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33results about How to "Adjustment science" patented technology

Energy-saving automatic control device of cloth-bag dust removal system and control method for blast furnace dust removal

The invention provides an energy-saving automatic control device of a cloth-bag dust removal system and a control method for blast furnace dust removal. The energy-saving automatic control device comprises an input unit, a variable frequency drive unit, an execution unit and a PLC (programmable logic controller) control unit, wherein the input unit is composed of a fast acting fuse, a contactor and an electric reactor; the variable frequency drive unit consists of a rectification module and a capacitor, together with a braking unit, an inverter, a CPU (central processing unit) with a vector control function and a 220V power supply; the execution unit is composed of an electric reactor, a throttle rotary actuator and a throttle control device; the PLC control unit is composed of a PLC and an auxiliary circuit; the primary side of the rectification module of the variable frequency drive unit is connected with an output end of the electric reactor of the input unit and the secondary side of the rectification module is connected with the electric reactor of the execution unit through the capacitor and the inverter; the rectification module and the inverter are connected with the CPU through a bus, the CPU and the PLC are connected in a communication manner through a switching value and an analog quantity, and a throttle control end of the PLC unit is connected with the execution unit. Meanwhile, the device is used for controlling the blast furnace dust removal. By adopting the energy-saving automatic control device and the control method provided by the invention, the fan utilization can be improved, the accuracy control on the dust removal can be realized, the electric energy can be saved, heat productivity of the device can be reduced, the dust recovery rate can be improved, the cloth-bag damage rate can be reduced, and exhaust gas and dust emissions can be decreased.
Owner:CHINA THIRD METALLURGICAL GROUP ELECTRICAL INSTALLATION ENG

Dynamic energy stability evaluating method and system for doubly-fed induction generator grid-connected system

The invention relates to a dynamic energy stability evaluating method and system for a doubly-fed induction generator grid-connected system and belongs to the technical field of wind power generationsystems. With the dynamic energy stability evaluating method and system for the doubly-fed induction generator grid-connected system of the invention adopted, the problem of the low accuracy of the stability evaluation of an existing wind turbine generator grid-connected system can be solved. The method comprises the following steps that: when secondary synchronous oscillation occurs on the doubly-fed induction generator grid-connected system, the voltage and current instantaneous values of an induction generator grid-connected point and a series compensation position are acquired; the dynamicenergy of the doubly-fed induction generator grid-connected system is obtained based on the voltage and current instantaneous values of the induction generator grid-connected point and the series compensation position; the dynamic energy of the doubly-fed induction generator grid-connected system in integer periods is collected, and non-periodic components are extracted from the dynamic energy; and if the change rate of the non-periodic components is positive, the doubly-fed induction generator grid-connected system has a negative damping characteristic, and oscillation diverges, and otherwise, the doubly-fed induction generator grid-connected system has a positive damping characteristic, and oscillation converges. With the method and system of the invention adopted, the stability of thedoubly-fed induction generator grid-connected system can be accurately and effectively evaluated.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Automatic city waterfront viewing tour line generation method

The invention discloses an automatic city waterfront viewing tour line generation method. The method comprises steps that 1, a city waterfront three-dimensional space form database is established; 2, a city waterfront handset signaling database is established; 3, city waterfront population movement behavior modes are identified on the basis of handset signaling, and various types of population movement databases are respectively established and are connected with a three-dimensional vector map; 4, a viewing point reachability analysis module is established and is connected with the population movement databases and the three-dimensional vector map; and 5, a city waterfront tour line generation module is established, and city waterfront viewing tour lines are automatically generated. According to the method, on the basis of the handset signaling data changing in real time, the city waterfront population movement behavior modes are identified, the various types of population movement databases are respectively established, reachability of viewing points in a waterfront program is analyzed, the city waterfront viewing tour lines are automatically generated, moreover, the method further facilitates researches on city waterfront population movement and has the guidance effect on waterfront landscape tour line programming and design.
Owner:SOUTHEAST UNIV

Intelligent analysis system of sludge nitrification activity, and analysis method thereof

The invention provides an intelligent analysis system of the sludge nitrification activity, and an analysis method thereof. The system comprises a control panel, a PLC controller, and a reaction device arranged in a cabinet body, the bottom of the reaction device is connected with a water discharge tube, a water discharge solenoid valve, an aeration tube, an aeration head and an aeration solenoid valve respectively, the upper portion of the reaction device is sequentially connected with a water feeding tube, a water feeding solenoid valve, a water feeding pump, a dosing tube and a dosing pump, one end of the aeration tube is connected with the aeration head, and the other end of the aeration tube is connected with the solenoid valve and the aeration pump. The analysis method adopting the system comprises the following steps: calculating the sludge nitrification activity number by continuously monitoring the ammonia nitrogen value change within a period of time, and carrying out analysis calculating by adopting data analysis software on the basis of a least squares technique and a simulated approaching technique. The system is suitable for determining the nitrification activity of active sludge in the biological pool of a municipal sewage treatment plant, and the ammonia nitrogen nitrification rate of the active sludge, and substantially improves the detection rate and the real time monitoring efficiency of the ammonia nitrogen nitrification rate.
Owner:BEIJING DRAINAGE GRP CO LTD

Sprint training machine

The invention discloses a sprint training machine which comprises a running machine frame. Small carrier rollers are arranged between running frames of the running machine frame, a running belt attached to the small carrier rollers is arranged outside the small carrier rollers, the two ends of the running belt are respectively provided with a fixing roller in belt transmission fit with the running belt, the fixing rollers are installed at the two ends of the running frames respectively, the two ends of the running frames are respectively provided with a damping adjustment mechanism, a tension sensor is installed on a support of the running machine frame, a tying strip is connected to the tension sensor, and a display device is installed at the top of the support of the running machine frame. The sprint training machine is simple in structure and convenient to operate, an actual competition can be conveniently simulated in the training process, the training efficiency of sprinters is improved, particularly, tension values generated in the running process of the sprinters can be led out through the tension sensor, and effective reference data are provided for the aim that coaches more scientifically adjust the exercise training methods and better exploit potential of the sprinters.
Owner:NANJING FORESTRY UNIV

Method for forming metal foil by utilizing equipotential line to design variable-profile mold

The invention relates to a method for forming a metal foil by utilizing an equipotential line to design a variable-profile mold. An upper pressing head, a lower pressing head, height-adjustable ball head cylinders, a blank holder and the metal foil are specifically included. The method is characterized in that firstly, an original metal foil blank and a finally-formed metal foil part serve as two electrodes, the axial position of each height-adjustable ball head cylinder in a dynamic molded surface mold in the forming process is determined according to distribution of electric field equipotential lines, then the optimal forming effect is achieved, and a metal foil part with a complex curvature structure is formed. By means of the device, the shape of the electric field equipotential lines can be fully utilized in the deformation process to determine the middle molded surface of the variable mold, and manufacturing of the metal foil part with the complex curvature structure is effectively achieved; and the problem that the middle molded surface of a dynamic molded surface mold is difficult to design in the forming process of the metal foil part with the complex curvature is solved, and therefore the forming efficiency and the forming effect of the metal foil with the complex curvature are improved.
Owner:HARBIN UNIV OF SCI & TECH

Power dispatching electric quantity automatic management system and method

The invention discloses a power dispatching electric quantity automatic management system and method, and the system comprises an SQL database server, one or more electric power dispatching clients, and a plurality of transformer substation clients; the SQL database server is connected with the one or more electric power dispatching clients and the plurality of transformer substation clients; eachtransformer substation client corresponds to one transformer substation or power station, is arranged at the corresponding transformer substation or power station and is used for inputting electric quantity data by a worker and sending the electric quantity data to the SQL database server; and the power dispatching client is used for acquiring the electric quantity data from the SQL database server and providing report generation and data query functions. According to the power dispatching electric quantity automatic management system and method, the SQL database server and the power dispatching client complete data processing, classification and presentation work, manual summarization is replaced, the working efficiency of electric power dispatching is improved, the data accounting errorrate is reduced, and the electric power dispatching management level is improved.
Owner:SHANDONG IRON & STEEL CO LTD

Intelligent frequency conversion hot pot

The invention relates to an intelligent frequency conversion hot pot. The intelligent frequency conversion hot pot comprises a supporting base, a heating plate and a pot body, and an adjusting panel which is electrically connected with the heating plate is installed on the supporting base; a pressure sensor is arranged between the supporting base and the heating plate and electrically connected with a control chip, and the control chip is electrically connected with the adjusting panel; a detachable isolation net is installed in the pot body, the middle of the isolation net protrudes upwards,a slope is formed around the middle of the isolation net, temperature difference sensing sheets are fixedly attached to the slope, and signal collecting units of the temperature difference sensing sheets are connected with a signal projector in pair; the signal projector is electrically connected with the control chip. The intelligent frequency conversion hot pot is exquisite in structure, the magnitude of heat power can be intelligently adjusted according to food taking speed of a hotpot customer, the heat power can be timely adjusted when new food is added into the pot, after the food is cooked, the heat power is automatically reduced, the mouthfeel of the food is guaranteed, the amount of generated vapor is reduced, and a comfortable eating environment is provided with the hotspot customer.
Owner:YONGKANG ANDONG ELECTRIC APPLIANCE CO LTD

Method and system for evaluating dynamic energy stability of double-fed fan grid-connected system

The invention relates to a method and system for evaluating the dynamic energy stability of a double-fed fan grid-connected system, which belongs to the technical field of wind power generation systems and solves the problem of low stability assessment accuracy of the existing wind turbine grid-connected system. The method comprises the following steps: when subsynchronous oscillation occurs in the doubly-fed wind turbine grid-connected system, collecting instantaneous values ​​of voltage and current at the grid-connected point of the wind turbine and the series compensation place; based on the instantaneous voltage and current values ​​at the grid-connected point of the wind turbine and the series compensation place, obtaining The dynamic energy of the double-fed fan grid-connected system; collect the dynamic energy of the double-fed fan grid-connected system with an integer period, and extract the aperiodic component from it; if the change rate of the aperiodic component is positive, the double-fed fan The grid-connected system has negative damping characteristics, and the oscillation diverges; on the contrary, the double-fed fan grid-connected system has positive damping characteristics, and the oscillation converges. The method in the invention can accurately and effectively evaluate the stability of the double-fed fan grid-connected system.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Method for whole monitoring of radix bupleuri oral liquid quality

The invention relates to a method for whole monitoring of radix bupleuri oral liquid quality. The method comprises the steps of firstly, constructing a fingerprint spectrum of a radix bupleuri medicinal material, intermediate extract and a finished radix bupleuri oral liquid product; secondly, detecting the fingerprint spectrum of the radix bupleuri medicinal material, the intermediate extract and the finished radix bupleuri oral liquid product; and thirdly, comparing the fingerprint spectrum of the radix bupleuri medicinal material, the intermediate extract and the finished radix bupleuri oral liquid product to a standard fingerprint spectrum; producing by taking the radix bupleuri medicinal material with integral similarity consistent with requirement as a raw material, turning to a next process when integral similarity of the fingerprint spectrum of the intermediate extract and the standard fingerprint spectrum is consistent with requirement, and delivering the finished radix bupleuri oral liquid product where integral similarity of the fingerprint spectrum therein and the standard fingerprint spectrum is consistent with requirement out of factory. The method can monitor quality from the medicinal material to the intermediate extract and to the finished product, so that the production process is easier to control, and more scientific and reasonable to regulate; and quality of the finished product is stable and consistent.
Owner:LUOYANG SHUNSHI PHARMA

Neural network asynchronous training-oriented learning rate adjustment method

PendingCN112861991ALearning rate balanceImprove network convergence speedCharacter and pattern recognitionNeural architecturesMachine learningEngineering
The invention discloses a learning rate adjustment method for asynchronous training of a neural network. The method comprises the following steps: initializing parameters; sending parameters of the neural network to all idle computing nodes until c calculation results are received; respectively adjusting the learning rates of the c received calculation gradients; s4, using the learning rate obtained in the step S4 and the received c gradients to perform one-step gradient descent update on the network; and judging whether the network precision meets the requirement. If the requirements are met, completing training, sending the response 2 to all the computing nodes, and carrying out exiting; and otherwise, returning to the step B, and sending the response 1 to all nodes which are calculated in the current round, and carrying out the training of the next round of circulation. The method has the beneficial effects that the learning rate of the delay gradient does not linearly rise along with the increase of the number, meanwhile, the delay condition of other currently received gradients and the sample batch size are considered during calculation, and the overall learning rate is adjusted to be more balanced and more scientific.
Owner:SUN YAT SEN UNIV

Wedge pressurized sawtooth groove double-sided dehydration upper press belt filter press

The invention discloses a two-sided dewatering upper squeezing belt filter press for a wedge-shaped pressurizing sawtooth groove. The two-sided dewatering upper squeezing belt filter press mainly comprises a rack, a squeezing region, a drive device, a feeding and pulp spraying device, a wedge-shaped pressurizing sawtooth groove two-sided dewatering plate, a rotary dewatering device, a scraper discharging device, a correcting device, a pneumatic tensioning device, a water spraying cleaning device and a water receiving tank device. The wedge-shaped pressurizing sawtooth groove two-sided dewatering plate is divided into an upper filter net and a lower filter net, an included angle being greater than 0 degree and less than 3 degrees is formed between the upper filter net and the lower filter net, a wedge-shaped pressurizing sawtooth groove two-sided dewatering feeding hole is larger than a discharging hole, the pressurizing is achieved according to operation of the filter nets, the two-sided dewatering effect is achieved according to the sawtooth groove and a circular hole of the dewatering plate, the drive device comprises a motor and a gearbox, so that the dewatering effect is greatly improved; meanwhile, the service life of a filter strip can be effectively prolonged, and the operation energy consumption of the filter press can be reduced.
Owner:枣庄市洁宇机械制造有限公司

An analysis method of an intelligent analysis system for sludge nitrification activity

The invention provides an intelligent analysis system of the sludge nitrification activity, and an analysis method thereof. The system comprises a control panel, a PLC controller, and a reaction device arranged in a cabinet body, the bottom of the reaction device is connected with a water discharge tube, a water discharge solenoid valve, an aeration tube, an aeration head and an aeration solenoid valve respectively, the upper portion of the reaction device is sequentially connected with a water feeding tube, a water feeding solenoid valve, a water feeding pump, a dosing tube and a dosing pump, one end of the aeration tube is connected with the aeration head, and the other end of the aeration tube is connected with the solenoid valve and the aeration pump. The analysis method adopting the system comprises the following steps: calculating the sludge nitrification activity number by continuously monitoring the ammonia nitrogen value change within a period of time, and carrying out analysis calculating by adopting data analysis software on the basis of a least squares technique and a simulated approaching technique. The system is suitable for determining the nitrification activity of active sludge in the biological pool of a municipal sewage treatment plant, and the ammonia nitrogen nitrification rate of the active sludge, and substantially improves the detection rate and the real time monitoring efficiency of the ammonia nitrogen nitrification rate.
Owner:BEIJING DRAINAGE GRP CO LTD

A bait feeding system based on body length of shrimp

The invention relates to the field of shrimp cultivation technology, in particular to a bait feeding system based on body lengths of shrimps. The system is used for precisely adjusting feeding quantity according to the change of body lengths of shrimps during shrimp cultivation processes, and comprises a data storage module, a data update module, a shrimp body length obtaining module, a data analysis module and a bait feeding control module. The shrimp body length obtaining module is used for detecting body lengths of shrimps in cultivation water in real time. The data analysis module is used for comparing length body data, which is acquired in real time, of shrimps, with the length body and weight data, which are stored in the data storage module, of the same kind of shrimps, and calculating the total feeding quantity of bait. The bait feeding control module is used for controlling feeding quantity of the shrimps and executing feeding. The bait feeding system is capable of properly automatically feeding bait according to different species of shrimps, so rest bait in the cultivation water is reduced, micro-particles are reduced, numbers of filtering processing for the cultivation water are reduced, production cost is reduced and electric power and human resources are saved.
Owner:QINGDAO AGRI UNIV +1

Method for monitoring quality of salvia milliorrhiza tablets in whole process

The invention relates to a method for monitoring the quality of salvia milliorrhiza tablets in a whole process. The method comprises the following steps: step 1, establishing fingerprints of salvia milliorrhiza medicinal materials, intermediate extract and salvia milliorrhiza finished products; step 2, determining the fingerprints of salvia milliorrhiza medicinal materials, the intermediate extract and the salvia milliorrhiza finished products; and step 3, comparing the fingerprints of salvia milliorrhiza medicinal materials, the intermediate extract and the salvia milliorrhiza finished products with a standard fingerprint; taking the salvia milliorrhiza medicinal materials with the whole similarity meeting the requirements as raw materials to produce; enabling the intermediate extract with the whole similarity of the fingerprint and the standard fingerprint thereof meeting the requirement to enter the next path of the procedure; taking the salvia milliorrhiza finished products with the whole similarity of the fingerprint and the standard fingerprint thereof meeting the requirement as qualified products to be delivered. According to the method provided by the invention, the quality monitoring of the whole process of obtaining the medicinal materials, obtaining the intermediate extract and obtaining the finished products can be realized so that a production process is easy to control; the adjustment is scientific and reasonable and the quality of the finished products is stable and consistent.
Owner:LUOYANG SHUNSHI PHARMA

A new type of multifunctional graphene power generation greenhouse

The invention provides a novel multifunctional graphene power generation greenhouse. The novel multifunctional graphene power generation greenhouse includes a water storage pipeline frame and batteries, wherein an electro-dimming plane is fixed on a top surface of the water storage type pipeline frame, the top surface of the water storage pipeline frame is fixed with a graphene photovoltaic powergeneration curved surface roof corresponding to an upper portion of the electro-dimming plane, the graphene photovoltaic power generation curved surface roof includes a curved surface frame and a graphene photovoltaic power generation assembly fixed in the curved surface frame, and a photoanode and a counter electrode of the graphene photovoltaic power generation assembly respectively correspond to network nodes of the upper graphene coating and the lower graphene coating and have the laser drilling function. The novel multifunctional graphene power generation greenhouse is advantaged in thatcurved surface construction does not produce backlighting and is colorless and transparent, not only daily lighting needs can be met, but also electricity can be further generated, the material is lighter and cheaper, electricity is utilized to scientifically adjust the internal environment of the greenhouse, and the growth need of crops of warm supply in winter and heat insulation for blocking strong light in summer can be met.
Owner:CHANGZHOU UNIV

Steam supply pressure control method and system for thermal power plant heating network

The invention provides a heat network steam supply pressure control method and system for a thermal power plant. The heat network steam supply pressure control method comprises the following steps that S1, steam flow and pressure intensity at an inlet of a steam conveying pipeline are obtained; S2, steam flow and pressure intensity at a steam conveying transfer station are obtained; S3, steam flowand pressure intensity at an user outlet are obtained; S4, a steam flow mathematical model and a pressure intensity mathematical model are established; S5, according to a set steam flow value at theuser outlet and an obtained steam flow value at an inlet of the steam conveying pipeline, the steam flow mathematical model in the S4 is combined, the steam flow rate of the steam conveying transfer station is adjusted inversely, meanwhile, according to a pressure intensity value at the user outlet and a pressure intensity value at the inlet of the steam conveying pipeline, the pressure intensitymathematical model in the S4 is combined, and the pressure intensity of the steam conveying transfer station is adjusted inversely. The heat network steam supply pressure control method and system forthe thermal power plant can scientifically adjust the pressure intensity and flow information of the pipeline in order to obtain normal steam heat supply at the end user pipeline.
Owner:CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY

A bait-feeding system based on body length for largemouth bass

The invention relates to the technical field of largemouth bass cultivation, and especially relates to a bait feeding system based on body lengths of largemouth basses. The system is used to accurately adjust feeding amount of largemouth bass baits according to variations of the body lengths of the largemouth basses in a largemouth bass cultivation process. The system comprises a data storage module, a data updating module, a largemouth bass body length acquisition module, a data analysis module, and a bait feeding control module. The largemouth bass body length acquisition module is used to detect body lengths of the largemouth basses in breeding water in real time. The data analysis module is used to compare the real-time acquired body length data of the largemouth basses with body length and weight data of the largemouth basses in the same kind, the body length and weight data being stored in the data storage module, and calculating total feeding amount of baits. The bait feeding control module is used to control feeding amount of the largemouth bass bait and execute feeding. The bait feeding system based on body lengths of largemouth basses can scientifically and rationally automatically feed baits according to differences of body lengths and weight of the largemouth basses, so as to reduce residual bait amount in the breeding water, reduce amount of micro-particles, reduce the number of filtering and treatment of the breeding water, reduce production cost, and save electric power and manpower resources.
Owner:金澄福生物科技(苏州)有限公司
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