; respectively inputting individuals in the Pareto frontier into the total objective function to determine an optimal individual; and dynamically introducing the optimal individual into a control module of the grid-forming type virtual synchronous generator through a smooth transition function, so that the energy-storage-free photovoltaic grid-connected system operates in an optimal state. According to the invention, voltage and frequency fluctuation can be effectively suppressed, system stability and photovoltaic utilization rate are both considered, and operation cost is reduced.
Owner:STATE GRID HEBEI ELECTRIC POWER RES INST +1
Hydrogen supply proportional valve current control method based on fuel cell system
PendingCN119481172AStable responseSolve job instabilityReactant parameters controlTransient stateThermodynamics
The invention relates to a hydrogen supply proportional valve current control method based on a fuel cell system. The method comprises a non-differential current control mode and / or a differential current control mode. The differential current control mode comprises the following steps: controlling the dynamic operation flag bit of the electric pile, judging the operation state of the electric pile according to the dynamic operation flag bit of the electric pile, and determining that the electric pile is in a transient working condition or a steady working condition; when the galvanic pile is in a transient state working condition or a steady state working condition, acquiring a feedforward step length of the hydrogen supply proportional valve, and determining a feedforward duty ratio of the hydrogen supply proportional valve according to the feedforward step length of the hydrogen supply proportional valve; when the galvanic pile is in a steady-state working condition, obtaining a galvanic pile pressure closed-loop correction duty ratio; and the indifference current control mode comprises the steps of carrying out driving control on a driving target current of the hydrogen supply proportional valve of the electric pile and controlling the duty ratio of the hydrogen supply proportional valve. According to the invention, the hydrogen supply proportional valve can realize hydrogen supply quick response at different pile variable load speeds.
Owner:WUXI WEIFU HIGH TECH CO LTD
Machine learning based hierarchical system energy consumption prediction method and system
ActiveCN121052443Bconsensus predictionconsistent accountingForecastingBiological modelsLearning basedProduction line
The application discloses a hierarchical system energy consumption prediction method and system based on machine learning, and particularly relates to the field of processing energy consumption prediction, and is used for solving the problem of powder processing production line grading energy consumption prediction deviation, and is through constructing a multi-source time sequence account book to draw the context from drying to grading into a traceable line, to make the origin and destination of energy consumption fluctuation clear, and to combine prediction to no longer stop at static experience, but to follow the propagation path and screen surface work to depict the real load, to obtain the energy consumption impact degree through the penetration time difference density and the accumulated release work amount, and the operation side to generate the cost impact label and the time slot priority according to the energy consumption impact degree, the order energy consumption layering close to the field rhythm, the prediction and accounting more consistent, the online checking to revise the alignment deviation with small steps, the short-time fluctuation convergence, the long-period cost curve tends to be smooth, and at the same time, the clear evidence chain is retained, and the review is based on evidence, and under the alternation of batches and beats, the stable response is still maintained, and the settlement deviation caused by misjudgment is reduced.
Owner:SHANGHAI CHENYANG NEW MATERIAL CO LTD
Flight simulator joystick control force control method and system based on adaptive sliding mode observer
The invention discloses a flight simulator joystick control force control method and system based on a self-adaptive sliding mode observer, and relates to the technical field of automatic control. The problems that a controller in an existing flight simulator faces strong coupling, a nonlinear system with various interferences and parameter perturbation exists, and large overshoot, poor robustness and the like are prone to occurring in the control process are solved. The method comprises the following steps: S1, constructing a current equation of the servo motor under a static coordinate system; s2, defining a sliding mode surface function, and designing an adaptive sliding mode observer according to the sliding mode surface function; s3, designing an adaptive law of the back electromotive force; and S4, controlling the servo motor according to the adaptive sliding-mode observer and the adaptive law of the back electromotive force. The method is applied to flight simulator control.
Owner:中国人民解放军93199部队理论训练系
Energy storage optimization configuration method for load side of power distribution network
InactiveCN119448342AImprove stabilityImprove reliabilityElectrical storage systemFlicker reduction in ac networkSensitive analysisElectric power system
The invention relates to a power distribution network load side energy storage optimization configuration method, which comprises the following steps: firstly, collecting power grid load data, obtaining the load range of each node and the load range of each line through load flow calculation, then judging the regulation requirement of a new energy power system to be accessed according to the head end voltage of a feeder line, new energy active power output and new energy reactive power output, and finally determining the energy storage optimization configuration of the load side of the power distribution network. Based on an objective function and constraint adjustment, an independent energy storage economic model and a multi-objective hybrid energy storage optimal configuration model are respectively established, simulation operation and sensitivity analysis are performed on the independent energy storage economic model, and optimization solution is performed through a genetic algorithm, so that optimal energy storage capacity and charging and discharging power are obtained. And performing a particle swarm optimization algorithm on the multi-target hybrid energy storage optimal configuration model so as to obtain proper hybrid energy storage rated capacity and rated power. In general, the method has the advantages of being reasonable, efficient and good in overall economical efficiency.
Owner:XUCHANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
A key switch circuit based on bistable circuit and printer
The utility model discloses a kind of key switch machine circuit and printer based on bistable circuit, wherein, key switch machine circuit based on bistable circuit, including power supply conversion unit, self-locking circuit and button, bistable circuit;The enable end of power supply conversion unit is connected by self-locking circuit and button, bistable circuit;Power supply conversion unit is used to convert input power supply into working power supply, and its enable control end is used to control power output;Self-locking circuit is used to pull low the enable end of power supply conversion unit after button is pressed and maintain low level, realize the self-locking of power output;Bistable circuit is used to change output state when button is pressed again, cut off self-locking circuit, so that the enable end of power supply conversion unit restores high level, to close power output.The utility model discloses the key switch machine circuit based on bistable circuit of the utility model, using single self-resetting button can complete the opening and closing of power supply, and, circuit response is stable, operation logic is clear.
Owner:XIAMEN CASHINO ELECTRONICS TECH CO LTD
Deepwater structure health monitoring method and system
ActiveCN121954133ASolve problems prone to pathological instabilityStable full-field reconstructionMeasurement devicesStructure health monitoringData acquisition
The invention discloses a deepwater structure health monitoring method and system. The method comprises the following steps: establishing a discrete model and constructing a unit strain matrix; collecting single-side surface strain data and establishing a mapping relation between single-side surface theoretical strain and node displacement; constructing a unilateral inverse finite element data fitting item comprising a surface strain fitting item and a lateral shear strain penalty item; constructing a geometric guidance hybrid regularization term consisting of a membrane regularization term and a bending regularization term; assembling a global equation to solve full-field displacement; and recovering full-field strain and stress and outputting a monitoring result. The system comprises a data acquisition module, a preprocessing and inverse reconstruction module, a stabilization solving module and a visual output module. According to the full-field response sensing scheme based on unilateral inverse finite element and geometric guidance mixed regularization, stable and high-precision inversion of full-field displacement, strain and stress of the structure can be realized under the condition of only depending on unilateral sparse sensing data, and the dependence of a traditional method on bilateral sensing arrangement is effectively broken through.
Owner:TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL
A MIL-100(Fe)-derived ErFeO3 / α-Fe2O3 gas-sensitive material, its preparation method and application
This invention relates to a MIL-100(Fe)-derived ErFeO3 / α-Fe2O3 gas-sensitive material, its preparation method, and its application, belonging to the field of gas sensor and environmental monitoring technology. A method for preparing a MIL-100(Fe)-derived ErFeO3 / α-Fe2O3 gas-sensitive material involves: slowly adding FeCl3 solution dropwise to H3BTC solution at room temperature; after uniform mixing, maintaining the mixture at 150℃~210℃ for 20 hours in a reaction vessel to obtain an orange-red substance; washing and drying to obtain MIL-100(Fe); dispersing the obtained MIL-100(Fe) in methanol; dissolving Er(NO3)3·6H2O in the above solution and reacting for a period of time; washing, centrifuging, and drying; transferring the obtained product to a muffle furnace and calcining under an oxygen atmosphere to obtain the ErFeO3 / α-Fe2O3 gas-sensitive material. The method for preparing porous metal oxide-based gas-sensitive materials using MOF materials as precursors and rare earth element modification proposed in this invention has advantages such as versatility, controllability, and recyclability compared to traditional methods for preparing metal oxide-based gas-sensitive materials.
Owner:SHENZHEN AIDUOKE SENSOR TECH CO LTD +1
A method for preparing paper-based cobalt-doped terbium metal-organic framework material
ActiveCN116623463Breduce distancereduce lossesLuminescent/fluorescent substance additionLuminescent compositionsLanthanideElectrochemiluminescence
The present invention provides a method for preparing a paper-based cobalt-doped terbium metal-organic framework material with reasonable design and simple operation. Isophthalic acid is used as a metal ion ligand to prepare a cobalt-doped terbium metal-organic framework. The prepared cobalt-doped terbium metal-organic framework material can be used as an electrochemiluminescent luminescent reagent and a co-reaction promoter. The cobalt-doped terbium metal-organic framework has a larger pore size and volume, a higher surface area and a lower electron transfer resistance, which makes it easier for reactants and active intermediates to approach the electrochemiluminescent internal luminescent reagent, thereby improving the electrochemiluminescent emission performance. At the same time, the catalytic effect of cobalt ions on hydrogen peroxide can be used to construct an electrochemiluminescence mechanism in which a double co-reaction promoter enhances the signal intensity, thereby amplifying the electrochemiluminescence signal. The lanthanide metal-organic framework has the advantages of high sensitivity, wide detection range, stable response, etc., and has broad application prospects in the field of electrochemiluminescence.
Owner:UNIV OF JINAN
VanR in-vitro transcription factor sensor responding to vanillic acid
PendingCN119504961AStable responseStrong specificityHydrolasesMicrobiological testing/measurementRestriction Enzyme Cleavage SiteMethyltransferase
The invention discloses a VanR in-vitro transcription factor sensor responding to vanillic acid, and belongs to the field of biological detection. According to the method, an allosteric transcription factor VanR from Corynebacterium glutamicum is taken as a recognition element, restriction enzyme Nb.BbvCI causing single-chain breakage, DNA polymerase and a double-chain transduction DNA fragment (wherein a VanR recognition site and a Nb.BbvCI restriction enzyme cutting site are overlapped) are used, the reaction is carried out at room temperature, a fluorescence value is detected in real time through a microplate reader, and the result shows that the result is accurate and reliable. The method has the advantages of being rapid in identification and suitable for portable equipment. The in-vitro VanR biosensor provided by the invention has a better application prospect, and can be used for high-throughput screening of a rate-limiting enzyme O-methyltransferase (OMT) in a vanillin biosynthesis process.
Owner:SHENZHEN SIYOMICRO BIO TECH CO LTD
Battery pack display soc control method and device, medium and battery management system
This application discloses a battery pack display SOC control method, device, storage medium, and battery management system. The method includes: acquiring the current SOC to be displayed, the previous displayed SOC, and the current charge / discharge end calibration voltage; determining the current mapping rate based on the upper limit of SOC corresponding to the current charge end calibration voltage and the lower limit of SOC corresponding to the current discharge end calibration voltage; and mapping the current SOC to be displayed to the final displayed SOC using a preset charge / discharge mapping method based on the battery's charge / discharge state, the previous displayed SOC, and the current mapping rate. This application determines the mapping rate based on the upper and lower limits of SOC during charge / discharge, and combines this with an incremental accumulation algorithm to map the SOC to be displayed, enabling the SOC to be intelligently, smoothly, and user-orientedly mapped to the displayed value.
Owner:BESCORE NEW ENERGY TECH (QINGDAO) CO LTD
Training method of flood detection model and flood detection method
This invention provides a training method for a flood detection model and a flood detection method, relating to the field of image processing technology. The method includes: inputting sample optical remote sensing images and sample SAR remote sensing images into an optical image encoder and a SAR image encoder, respectively, to obtain optical coding features and SAR coding features corresponding to different resolution levels; determining general features corresponding to each resolution level through a gated adaptive fusion module; obtaining fused features based on the general features, optical coding features, and SAR coding features corresponding to each resolution level; decoding the fused features corresponding to each resolution level to obtain a flood prediction probability map; and adjusting parameters based on the flood prediction probability map and the flood ground truth map to obtain a flood detection model. This invention reflects the commonalities of multiple images through general features, and then adaptively fuses the general features and various modal coding features, effectively suppressing interference and improving the accuracy of the flood detection model.
Owner:TSINGHUA UNIVERSITY
A scalable distributed multileaf chamber open-path photosynthesis measurement system and method
PendingCN122084829Aachieve precisionAchieve high-throughput unificationMaterial analysisGas analysisOpen path
This invention discloses a scalable distributed multi-chamber open-path photosynthetic measurement system and method, relating to the field of plant physiological and ecological measurement technology. The system includes a main unit and at least two distributed chambers. The main unit centrally manages gas supply, concentration mixing, flow control, and high-precision concentration differential analysis. Each chamber is an independent unit, equipped with an adjustable LED light source, thermoelectric temperature control module, multiple types of sensors, independent power supply, and wireless communication module. An open path is formed through the gas supply pipeline and the return pipeline. The core of the method lies in the main unit polling and sampling the return gas from each chamber according to a preset program through a multi-channel automatic switching valve group. Combined with a "flushing stabilization" strategy, a single gas analysis unit is used to achieve high-precision, high-throughput parallel measurement of multiple chambers. This invention solves the problems of low throughput and high cost of traditional open-path instruments, achieving a balance between high precision and high throughput, and supports in-situ deployment in the field and remote monitoring.
Owner:YANGZHOU UNIV
Virtual synchronous machine comprehensive control method based on optimal power compensation and inertia damping self-adaption
PendingCN121984112Asuppress overshootOscillation suppressionSingle network parallel feeding arrangementsMathematical modelDiscretization
The invention discloses a virtual synchronous machine comprehensive control method based on optimal power compensation and inertia damping self-adaption, and belongs to the technical field of virtual synchronous machine control in a micro-grid. The method comprises the following steps: firstly, establishing a mathematical model of a virtual synchronous machine (VSG), analyzing the influence of parameters such as virtual inertia and virtual damping on system stability, and realizing online adaptive adjustment of virtual parameters based on a radial basis function neural network (RBF); and then, constructing a discretization prediction model according to an active-frequency relation of the VSG, setting an optimization target based on angular frequency deviation and output active power, designing a corresponding cost function, and solving an optimal power compensation amount through quadratic programming so as to adjust an active reference value of the VSG in real time. Compared with the prior art, overshoot and oscillation of power and frequency can be effectively restrained, the frequency change rate and deviation are reduced, and the power frequency response speed is increased.
Owner:XINJIANG UNIVERSITY
Vehicle-mounted toll terminal with local AI computing power and voice interaction and implementation method
The application discloses a vehicle-mounted charging terminal with local AI computing power and voice interaction function and an implementation method, the vehicle-mounted charging terminal comprising a hardware module and an AI voice interaction module in communication connection; the hardware module comprises a main control and storage unit, a local AI computing power unit, a multi-modal microphone array, a voice output unit and a transaction function unit; the AI voice interaction module comprises a voice wake-up unit, a local AI voice engine, an AI computing power scheduling unit and a function linkage unit. The application constructs a local AI computing power architecture, breaks away from dependence on the cloud, realizes millisecond-level processing of voice instructions and provides excellent user experience.
Owner:TIANJIN RUITONG INTELLIGENT TECH CO LTD
Spring operating mechanism and method for circuit breaker
PendingCN122267019AImprove rigidityImprove movement stabilityContact driving mechanismsSwitch power arrangementsElectric machineControl engineering
The application discloses a spring operating mechanism and method for a circuit breaker, and belongs to the technical field of circuit breakers, which comprises a clamp plate type frame, an energy storage to position clutch, a closing holding and a manual closing soft interlocking device, the clamp plate type frame is fixedly connected by opposite first and second side plates through a supporting piece; an energy storage motor of an energy storage transmission device is connected with an energy storage shaft through a transmission assembly, a cam is arranged on the shaft, and an energy storage holding buckle is arranged; the energy storage to position clutch device is a one-way clutch assembly connecting the transmission assembly and the energy storage shaft; the closing holding device comprises a hinged opening release assembly, a reset elastic piece and a linked output shaft; the manual closing soft interlocking device comprises a sliding manual operating assembly, a closing trigger piece and an interlocking assembly, and is matched with the energy storage holding buckle; the problems of the existing spring operating mechanism for the circuit breaker, such as the reliability, structure, cost or precision related defects of the energy storage clutch device, the manual closing mechanical interlocking, the closing holding structure and the modular mechanism cooperation are solved.
Owner:XIAN HERO SWITCHGEAR CO LTD
Interconnected power grid mutual protection and mutual aid scheduling method based on credit difference pricing and PTDF constraint
PendingCN121984106AImprove power supply reliabilityImprove toughnessAc network load balancingInformation technology support systemDecision modelElectric power system
The invention relates to the technical field of power systems, and discloses an interconnected power grid mutual protection and mutual aid scheduling method based on credit difference pricing and PTDF constraint, and the method comprises the steps: constructing a region coordination optimization model and a main body response optimization model; the regional coordination optimization model is used as an upper layer decision-making model, and takes multi-target comprehensive optimization of settlement expenditure, safety out-of-limit, load lack supply and electricity abandoning punishment as a target; the main body response optimization model is a lower-layer execution unit, and after each power transmission side main body receives a power transmission instruction of the upper-layer decision model, output optimization is carried out on the premise of meeting unit operation constraints by taking internal power generation cost minimization as a target; and solving the regional coordination optimization model and the subject response optimization model to obtain a scheduling scheme. The method has the advantages that the power supply reliability, the safety toughness and the resource allocation efficiency of the interconnected power grid are remarkably improved on the premise that the system operation cost is increased in a limited mode, and collaborative optimization of economy, safety and credit value is achieved.
Owner:GUO JIA DIAN WANG YOU XIAN GONG SI XI NAN FEN BU
Modal controller generation method, medium, and apparatus for a nanopositioning platform
PendingCN122593100AEnsure it is implementablereliable design
The present application relates to the technical field of ultra-precision machining control, and particularly relates to a modal controller generation method for a nano-positioning platform, a medium and equipment. The present application performs zero-pole decomposition on a transfer function of a controlled object, separates stable zero points, unstable zero points, non-resonant poles and resonant poles, constructs a desired inner loop closed-loop transfer function, retains the stable zero points, the unstable zero points and the non-resonant poles, and replaces the resonant poles as a whole with high-damping desired poles, inversely solves to obtain a modal controller structure, introduces zero-pole cancellation constraints to eliminate controller instability caused by unstable zero points, introduces order constraints to ensure causal realizability, applies constraints with a damping ratio greater than 0.1 to the desired poles and the introduced new zero points respectively, and outputs an inner loop modal controller. The present application realizes simultaneous suppression of multiple resonant peaks, gets rid of dependence on a low-order model, ensures stability, realizability and smoothness of a control signal of the controller, and significantly improves control bandwidth and dynamic performance.
Owner:SHANGHAI JIAOTONG UNIV
An in-situ dynamic soil and groundwater arsenic pollution remediation technology based on ferric arsenate-based material
ActiveCN120155450BEffectively regulate release kinetic behaviorRelease is slow and sustained
The present application relates to a kind of in-situ dynamic soil and groundwater arsenic pollution remediation technology based on arsenate iron-based material.The technology is synergized with persulfate and other oxidants by the slow-release ferrous salt capsule of innovative design, to generate arsenate in-situ in the contaminated area, to realize the efficient immobilization of arsenic. At the same time, the electrochemical regulation technology and intelligent monitoring feedback system are combined, the redox conditions of groundwater are dynamically optimized, the remediation process is accurately controlled, and the complex pollution environment is adapted. The technology has the advantages of high efficiency, economy, environmental protection, high intelligent degree, etc., and can effectively remediate arsenic pollution in soil and groundwater.
Owner:SHANDONG NORMAL UNIV
An autonomous navigation method and system for a patrol robot in a GPS-free environment
PendingCN122281903AEliminate interpretation errorsEliminate control command disorderPattern recognitionReal-time data
This invention discloses an autonomous navigation method and system for inspection robots in GPS-free environments, relating to the field of robot autonomous navigation technology. The invention includes: receiving pre-collected scene visual data in a GPS-free environment; processing and analyzing the scene visual data using a V-SLAM algorithm to obtain real-time pose data of the inspection robot in the visual sensor coordinate system, providing a real-time data source for subsequent coordinate transformation; wherein the scene visual data is a sequence of binocular images collected by a visual tracking camera mounted on the inspection robot; and constructing a coordinate transformation matrix to convert the pose data in the visual sensor coordinate system obtained by the V-SLAM algorithm into pose information in the vehicle control coordinate system. This invention improves trajectory estimation accuracy through a V-SLAM method integrating visual-driven filtering, ultimately achieving high-precision, high-reliability autonomous navigation of the inspection robot in complex GPS-free environments, free from GPS dependence.
Owner:SOUTHEAST UNIV
Detection equipment and detection method for blood medical examination
ActiveCN119333695Areduce shakingImprove job stabilityMaterial analysis by electric/magnetic meansStands/trestlesHematological testMass analyzer
The invention relates to the technical field of mass spectrometers, in particular to detection equipment and a detection method for blood medical examination, and the detection equipment comprises a bottom plate, a supporting plate, a mass spectrometer and an auxiliary control mechanism; a rotary hinging seat is rotationally arranged on the bottom plate, and at least three universal wheels are arranged at the bottom of the bottom plate; a fixed hinge seat and an electric push rod are arranged on the supporting plate; the fixed hinge seat is hinged to the rotary hinge seat; the number of the electric push rods is at least three, and the multiple electric push rods are distributed in a circular array mode relative to the axis of the rotary hinge base. The electric push rod comprises a telescopic piston rod, a spherical abutting block is arranged at the end, away from the supporting plate, of the piston rod, and the spherical abutting block abuts against the bottom plate under driving of the electric push rod. An electronic level meter is arranged on the supporting plate; the mass spectrometer is mounted on the supporting plate; the auxiliary control mechanism is used for connecting the bottom plate and the supporting plate. The problem that the mass spectrometer shakes due to the fact that traditional detection equipment consumes long time to maintain the horizontal state of the mass spectrometer is solved.
Owner:延安市人民医院
Platinum nanoparticle antifouling oxidation reduction metal electrode based on MOF material modification and preparation method and application thereof
PendingCN122016969Asmall particle sizeLarge specific surface areaMaterial electrochemical variablesNanoparticleRedox
The invention provides a platinum nanoparticle antifouling oxidation reduction metal electrode based on MOF material modification and a preparation method and application thereof, and belongs to the technical field of marine pollution detection. The preparation method comprises the following steps: carrying out electrodeposition on a platinum-based electrode by using K2PtCl4 and CTAB to form a platinum nanoparticle substrate, then mixing BDC-F4 and ZrO (NO3) 22H2O by using a hydrothermal reaction to form a UiO-66-F4 MOF material, and finally putting the electrode into a solution to obtain Pt NPs at UiO-66-F4. The prepared electrode can inhibit adhesion of organic macromolecules in seawater, and has excellent stability.
Owner:ZHEJIANG UNIV
Intelligent control power light lithium battery pruning machine
ActiveCN224368476USimple structurereduce friction lossCutting implementsCuttersElectric machineGear wheel
This utility model provides an intelligent force-controlled lightweight lithium-ion battery pruning machine. The machine includes a cutting blade and comprises a motor housing, a gear reduction mechanism, and an eccentric wheel. The motor housing has a motor output end. The gear reduction mechanism is connected to the motor output end and includes a rotating shaft. The eccentric wheel is fixed on the rotating shaft and connected to one end of the cutting blade. The gear reduction mechanism also includes a connecting end, and an oil seal mechanism is provided between the connecting end and the motor output end. This utility model solves the problem of excessive internal moving parts in pruning machines, leading to repeated friction during high-frequency shearing operations, resulting in a higher failure rate and increased equipment maintenance costs.
Owner:ZHEJIANG ZHONGYONG TOOLS CO LTD
A servo integrated drive circuit based on PID control
The present application discloses a servo integrated drive circuit based on PID control, comprising: a Hall encoding circuit, a PID control circuit, an optocoupler isolator, a drive circuit and a power conversion circuit integrated in the same drive chip. The Hall encoding circuit and the drive circuit are respectively connected to the servo; the Hall encoding circuit is used to detect the position and speed of the servo in real time; the PID control circuit is used to adjust the output PWM signal according to the input working control instruction and the feedback control instruction output by the Hall encoding circuit, and is connected to the drive circuit through the optocoupler isolator; the drive circuit is used to control the position and speed of the servo according to the PWM signal output by the PID control circuit. This solution can greatly simplify the structure of the servo drive circuit, reduce manufacturing costs, and improve system reliability and integration.
Owner:QINGDAO KEKAI ELECTRON INST
Drag chain internal spacer structure facilitating threading
PendingCN122083114ASolve centralized placement needsMeet centralized placement needsHauling chainsHoisting chainsClassical mechanicsChain link
Owner:郭易
Phenylboronic acid-based insulin derivative as well as preparation method and application thereof
PendingCN119301148Aquick responseStable responseMetabolism disorderPeptide/protein ingredientsPhenylboronic acidConcentrations glucose
The invention provides an insulin derivative based on phenylboronic acid and a preparation method and application thereof, and belongs to the technical field of insulin derivatives. The insulin derivative based on boric acid provided by the invention has a good glucose response release function: a phenylboronic acid group is combined with glycosyl protein to generate a phenylboronic acid ester bond, so that an insulin-glycosyl protein complex is generated in situ in blood. When the concentration of glucose in blood is high, the phenylboronic acid ester bond is specifically cut off by glucose, so that insulin is released. The phenylboronic acid-based insulin derivative provided by the invention realizes stable and rapid glucose-responsive insulin release, can stably and durably maintain the blood glucose of a diabetic subject in a normal range, and hardly causes hypoglycemia.
Owner:ZHEJIANG UNIV
Electronic Devices
The present invention relates to an electronic device, comprising a first substrate, a partition wall structure, a pressurizing component, a second substrate, a housing and a plurality of first conductive parts. The first substrate has a through hole and a first surface and a second surface opposite to each other. The partition wall structure is arranged on the first surface and surrounds a first cavity. The pressurizing component is arranged on the partition wall structure and covers the first cavity. The pressurizing component at least includes a mass block and a diaphragm. The housing is arranged on the second substrate and forms a second cavity together with the second substrate. The first cavity is formed in the second cavity. A plurality of first conductive parts are arranged between the first substrate and the second substrate. There is a gap between any two adjacent first conductive parts.
Owner:MERRY ELECTRONICS (SHENZHEN) CO LTD
Emergency power supply management circuit and single-phase three-phase electric meter
ActiveCN118826261BGuaranteed uptimerun fastApparatus without intermediate ac conversionEmergency power supply arrangementsCapacitanceSupply management
The present invention provides an emergency power supply management circuit for a single three-phase electric meter and a single three-phase electric meter. The circuit includes a power management chip, including an LDO constant current charging module, a boost module and a diode D2; a voltage stabilizing unit, including capacitors C4 and C5, for stabilizing the LDO output voltage; a supercapacitor, for storing the energy required for emergency power supply; and an MCU, which is the power consumption end of the emergency power supply management circuit and is used for controlling and monitoring the electric meter. The present invention can effectively provide a stable voltage output when the power supply is interrupted, ensuring the stable operation and rapid response of the system in an emergency.
Owner:杭州得明电子股份有限公司
A fracturing operation monitoring and early warning system and method thereof
ActiveCN121214644Bhigh sensitivityimprove accuracyDesign optimisation/simulationAlarmsEarly warning systemPhysical model
The present application relates to the technical field of fracturing engineering safety monitoring and intelligent early warning, and specifically relates to a fracturing construction monitoring and early warning system and method, which comprises: obtaining an initialized equivalent system resistance and a flow state correction index; constructing a reference physical model; calculating a theoretical pressure value; calculating a deviation index; in response to the deviation index being greater than a preset dynamic judgment threshold, triggering geological state inversion; in response to the deviation index being less than or equal to the dynamic judgment threshold, returning to execute the step of real-time collection of a current real-time pressure value and a current real-time displacement value of a high-pressure grouting pump; inversely solving to obtain an updated equivalent system resistance; calculating to obtain a risk index; generating a hierarchical early warning and decision instruction; and in response to an early warning event confirmation, updating the initialized equivalent system resistance in the reference physical model to the updated equivalent system resistance; the present application realizes the automation and intelligentization of early warning and decision making, ensures construction safety and improves engineering quality.
Owner:DONGYING HUAXING OIL & GAS ENGINEERING CO LTD
Gas supply system and method of controlling the same
The application provides a gas supply system and a control method thereof, which comprises a condenser and a first pipeline, a first flasher, a second pipeline, a compressor and an evaporator, one end of the first pipeline is in liquid communication with the condenser, an inlet end of the first flasher is in liquid communication with the other end of the first pipeline, one end of the second pipeline is in gas communication with the first flasher, the compressor comprises a shell, a first inlet end is arranged on the shell and is in gas communication with the other end of the second pipeline, a first outlet end is also arranged on the shell and is in communication with the evaporator, the shell has a mounting cavity, the first outlet end and the first inlet end are both in communication with the mounting cavity, and a gas supply part is arranged in the mounting cavity. The application generates high-pressure gas by using high-pressure liquid refrigerant in the flasher, discards the high-energy-consumption electric heater scheme, eliminates the heating electric energy consumption from the source, and solves the technical problem of large energy consumption of the compressor gas supply system in the prior art.
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI