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54results about How to "Guaranteed control effect" patented technology

Cross-regional air conditioner regulation and control strategy modeling method and cross-regional air conditioner regulation and control method and system

PendingCN119623246Aavoid damagegood decisionMechanical apparatusBiological modelsCluster basedDistrict cooling
The invention provides a cross-regional air conditioner regulation and control strategy modeling method and a cross-regional air conditioner regulation and control method and system, and is applied to the technical field of intelligent regulation and control of air conditioners. The method comprises the steps that clustering processing is conducted on air conditioner load data of users in all regions, and a clustering result is obtained; constructing a regional cold supply system simulation model corresponding to the clustering cluster based on the users in the same clustering cluster in the clustering result; the operation safety of an actual regional cooling system is considered, modeling is carried out on the regulation and control process of the simulation model based on the Markov decision process, and an optimization strategy model is constructed by taking expected return maximization of a value function corresponding to an operation strategy of the simulation model as a target; and training an optimization strategy model based on simulation operation data of the simulation model. According to the method, the problems that in the process that the DCS participates in power grid load regulation and control, a trial-and-error training-based model is prone to system damage in practical application, and single-model regulation and control cannot guarantee the load regulation and control effect of a whole power grid are solved.
Owner:CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +2

Additional control method of variable-speed wind turbine generator for enhancing system synchronization stability

The invention discloses a variable-speed wind turbine generator additional control method for enhancing system synchronization stability, which comprises the following steps: S1, selecting a plurality of load nodes in a power system, respectively setting power disturbance, and collecting frequency data of all the nodes and frequency data of a variable-speed wind turbine generator within a period of time; calculating a system inertia center frequency according to the frequency data of the generator set; calculating relevancy according to the frequency data of all the nodes and the corresponding system inertia center frequency so as to determine a system inertia center node; s2, calculating a self-adaptive power modulation coefficient according to the frequency corresponding to the inertia center node of the system, the grid-connected node frequency of the variable-speed wind turbine generator and the operation state of the variable-speed wind turbine generator; and S3, calculating the additional power modulation quantity of the variable-speed wind turbine generator according to the self-adaptive power modulation coefficient so as to carry out an additional control strategy. According to the invention, the number of measurement signals required by transient stability control of the variable-speed wind turbine generator can be greatly reduced.
Owner:GUANGZHOU PANYU POLYTECHNIC

Forestry disease and insect pest distribution area determination method

The invention belongs to the field of forestry insect diseases, relates to a data analysis technology, and particularly relates to a forestry insect disease distribution area determination method, which is used for solving the problem of non-ideal insect disease prevention and control effect caused by adopting a single division mode to divide insect disease areas in the prior art. A remote sensing image of a forestry coverage area is obtained through an unmanned aerial vehicle remote sensing technology, and whether the pest state of the forestry coverage area meets the requirement is judged through the remote sensing image. When the requirements are not met, carrying out regional division processing on the forestry coverage region by adopting division modes of grid division, annular division and random division in sequence to obtain grid division regions, grid division values, annular division regions, annular division values, random division regions and random division values; according to the method, a plurality of division modes are adopted to perform area division processing on the forestry coverage area, the division area with the highest coverage rate on the pest and disease damage area is finally screened out, and the division accuracy of the forestry pest and disease damage area is improved.
Owner:山西省桑干河杨树丰产林实验局高山林场

Robust dual three-phase motor dead-beat current control method

The invention discloses a robust dual three-phase motor dead-beat current control method, and the method comprises the steps: building a dual three-phase permanent magnet synchronous motor model, and carrying out the discretization processing; extracting a plurality of groups of inductances under different complex working conditions as inductance parameters of the vertex model; deducing a corresponding adaptive law based on the convex inclusion property, and distributing the weight of each group of inductance parameters through the adaptive law; calculating through the discretized voltage equation to obtain an incremental prediction model, and performing delay compensation on the incremental prediction model; corresponding current values are obtained through the incremental prediction model subjected to delay compensation on each group of inductance parameters subjected to weight distribution; and performing weighted fusion on each group of current values. According to the method, the dual three-phase permanent magnet synchronous motor model is established, the multi-model adaptive law is introduced to distribute the weight of each vertex model, and the incremental dead-beat current control strategy is combined, so that dead-beat current control of the dual three-phase motor is realized, the robustness is good, and the performance deterioration of the motor under parameter mismatch can be effectively reduced.
Owner:XIAMEN KING LONG UNITED AUTOMOTIVE IND CO LTD

Shell assembly, mobile energy storage device and energy storage system

The invention discloses a shell assembly, a mobile energy storage device and an energy storage system.The shell assembly comprises a first shell, a key structure and a circuit board, the first shell is provided with a key via hole penetrating through the interior and the exterior of the first shell, the inner surface of the first shell is provided with a first fixing part, and the key structure comprises a key body and an elastic arm; the key body is arranged in the key via hole in a penetrating mode and provided with a key protrusion in a protruding mode, the elastic arm is located in the first shell and provided with a connecting end and a fixing end which are oppositely arranged in the extending direction of the elastic arm, the connecting end is connected with the key body, the fixing end is connected with the first fixing part, and the circuit board is arranged in the first shell. The circuit board is arranged on one side of the key structure opposite to the key via hole, and the surface of the circuit board facing the key structure is convexly provided with a control key; wherein one of the circuit board and the fixed end is provided with a positioning part, the other one of the circuit board and the fixed end is provided with a matching part, and the matching part is connected with the positioning part in a matching manner, so that the control key is arranged corresponding to the key bulge.
Owner:SHENZHEN HAICHEN EQUAL RIGHTS HERO ENERGY TECH CO LTD +1

SCR (Selective Catalytic Reduction) abnormity judgment method and device based on remote data and electronic system

The invention relates to the technical field of electric digital data processing, in particular to an SCR abnormity judgment method and device based on remote data and an electronic system.The method comprises the steps that first heavy-duty vehicle remote monitoring data of an SCR system in a preset normal state and second heavy-duty vehicle remote monitoring data of the SCR system in a preset abnormal state are obtained, generating a normal state data set of the SCR system and an abnormal state data set of the SCR system; and constructing an SCR system working state judgment model by using the normal state data set and the abnormal state data set, so as to judge the working state of the SCR system of the to-be-detected vehicle by using the SCR system working state judgment model. Therefore, the technical problems that in the related technology, the urea liquid level data recognition precision is low, the urea consumption condition is difficult to accurately obtain, and the working state of the SCR system is difficult to accurately judge due to the fact that quantitative standards formed based on urea consumption abnormity are lacked are solved.
Owner:CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD +1

Basalt fiber multi-plate drawing control method, system, device and medium

ActiveCN120698697BGuaranteed monitoring accuracyEffective viscosity adjustmentGlass making apparatusGlass productionBasalt fiberMechanics
The application discloses a basalt fiber multi-escape plate wire drawing control method, system, device and medium, including the following steps: obtaining the real-time temperature, real-time viscosity, melt flow and target fiber diameter at the target escape plate; inputting the real-time temperature, real-time viscosity, melt flow and target fiber diameter into a preset dynamic balance equation to obtain a dynamic balance index; judging whether the dynamic balance index is greater than a preset index threshold, if yes, inputting the melt flow into a preset flow compensation equation to obtain a flow compensation value; after guiding the wire drawing control process to reach a preset time based on the flow compensation value, judging again whether the dynamic balance index is greater than the preset index threshold; if yes, inputting the real-time temperature into a preset temperature compensation equation to obtain a temperature compensation value, and guiding the wire drawing control process based on the temperature compensation value, the application has the advantages of reasonable planning of priority order of control indicators and improved wire drawing control efficiency.
Owner:CHENGDU SHUHONG EQUIP MFG

System and method for estimating rotor position and rotating speed of permanent magnet synchronous motor

The invention belongs to the field of permanent magnet synchronous motors, and relates to a system and method for estimating the rotor position and rotating speed of a permanent magnet synchronous motor. A second-order generalized integrator is used for replacing a low-pass filter in a traditional sliding mode observer algorithm, high-frequency switching noise and higher harmonics in a counter electromotive force signal are filtered out through the second-order generalized integrator, efficient filtering can be achieved, and phase delay cannot be caused; and meanwhile, the amplitude frequency self-adaptive frequency-locked loop is utilized to realize the self-adaption of the tracking frequency, so that the precision and the dynamic performance of the estimation system can be effectively improved, and the control performance of the permanent magnet synchronous motor is improved. The problem that the control performance of the system is poor due to the sliding mode buffeting effect and higher harmonic noise interference in the high-speed stage of the permanent magnet synchronous motor is solved.
Owner:CHINA AUTOMOTIVE ENG RES INST

A biocontrol fungal spore cultivation device for controlling Japanese pine scale and its usage method

PendingCN122128092ARealize automatic vaccinationPrecise control of inoculation volumeBioreactor/fermenter combinationsFungiBiotechnologySporeling
This invention discloses a biocontrol spore cultivation device and its usage method for controlling Japanese pine scale, belonging to the field of pine scale control technology. The device includes an inoculation unit and several cultivation units. The inoculation unit includes a frame with a chain conveyor inside. Multiple positioning support plates are evenly spaced on the chain conveyor. A pre-compression mechanism and an inoculation mechanism are located directly above the chain conveyor on the frame, both spanning the chain conveyor. Several cultivation units are located at the outlet of the inoculation unit. This invention achieves automatic inoculation of biocontrol spores, improving inoculation efficiency and enabling precise control of the inoculation amount, thus improving the uniformity and consistency of biocontrol spore concentration. Next, the inoculated bottles are transferred to multiple cultivation units for static cultivation to improve the viability and yield of biocontrol spores, meeting the needs of large-scale production.
Owner:ZUNYI INST OF FORESTRY

Flow closed-loop control electric fuel pump with compact space

The utility model provides a flow closed-loop control electric fuel pump with a compact space, which relates to the technical field of fuel pumps and comprises a shell, an inlet pipe joint is fixedly mounted on the left side of the shell, an internal gear pump is fixedly mounted on the right side of the inlet pipe joint, and a direct-current brushless motor is fixedly mounted on the right side of the internal gear pump. A fuel flow measuring device is fixedly installed on the right side of the direct-current brushless motor, a better using effect is achieved, in the using process, the fuel flow measuring device arranged in an oil pipe is adopted, fuel flow closed-loop control is integrated in the electric fuel pump, fuel flow closed-loop control of the electric fuel pump is achieved, and the fuel flow control efficiency is improved. The control effect of the fuel flow is guaranteed, and therefore the situation that when an existing electric fuel pump is used, the fuel flow is represented through rotating speed data of the electric fuel pump, direct measurement control is not conducted on the fuel flow, and only closed-loop control is conducted on the rotating speed of the electric fuel pump so that the corresponding calibrated flow can be achieved is avoided.
Owner:陕西靖航顺通动力科技有限公司

Power-interruption-free electric vehicle two-gear transmission adopting two-stage planetary gears

The invention discloses a power-interruption-free electric vehicle two-gear transmission adopting two-stage planetary gears. The power-interruption-free electric vehicle two-gear transmission comprises a driving motor, a first reduction gear set, an intermediate shaft, a two-stage planetary gear train, a controllable one-way clutch, a second reduction gear set, a differential mechanism, a friction clutch, a transmission shell and the like. The torque output by the driving motor is transmitted to the intermediate shaft after passing through the first reduction gear set; and the intermediate shaft is fixedly connected with the first sun gear. The controllable one-way clutch is used for connecting the transmission shell and the first planet carrier; the friction clutch is used for connecting the first gear ring and the intermediate shaft. And the second reduction gear set is used for reducing the speed and increasing the torque output by the first gear ring and then transmitting the torque to the differential shell. According to the two-gear transmission, six states of first-gear driving, second-gear driving, neutral gear, first-gear regenerative braking, second-gear regenerative braking and reverse running can be achieved by controlling the friction clutch and the controllable one-way clutch in a coordinated mode. And power-interruption-free gear shifting between the first gear and the second gear can be achieved.
Owner:JILIN UNIVERSITY

Application of Peiyuan Gubenfang in reducing the toxicity of adjuvant chemotherapy after radical resection of non-small cell lung cancer

PendingCN122075648AImprove postoperative frailtyImprove weak constitutionAntinoxious agentsRespiratory disorderAdenophora strictaWolfiporia extensa
This invention belongs to the field of traditional Chinese medicine technology, specifically relating to the application of a formula for nourishing vital energy and strengthening the body in reducing the toxicity of adjuvant chemotherapy after radical resection of non-small cell lung cancer. This invention discloses a formula for nourishing vital energy and strengthening the body, characterized in that it is composed of the following components by weight: 15-30 parts raw Astragalus membranaceus, 9-21 parts prepared Rehmannia glutinosa, 15-30 parts stir-fried Dioscorea opposita, 9-15 parts Atractylodes macrocephala, 9-15 parts Poria cocos, 15-30 parts raw Coix lacryma-jobi, 9-15 parts Ophiopogon japonicus, 9-15 parts Asparagus cochinchinensis, 15-30 parts Adenophora stricta, 9-15 parts Ligustrum lucidum, 9-15 parts Eclipta prostrata, 9-15 parts stir-fried germinated barley, 9-15 parts stir-fried malt, and 3-6 parts prepared Glycyrrhiza uralensis. This invention can restore vital energy, reverse postoperative weakness, build a foundation for chemotherapy tolerance to reduce toxic side effects, improve chemotherapy tolerance, reduce the risk of interruption to ensure efficacy, improve quality of life during chemotherapy, and help prolong postoperative survival.
Owner:SHANGHAI PULMONARY HOSPITAL (SHANGHAI OCCUPATIONAL DISEASE PREVENTION & CONTROL INSTITUTE)

A method for controlling the main steam temperature of an ultra-supercritical unit

This invention discloses a method for controlling the main steam temperature of an ultra-supercritical unit. An extraction valve is added to the extraction steam pipeline of the high-pressure heater to achieve precise extraction steam throttling adjustment. Thermodynamic parameters of the boiler and turbine systems are collected and cleaned. The feedwater heating insufficiency and reheat steam flow rate changes corresponding to the unit extraction steam throttling flow rate under different high-pressure heater extraction steam throttling schemes are calculated. Furthermore, the heat absorption changes of the economizer and part of the superheater heating surfaces after the reheater are calculated. Finally, the predicted value of the main steam temperature change corresponding to the unit extraction steam throttling flow rate under different high-pressure heater extraction steam throttling schemes is obtained. Based on the real-time deviation of the main steam temperature, the high-pressure heater extraction steam throttling scheme and the required extraction steam throttling flow rate are selected. By adjusting the extraction steam throttling flow rate of each high-pressure heater, more precise control of the main steam temperature is achieved, alleviating the problem of main steam overheating that easily occurs during rapid load increases. This is of great significance for improving the operational flexibility of ultra-supercritical units.
Owner:HUANENG PINGLIANG POWER GENERATION CO LTD +2

A mud generator torque control method and system

The application discloses a mud generator torque control method and system, and belongs to the technical field of well drilling engineering. The method comprises the following steps: performing phase identification on three-phase alternating current output by a mud generator through a digital processor, generating a PWM driving signal based on phase information, controlling the conduction and shutdown of a power switch tube connected with a generator winding, adjusting the current of a generator stator winding, and completing the control of the output torque of the generator. The application performs phase identification on three-phase alternating current through a digital processor and generates a PWM driving signal, realizes accurate control of the output torque of the generator, directly adjusts the current of the stator winding, and avoids the heat dissipation and space problems caused by the traditional resistance dissipation mode.
Owner:四川天石和创科技有限公司

Island microgrid secondary control method and system based on voltage reactive hybrid error

The invention discloses a secondary control method and system of an island micro-grid based on voltage reactive hybrid errors, and belongs to the field of secondary control of an alternating current micro-grid, and the method comprises the steps: for each bus and each inverter connected with the bus, obtaining a state quantized value uploaded by each inverter in real time from a communication network, and obtaining a bus voltage; and for the ith inverter, respectively calculating a voltage reactive hybrid error # imgabs0 # and a frequency active hybrid error # imgabs1 #, calculating a voltage control signal # imgabs3 # and a frequency control signal # imgabs4 # according to # imgabs2 #, calculating a reference voltage # imgabs6 # and a reference frequency # imgabs7 # according to # imgabs5 #, and then carrying out double-closed-loop PI control to obtain a PWM (Pulse Width Modulation) signal, and acting the PWM signal on the ith inverter to realize secondary control. According to the invention, the offset of the bus voltage and the frequency can be compensated while the power among the distributed power supplies is proportionally distributed, so that the normal operation of the load is ensured.
Owner:HUAZHONG UNIV OF SCI & TECH

High-power IGBT flexible power supply control system

The present invention relates to a high-power IGBT flexible power supply control system, and belongs to the field of electronic devices. The present invention carries out targeted system design for the problems of large-scale high-power IGBT flexible power supply devices, sudden load changes, and complex industrial field environments, so that the equipment can be applied to various industrial production scenarios. In order to solve the problem of large-scale high-power power electronic devices, the present invention formulates a clock synchronization strategy and carries out modular design of the device, so that the system can easily expand the power scale and the control effect can be guaranteed. All controllers form a ring communication redundancy, which greatly improves the safety of the system. For the problems of sudden load changes and complex industrial environments, a system fault self-healing function is added to improve the automation level of the equipment, and a Sigma-Delta sampling module is used to ensure the accuracy and rapidity of current sampling, thereby improving the performance of the equipment.
Owner:CISDI ELECTRIC TECHNOLOGY CO LTD

A classification grading reinforcement method for tunnel portal

The application relates to the technical field of tunnel construction, in particular to a classification and grading reinforcement method for a tunnel portal, which comprises the following steps: step S1, acquiring field investigation data, and establishing a tunnel portal section topography and geology parameter model according to the field investigation data; step S2, grading tunnel portal deformation characteristics; step S3, grading tunnel portal deformation control levels; step S4, selecting a tunnel portal deformation treatment scheme according to the grading; step S5, combining different construction methods to formulate multiple alternative treatment schemes; and step S6, determining an optimal scheme based on multi-target optimization. The application has the advantages of strong applicability, high fine degree, high reliability, quantitative analysis and an engineering guiding significance of a comprehensive evaluation system.
Owner:JIANGXI PROVINCIAL TRANSPORTATION ENG GRP

Composition for preventing and treating cotton leafhopper, insecticide, application and preparation method of insecticide

The invention relates to the technical field of cotton leafhopper prevention and treatment, in particular to a composition for preventing and treating cotton leafhopper, an insecticide, application and a preparation method of the insecticide. The composition is prepared from the following components in parts by mass: 67.5 to 94.5 parts of dinotefuran, 900 parts of monopotassium phosphate, 900 parts of orange peel essential oil and 7.5 parts of eucalyptol, and is prepared from the following components in parts by mass: 67.5 to 94.5 parts of dinotefuran, 900 parts of monopotassium phosphate, 900 parts of orange peel essential oil and 7.5 parts of eucalyptol. When the insecticide is applied to cotton leafhopper prevention and treatment, compared with a single dose of dinotefuran, the insecticide not only can achieve a better prevention and treatment effect, but also can reduce the dosage of dinotefuran so as to achieve the purpose of effectively delaying the generation of drug resistance of cotton leafhoppers.
Owner:INST OF PLANT PROTECTION JIANGXI ACAD OF AGRI SCI

Vegetable disease and insect pest biological control method and system for preventing insect pests through microorganisms

The invention discloses a vegetable pest biological control method and system for microbial pest control, relates to the field of pest control, solves the problem of poor pertinence of a vegetable pest biological control method, and comprises the following steps: S1, respectively obtaining a periodic pest type distribution coefficient, a periodic peak pest quantity ratio and a periodic pest type quantity value; s2, dividing the pest control region into a first type of pest control region to a second type of pest control region by analyzing the pest preliminary collection data, obtaining regional pest preliminary classification data, and performing environment analysis on the second type of pest control region to obtain regional screening data; and S3, according to the insect pest area analysis data, carrying out insect pest control method matching on the insect pest control area, so that the pertinence of the microbial insect pest control method can be improved.
Owner:GUANGDONG RUNFENGDING AGRICULTURAL TECHNOLOGY CO LTD

A supercharged chemical reaction kettle

ActiveCN117046389BEasy to control the rate of pressure changeHigh control precisionChemical industryThermodynamics
The present application relates to the technical field of chemical industry, in particular to a kind of pressurized chemical reaction kettle, including kettle body, pressurizing control machine part being arranged in the side of kettle body, and the control end being installed in kettle body and being connected with pressurizing control machine part;The pressurizing control machine part includes equipment machine frame, gas supply cylinder being arranged on equipment machine frame, gas supply pipeline being arranged on gas supply cylinder, the gas supply pipeline branch is main pressurizing pipeline and adjusting pipeline, the main pressurizing pipeline and adjusting pipeline are respectively connected with control end;The main pressurizing pipeline is provided with pressurizing cylinder, and the speed regulating machine part for adjusting pressurizing cylinder, the adjusting pipeline is provided with fine adjustment machine cylinder, and the fine adjustment assembly for controlling the adjusting amount of fine adjustment machine cylinder is arranged.The present application is convenient to control the rate of pressure change in reaction kettle, guarantees the control effect of pressurizing, improves the control precision of increasing adjustment.
Owner:ANHUI XINGXIN MATERIAL TECH CO LTD

Liquid pesticide discharge mechanism

The liquid pesticide discharge mechanism belongs to agricultural machinery; the mechanism comprises a power driving and quantitative adjusting system composed of a motor, a motor shaft, a crank, an adjusting block and a driving rod, a quantitative liquid feeding and discharging system composed of a liquid storage cylinder, a liquid feeding check valve and a piston rod, and a liquid pesticide discharge opening and closing system composed of a transmission box, a driving plate, a rack, a gear shaft, an arc-shaped belt slot connecting rod, a connecting rod, a push-pull plate, a push-pull rod, a cross slot plate, a hanging seat, a liquid discharging cylinder, a rotating shaft, a sleeve, a semi-circular opening and closing left and right leaf plate; the mechanism has a unique, reasonable and compact structure, high precision in discharge amount control, simple and convenient operation, wide application range, strong adaptability and good versatility.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

Automatic control method for boring and milling drilling machine

The invention discloses an automatic control method for a boring, milling and drilling machine, relates to the technical field of boring, milling and drilling machines, and solves the problem that the control precision of heat generated in the machining process of the boring, milling and drilling machines is greatly different. The method comprises the following steps of: determining the heat reduction condition associated with the corresponding parameter, gradually adjusting until the corresponding heat does not rise, judging again, and synchronously performing real-time regulation and control based on a subsequent actual judgment process, so that the corresponding heat can be effectively and accurately controlled, the corresponding heat is in a controllable range, and the control efficiency is improved. Therefore, a better machining effect is achieved, and the situation that the machining precision has errors due to the fact that heat cannot be controlled is effectively avoided.
Owner:XIANGTAN HUAGUANG MASCH MFG CO LTD

Ear-type intelligent back material detecting real-time control mechanism

This utility model relates to the technical field of return material devices, specifically an ear-type intelligent detection and real-time control mechanism for return materials. It includes a return material pipe with a detection component connected to it. One end of the return material pipe is inclined downwards and has a return material outlet, with the return material conveyor positioned below the outlet. This ear-type intelligent detection and real-time control mechanism, through the detection component, can control the start and stop of the return material conveyor. When no material is being returned, the conveyor remains stopped, preventing idling and saving energy. It also prevents unprocessed returned material from clogging the return material outlet.
Owner:TONGLING TONGGUAN JIANAN NEW ENVIRONMENTAL PROTECTION BUILDING MATERIALS TECH CO LTD

Grain pile surface layer protective agent applying device

The utility model relates to a grain pile surface layer protective agent applying device which comprises a device support, walking wheels used for walking on a grain pile surface layer are rotationally assembled on the device support, a pesticide distributing device and a stirring device which are arranged front and back are arranged on the device support, and the pesticide distributing device comprises a pesticide box and a pesticide distributing exploring tube with the lower end used for penetrating into the grain pile surface layer. The upper ends of the medicine distribution exploring tubes are connected with the medicine box, the medicine distribution exploring tubes are arranged at intervals in the left-right direction, medicine outlets are formed in the medicine distribution exploring tubes, the stirring device comprises at least one stirring unit, and the stirring unit comprises a stirring shaft which is vertically arranged and driven by the power source. A plurality of stirring blades which are vertically arranged and used for being inserted into the surface layer of a grain pile from top to bottom are fixed on the stirring shaft and are radially distributed by taking the stirring shaft as the center. The technical problems that in the prior art, the labor intensity is high and the pesticide applying depth is limited due to the fact that a protective agent is manually sprayed to the surface of a grain pile are solved.
Owner:HENAN UNIVERSITY OF TECHNOLOGY

Remote plasma source reaction chamber temperature control circuit and control method

The present invention belongs to the field of semiconductor manufacturing technology, and provides a remote plasma source reaction chamber temperature control circuit and control method. The circuit includes a sampling unit, a control unit, a PWM drive unit, a full-bridge inverter circuit and a resonant converter. The sampling unit is used to collect the output current, voltage and chamber temperature of the resonant converter; the control unit fits the chamber temperature at time k+2 and determines the optimal sequence executed by the PWM drive unit; the PWM drive unit outputs a pulse signal according to the optimal sequence; the full-bridge inverter circuit includes a switch tube S1-S4, and the switch tube is closed or disconnected according to the output signal of the PWM drive unit; the resonant converter is connected to the full-bridge inverter circuit, and an AC signal is output to act on the reaction chamber. The present invention can fit the reaction chamber temperature at time k+2 and compare it with a preset threshold, and then the control unit can further determine the adjustment value of the closed-loop control, ensure the control effect of the chamber temperature, and improve the stability of gas dissociation in the remote plasma source.
Owner:JIANGSU SHENZHOU SEMICON TECH CO LTD

Vehicle motor anti-shake control method and system, vehicle and electronic device

The present application relates to the technical field of motor anti-shake, and particularly relates to a vehicle motor anti-shake control method and system, a vehicle and electronic equipment, comprising: acquiring motor speed and demand torque in real time, and calculating time sequence indexes and frequency domain indexes of the motor speed; combining the collected motor speed, demand torque, time sequence indexes and frequency domain indexes into a state vector; inputting the state vector into a pre-trained neural network model, and outputting a compensation torque; superimposing the compensation torque and the demand torque to generate a total torque and transmit the total torque to a motor controller to perform torque control; wherein the training process of the neural network model comprises building an offline simulation environment, offline training a reinforcement learning model and online fine-tuning the model. The present application can realize motor anti-shake function, reduce calibration difficulty and cost, reduce loss, can be online fine-tuned and adapted to a real vehicle, and ensure control effect.
Owner:DEEPAL AUTOMOBILE NANJING RESEARCH INSTITUTE CO LTD

Method and device for improving safety management system of iron and steel enterprise

The invention relates to the technical field of steel safety management, and provides a method and a device for improving a safety management system of a steel enterprise. The method comprises the following steps: organizing an expert to determine at least one current problem point on site in advance according to a safety standard, and collecting a multi-view picture set of each current problem point; generating an initial report table according to the optimal view angle picture in the multi-view angle picture set; and obtaining to-be-rectified information of each current problem point filled in the initial report table by an expert according to the safety standard to obtain a target report table. On the basis of on-site investigation of the expert, the expert is assisted to complete the target report table by collecting the multi-view picture set and generating the initial report table according to the optimal view picture, and the problems that in the prior art, report table filling efficiency is low, the generated report table is inconvenient to read, and the report table cannot be read easily are solved. And the accident prevention and control effect level is influenced.
Owner:SINOSTEEL WUHAN SAFEY&ENVIRONMENT PROTECTION RES

A data driven control method and system for a club system

The present invention provides a data-driven control method and system for a ball-bar system, comprising: applying continuous excitation to the system multiple times, collecting corresponding response information, obtaining input and output data, and then obtaining an equivalent representation of the system state feedback; using an equivalent state space expression, based on Lyapunov stability theory, giving the design constraint conditions for the ball-bar system state feedback control to meet the asymptotic stability requirements; solving the design constraint conditions for the state feedback control system to meet the asymptotic stability requirements, and then solving the system's stable state feedback gain using the relevant parameters that meet the constraint conditions. The present invention solves the technical problems of the existing ball-bar system controller design technology, such as complex controller design, complex parameter adjustment, and poor control accuracy.
Owner:EAST CHINA UNIV OF SCI & TECH

A design method and system for a fault-tolerant controller for a quadrotor drone

The embodiment of the present application provides a method and system for designing a fault-tolerant controller for a quad-rotor drone. The method includes building a target motion model for reflecting the flight status of the drone in combination with the fault distribution and the rotor speed of the drone, taking into account the impact of the fault on the rotor; setting a relative threshold and a fixed threshold that change synchronously with the control input of the model; adjusting the control input of the model through the relative threshold and the fixed threshold in combination with the event triggering characteristics, so that the flight trajectory of the drone approaches the preset target flight trajectory; in the adjustment process, the backstepping method is used to recursively design the corresponding virtual control law and the actual control law, so that the model approaches asymptotic stability. The implementation of this method can ensure accurate tracking control of the quad-rotor drone when multiple faults occur simultaneously.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

A method and system for adaptive flow regulation control of a pneumatic actuator

ActiveCN121704163BRealize adaptive optimization of leakage statusDynamically sense the degree of internal leakageOperating means/releasing devices for valvesFlow control using electric meansControl engineeringPerformance index
The application relates to the field of fluid pressure control, in particular to a pneumatic actuator flow self-adaptive regulation control method and system. The method comprises the following steps: constructing a health sample; fitting a relationship curve between total air inlet flow of the health sample and corresponding displacement setting value, self-adaptively dividing a plurality of displacement setting value intervals, and assigning a clustering label to each interval; clustering and obtaining a plurality of clustering clusters and corresponding cluster centers; matching a clustering label interval of a real-time running sample according to a displacement setting value of the real-time running sample, and calculating a flow leakage index; dynamically calculating a self-adaptive convergence threshold value according to the flow leakage index, and constructing a performance index model fusing action execution time length and displacement deviation to generate a corresponding performance index; and performing control parameter iterative optimization taking the performance index as an evaluation standard. The application has the effect of self-adaptively regulating flow control parameters according to the actual flow leakage degree of the pneumatic actuator.
Owner:NINGBO JIANGBEI NEW XIN PETROCHENICAL MACHINERY EQUIP CO LTD