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33results about How to "Capable of self-adaptive adjustment" patented technology
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Method, device and electronic equipment for voice activity detection
ActiveCN102044242ACapable of self-adaptive adjustmentImprove the performance of voice activation detectionSpeech analysisTime domainOperation mode
The embodiment of the invention discloses a method, device and electronic equipment for voice activity detection. The method comprises the following steps: acquiring time domain sorting parameters and frequency domain sorting parameters from audio frames; acquiring first distances between the time domain sorting parameters and the long-time sliding average value of the time domain sorting parameters in historical background noise frames; acquiring second distances between the frequency domain sorting parameters and the long-time sliding average value of the frequency domain sorting parameters in historical background noise frames; and determining whether the audio frames are foreground voice frames or background noise frames according to the first distances, the second distances and a determining polynomial group based on the first and second distances, wherein at least one coefficient in the determining polynomial group is a variable which can be changed with the operation mode of voice activity detection or the characteristics of input signals. The technical scheme can endue the determining criterion with self-adaptive regulation capability, thereby improving the performance of voice activity detection.
Owner:HUAWEI TECH CO LTD
Method and system for allocating network resources
ActiveCN101656662ACapable of self-adaptive adjustmentIncrease profitData switching networksGeolocationSpeed limit
The invention relates to a method for allocating network resources. The method comprises the following steps: establishing a plurality of resource management channels in a central site according to the property of the network traffic, partitioning each branch site attached to the central site into a plurality of zones corresponding to a plurality of resource management channels, and performing bandwidth reservation and maximum bandwidth speed limit on the network traffic of the branch site in a zone corresponding to each resource management channel. The invention also relates to a system for allocating the network resources. The system manages the network traffics of operations in different types, levels and geographical positions via the resource management channels, and carries out bandwidth reservation and maximum bandwidth speed limit on the resource management channel based on DiffServ QoS technology, so that the network has a certain self-adaption adjusting capacity. Under the situation that congestion is caused by network traffic burst, the system avoids TCP synchronism caused by the wide difference between the bandwidths of the central site and the branch organization, increases the utilization rate of bandwidth access and maintains the normal running of network application.
Owner:CHINA TELECOM CORP LTD
Hybrid active power filter and its control method
ActiveCN1972060ASimple structureLow implementation costActive power filteringHarmonic reduction arrangementElectricityPower grid
This invention discloses one mixture power filter and its control method, wherein, it comprises the following structure: forming filter branch by source filter and filter without source and the branch and the needed non-linear load are connected; it also comprises electricity network current test device and compensation tester with one end of test connected with input circuit and other end with source filter and the tester two one end is connected to filter branch and other end with source filter.
Owner:山东华天科技集团股份有限公司
Thermo-acoustic three-phase alternating current generating system driven by double-temperature-position heat source
InactiveCN104079142ARealize comprehensive utilizationIncrease profitMachines/enginesDynamo-electric machinesGas phaseDevice form
The invention discloses a thermo-acoustic three-phase alternating current generating system driven by a double-temperature-position heat source. The thermo-acoustic three-phase alternating current generating system comprises a magnetic fluid electric generating device and a thermo-acoustic converting device forming a loop. The loop is filled with a phase-changeable work medium, the liquid phase of the phase-changeable work medium serves as the work medium of the magnetic fluid electric generating device, and the gas phase of the phase-changeable work medium serves as the medium of the thermo-acoustic converting device. The magnetic fluid electric generating device and the matched thermo-acoustic converting device serve as a loop unit, the thermo-acoustic three-phase alternating current generating system at least comprises two loop units, and the loop units are communicated with each other to share the phase-changeable work medium. A certain amount of acoustic power is produced through a gas-liquid phase change thermo-acoustic converting mechanism, and a traveling wave thermo-acoustic engine serves as an amplification stage to amplify the produced acoustic power. A medium temperature heat exchanger and a high temperature heat exchanger are different in heating temperature, the double-temperature-position heat source can be used for driving the system to work, and the utilization rate of a medium and low temperature position and low grade heat source can be increased. Gas-liquid phase change exists in the system, and therefore the self-adaptation adjusting capacity is achieved.
Owner:ZHEJIANG UNIV
Low energy consumption general multi-mode smart adsorption drying method for preparing compressed air
ActiveCN110237646AReduced operating lifeAdjust adsorptionGas treatmentDispersed particle separationSorbentOptimal control
The invention relates to a preparation technology of compressed air and aims to provide a low energy consumption general multi-mode smart adsorption drying method for preparing compressed air. An adsorption drying system is targeted at parallel operation of a double adsorption barrel and a multi-adsorption barrel; air flow organization of hot air flows are performed from an upper part of a regeneration adsorption barrel downwards to realize regeneration of an adsorption agent; the method includes a heating and regenerating stage for waste heat of compressed air, a voltage discharging stage, fanning, deepening and heating stage and a circulating and cooling stage. The method disclosed by the invention has the advantages of (1) low energy consumption, fully utilizing compressed waste heat and environmental cooling capability; (2) multi-module design, realizing multi-layered dew point control; (3) multi-module regeneration, ensuring long-time work of a drying agent; (4) self-adjusting capability; and (5) digitalized efficient analysis. According to the method provided by the invention, optimal control of the drying agent monitored in real time based on the wet height of adsorption barrels is utilized, long-time and smooth operation of the whole adsorption technology is ensured, long-time and stable work of the drying agent is ensured, and the replacement cost is greatly reduced.
Owner:HANGZHOU ZETA TECH +1
High dynamic range adaptive adjustment method for infrared thermal imager
ActiveCN108120507AImprove imagingAvoid Imaging AbnormalitiesRadiation pyrometryCalibration algorithmTime switching
The invention discloses a high dynamic range adaptive adjustment method for an infrared thermal imager. The method comprises a first step of parameter acquisition in which a high accuracy area sourceblackbody is used as a standard reference source, a refrigeration-type staring infrared thermal imager is used for normal imaging and a digital video is outputted, the temperature of the high accuracyarea source blackbody is adjustable, and the integration time of the refrigeration-type staring infrared thermal imager can be switched among multiple stages of set values, a second step of data processing in which the relationship between a response and external radiation under different integration time of the refrigeration-type staring infrared thermal imager is firstly built, and then, an integration time switching logic and a threshold are designed, a third step of multi-section two-point calibration in which the area source blackbody is used to offline use a general two-point calibration algorithm to calculate and obtain a correction gain value and an offset value under different integration time stages, and a fourth step of real-time optimization in which the integration time switching logic and the threshold algorithm in the second step form a program in a programmable FPGA hardware development mode and are solidified into an imaging circuit.
Owner:BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
Gas proportional valve
PendingCN110145623APrecise flow controlCapable of self-adaptive adjustmentOperating means/releasing devices for valvesDomestic stoves or rangesProduct gasSelf adaptive
The invention discloses a gas proportional valve. The gas proportional valve comprises a main valve body, a first regulating valve and a second regulating valve. A gas inlet, a gas outlet and a gas storage chamber communicating with the gas inlet are formed in the main valve body. The first regulating valve is installed in the gas storage chamber. The first regulating valve comprises a first valvebody and an opening degree regulating assembly. An inner chamber of the first valve body is divided into a first chamber and a second chamber by the opening degree regulating assembly. The first chamber communicates with the gas outlet and communicates with the gas storage chamber through a first gas port formed in the first valve body. The opening degree of the first gas port is regulated by theopening degree regulating assembly according to the quantity of gas entering the second chamber. The second regulating valve can switch between the gas supply state, the gas exhaust state and the keeping state by changing the input electric current. According to the gas proportional valve, because the first regulating valve and the second regulating valve are used in combination, the state of thesecond regulating valve is unceasingly regulated according to contrast between the pressure of the gas outlet and the required pressure so as to enable the pressure of the gas outlet to reach the required pressure, and the gas proportional valve can achieve self-adaptive regulation during installation.
Owner:GUANGDONG WANHE THERMAL ENERGY TECH CO LTD
Online data flow QoS identification method and system based on service type
InactiveCN111431820AHigh precisionImprove reliabilityData switching networksQuality of serviceData pack
The invention provides an online data flow QoS (Quality of Service) identification method based on a service type, which comprises the following steps: S1, classifying by using a part of historical flow with historical labels, carrying out offline model training, establishing an initial classification model, and installing the model in a controller in an SDN (Software Defined Network) to serve asan initial classifier; and S2, when the data flow reaches the switch, matching the data packet of the data flow with a forwarding flow table in the switch, if matching succeeds, performing operation according to an instruction designed in the forwarding flow table, and otherwise, packaging the data packet of the data flow and uploading the packaged data packet to a controller. The method providedby the invention can obtain very high accuracy, has self-adaptive adjustment capability, and can be used for space-ground networks at different time and different geographic positions.
Owner:SHANGHAI JIAO TONG UNIV
Integrated assembling free flexible coupling
The integrated assembling-free flexible coupling is one cylindrical body including two connecting ends and flexible mechanism in the middle part, and the connecting end has one connecting hole and one slot to divide the connecting hole into two parts. There are one screw hole in the direction perpendicular to the slot and one screw fitting the screw hole. The flexible mechanism is formed with parallel circular sheets connected together. The integrated assembling-free flexible coupling has compact structure, no friction, no need of lubricating, long service life, less influence of environment temperature, easy-to-obtain machining precision, low cost, smooth motion transfer, self regulation of axial error, shock buffering and convenient assembling and disassembling, and is especially suitable for the field with moisture, great impact, frequent starting and frequent rotation direction change.
Owner:SOUTH CHINA UNIV OF TECH
Rapid crack repairing device for road engineering construction
ActiveCN111996894APromote repairStable flowRoads maintainenceRoad engineeringArchitectural engineering
The invention provides a rapid crack repairing device for road engineering construction and relates to the technical field of road engineering to solve the problems that when an existing crack repairing device is use, a repairing agent is usually directly poured into a material, the repairing agent is difficult to reach due to the fact that a narrow space exists in a crack, the crack still has hidden danger, and a crack expanding mode generally adopts a linear damage finishing mode such that the crack is expanded, and a crack damage surface is enlarged. The device comprises a repairing vehiclemain body; and a vertical lifting mechanism is transversely mounted in the middle of the upper end of the inner cavity of the repairing vehicle main body in a sliding manner. An inverted servo motoris fixedly mounted in the middle of the rotating base at the upper end of a cleaning mechanism, a repairing mechanism is slidingly clamped in a guide rail groove, when the servo motor rotates, the crack can be subjected to crevasse correction through a crushing knife, and broken stone cleaning can be conducted through a cleaning head such that the subsequent repairing mechanism conducts repairingconveniently, and the whole process is coherent.
Owner:温州市交通规划设计研究院有限公司
Temperature characteristic compensation method and circuit of control system
ActiveCN101477331ARealize automatic adjustmentCapable of self-adaptive adjustmentControllers with particular characteristicsCooling/ventilation/heating modificationsElectrical resistance and conductanceAuto regulation
The invention discloses a temperature characteristic compensating method and a temperature characteristic compensating circuit for a control system, wherein a thermistor is arranged in a corresponding position of a control circuit, and automatic adjustment of the control system along with ambient temperature variation is realized by utilization of the characteristic that the resistance of the thermistor is changed along with temperature variation, namely the control system can be subjected to parameter adjustment and can be also subjected to simple structural switching. The temperature characteristic compensating method and the temperature characteristic compensating circuit for the control system can make the control system have certain self-adaptive adjusting ability on temperature variation of an application environment, and improve the system performance.
Owner:SHENZHEN VMAX NEW ENERGY CO LTD
Method and system for allocating network resources
ActiveCN101656662BCapable of self-adaptive adjustmentIncrease profitData switching networksGeolocationSpeed limit
The invention relates to a method for allocating network resources. The method comprises the following steps: establishing a plurality of resource management channels in a central site according to the property of the network traffic, partitioning each branch site attached to the central site into a plurality of zones corresponding to a plurality of resource management channels, and performing bandwidth reservation and maximum bandwidth speed limit on the network traffic of the branch site in a zone corresponding to each resource management channel. The invention also relates to a system for allocating the network resources. The system manages the network traffics of operations in different types, levels and geographical positions via the resource management channels, and carries out bandwidth reservation and maximum bandwidth speed limit on the resource management channel based on DiffServ QoS technology, so that the network has a certain self-adaption adjusting capacity. Under the situation that congestion is caused by network traffic burst, the system avoids TCP synchronism caused by the wide difference between the bandwidths of the central site and the branch organization, increases the utilization rate of bandwidth access and maintains the normal running of network application.
Owner:CHINA TELECOM CORP LTD
Self-adaptive framework control system and method for improving control moment gyroscope bandwidth
ActiveCN110018634ACapable of adaptive controlRealize adaptive adjustmentControllers with particular characteristicsLow speedControl system
The invention discloses a self-adaptive framework control system and method for improving control moment gyroscope bandwidth. The system comprises a self-adaptive double-loop PI controller, a speed observer and a bearing aging degree judgment module; the self-adaptive double-loop PI controller is used for controlling a low-speed framework motor of a control moment gyroscope and is established on the basis of a traditional current-loop and speed-loop double-loop PI controller, wherein gain parameters in the current-loop and speed-loop PI controller all have a self-adaptive adjustment function;the speed observer is used for observing the difference between relative actual speed and relative instruction speed of the low-speed framework motor of the control moment gyroscope and converting thedifference into a criterion of self-adaptive control; and the bearing aging degree judgment module is used for judging the change of frictional resisting moment after long-time running of a bearing and under the initial condition of the bearing, and the gain parameters of the self-adaptive double-loop PI controller are self-adaptively adjusted according to the change of the frictional resisting moment.
Owner:BEIJING INST OF CONTROL ENG
A rapid repair device for cracks in road engineering construction
ActiveCN111996894BPromote repairStable flowRoads maintainenceRoad engineeringArchitectural engineering
The invention provides a fast repairing device for cracks in road engineering construction, which relates to the technical field of road engineering, to solve the problem that when the existing crack repairing devices are in use, the repairing agent is directly poured into the material, and there is a narrow space in the cracks, which causes problems. The repair agent is difficult to reach, so that there are still hidden dangers in the crack, and the way to expand the crack is usually a linear damage repair method, which makes the crack expand and increases the problem of the damaged surface of the crack, including repairing the main body of the car; the owner of the repair car The middle part of the upper end of the body cavity is horizontally slidably equipped with a vertical lifting mechanism. In the present invention, since the middle part of the rotating base at the upper end of the cleaning mechanism is fixedly installed with an inverted servo motor, the repairing mechanism is then slid and clamped in the groove of the guide rail. When the servo motor rotates, the crack can be corrected by the crushing knife, and The gravel can be cleaned through the cleaning head, so that the subsequent repair mechanism can repair it, so that the whole process is consistent.
Owner:温州市交通规划设计研究院有限公司
Electric automated quick ridge making and compressing device
InactiveCN111713189AHeight adjustableAdjust the degree of compactionSpadesAgricultural machinesVehicle frameAgricultural engineering
The invention provides an electric automated quick ridge making and compressing device, and relates to the technical field of agricultural machinery. The invention aims to solve the problems that mostridge making machines in the current market directly adopt a manner that soil is extruded by ridge making rollers to form a ridge surface, the soil compaction degree of the ridge is not uniform due to the amount of the soil for ridge making, and seriously, ridge surface collapse may generate; and in addition, the height of a conventional ridge making machine can only be adjusted in a small range,and a ridge making mechanism can generate deformation in the ridge making process because the adjusting height is too high. The electric automated quick ridge making and compressing device comprisesa vehicle frame body, wherein two wheels are rotatably mounted at the bottom of the front end and the bottom of the rear end of the vehicle frame body through roll shafts. According to the electric automated quick ridge making and compressing device disclosed by the invention, a rectangular lifting hole which penetrates up and down is vertically formed in the middle part of the vehicle frame body;and the lower end of a connecting horizontal block is fixedly connected with the upper end of a ridge making frame, so that the up-and-down position relationship of the ridge making frame can be controlled through an electric cylinder, and the height and the compacting degree of made ridges can be adjusted.
Owner:胡增永
Converter control system, converter control method and microgrid
PendingCN112366756ALow communication requirementsImprove robustnessElectric power transfer ac networkSingle network parallel feeding arrangementsControl systemInner loop
The invention relates to a converter control system, a control method and a microgrid. The control system comprises an AC power calculation module, an autonomous operation control module, a normalization operation subtraction module, a current inner loop control module and a DC power calculation module. The control method corresponds to the control system. According to the control system, the AC / DC lines of the AC / DC interconnected microgrid can adopt any topological structure, active power distribution can be automatically realized in all the AC / DC lines, and the converter adopts a decentralized control strategy, does not depend on real-time communication, has low communication requirements and high robustness, and when the power is disturbed or the network structure is changed, the self-adaptive adjustment capability is realized.
Owner:HOHAI UNIV
A general multi-mode smart adsorption drying method with low energy consumption for compressed air preparation
ActiveCN110237646BGuaranteed long-term workCapable of self-adaptive adjustmentGas treatmentDispersed particle separationSorbentDesiccant
The invention relates to compressed air preparation technology, and aims to provide a general multi-mode intelligent adsorption drying method with low energy consumption for compressed air preparation. The present invention is aimed at the adsorption drying system with double adsorption cylinders or multiple adsorption cylinders running in parallel. The air flow organization of the hot air flow is carried out from the upper part of the regeneration adsorption cylinder downwards to realize the regeneration of the adsorbent; it includes the regeneration stage of compressed air waste heat heating, the pressure release stage, The air blast goes deep into the heating stage and the circulation blowing cooling stage. The advantages of the present invention are: (1) low energy consumption, making full use of compression waste heat and environmental cooling capacity; (2) multi-module design, realizing multi-level dew point control); (3) multi-mode regeneration, ensuring long-term operation of the desiccant; (4) ) has adaptive adjustment capability; (5) digital energy efficiency analysis. The present invention utilizes desiccant optimization control based on real-time monitoring of the humidity of the adsorption cylinder to ensure that the overall adsorption process runs smoothly for a long time, ensures long-term stable operation of the desiccant, and greatly reduces its replacement cost.
Owner:HANGZHOU ZETA TECH +1
Movable vehicle chassis, chassis assembly and vehicle
PendingCN111332365ACapable of self-adaptive adjustmentIncrease frictionCyclesUnderstructuresSelf adaptiveThree-Wheeler Vehicles
The invention discloses a movable vehicle chassis, a chassis assembly and a vehicle. The chassis comprises two side plates used for being connected with hubs, an upper truss is hinged between the upper ends of the two side plates, lower trusses are hinged to the lower ends of the two side plates, the far ends of the lower trusses are free ends, and the two lower trusses are oppositely arranged; and a middle truss is hinged between the far ends of the two lower trusses, a supporting strip extending upwards is connected to the middle truss, and the supporting strip is hinged to the middle of theupper truss. The chassis assembly further comprises a front chassis and front wheels, the vehicle further comprises a driving system, a steering system, a braking system and a vehicle ceiling. The chassis can be adjusted in a swinging mode along with the running state of the vehicle and has self-adaptive adjusting capacity. During medium-high-speed movement, the friction force can be increased, and the turning radius is effectively reduced; the chassis is ingenious in design, can be widely applied to the fields of tricycles, trailers and the like, and has wide application prospects.
Owner:兰州山大工贸有限公司
Communicator for hydraulic-support electrohydraulic control system
ActiveCN102081379BGuaranteed redundancyGuaranteed reliabilityNumerical controlArea networkControl system
The invention discloses a communicator for a hydraulic-support electrohydraulic control system, which comprises a CAN (Controller Area Network) bus and a support controller connected to the CAN bus, wherein the support controller is used for implementing multiple serial communications, including CAN communication. The communicator disclosed by the invention has adaptability, integrates multi-function network communication modes, and provides great flexibility, practicality, diversity and reliability for the hydraulic-support electrohydraulic control system in the aspect of communication architecture.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI
A method for adaptive adjustment of high dynamic range of infrared thermal imager
ActiveCN108120507BCapable of self-adaptive adjustmentRealize adaptive adjustmentRadiation pyrometryDigital videoComputational physics
A high dynamic range self-adaptive adjustment method for an infrared thermal imager, comprising the following steps: S1: parameter acquisition; using a high-precision area source black body as a standard reference source, using a cooling staring infrared thermal imager for normal imaging and outputting digital video; The temperature of the high-precision surface source black body can be adjusted, and the integration time of the cooling staring infrared thermal imager can be switched between multiple setting values; S2: data processing; first, establish different integration times of the cooling staring infrared thermal imager, and secondly, Design integration time switching logic and threshold; S3: multi-segment two-point calibration; use surface source black body, under different integration time gears, use the general two-point calibration algorithm offline to calculate the correction gain value and offset value; S4: Real-time optimization; integrate the integration time switching logic and threshold algorithm in S2 into a programmable FPGA hardware development method to form a program and solidify it into the imaging circuit.
Owner:BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
Multi-variable limiting protection control method for aero-engine
ActiveCN112523874BCapable of multi-variable overrun controlTake full advantage of multivariable controlGas turbine plantsJet propulsion plantsRamjetControl engineering
The invention discloses a multi-variable limiting protection control method for an aero-engine. Aiming at the defects existing in the existing aero-engine limit protection control method, the present invention is based on the model-based control idea, through online linearization and parameter prediction of the airborne model, selects and activates the main control loop or the corresponding limit protection loop in real time, and The prediction results are used to realize the adaptive reconstruction of instructions under the multivariable framework, and then the multivariable controller is used to realize direct control or restriction of the unmeasurable. Its applicable objects are all kinds of power machinery that can establish complex analytical models and have multiple adjustable variables, including but not limited to turbojet engines, turbofan engines, turboshaft engines, turboprop engines, variable cycle engines, and turbine-based ram combination engine etc.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
An intelligent upper limb prosthesis with adaptive adjustment ability
ActiveCN114271999BImprove wearing convenienceNot prone to fatigueArtificial handsEngineeringUpper limb
Owner:HUNAN INSTITUTE OF ENGINEERING
A method for remote online detection of measurement errors based on reinforcement learning algorithm
ActiveCN111596255BCapable of self-adaptive adjustmentMeet the dynamic characteristicsElectrical measurementsMachine learningAlgorithmPredictive function
Owner:STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +3
Recyclable winter magnetic therapy self-heating pillowcase for old people and manufacturing method thereof
InactiveCN111035196AIncrease temperatureYin and Yang adjustment and improvement of visceraElectrotherapyBlanketOlder peopleNursing care
The invention discloses a recyclable winter magnetic therapy self-heating pillowcase for old people and a manufacturing method thereof. The pillowcase is composed of an outer sleeve layer, a first functional component, a middle interlayer, a second functional component and an inner sealing layer from outside to inside. The outer sleeve layer is made of polar fleece seamless cloth; the middle interlayer is a waterproof breathable film; the inner sealing layer is a densely-woven non-woven fabric; the first functional component is solid mixed powder formed by mixing ginseng root dry powder, chrysanthemum dry powder, bupleurum chinense dry powder, tea stem powder, gypsum dry powder and rubidium-iron-boron magnetic powder according to the mass ratio of 1: 1: 1: 1: (2-3): 0.01; and the second functional component is N-methyldiethanolamine. The pillowcase of the invention can realize head nursing, and has advantages of self-heating performance, cyclic utilization and self-adaptive deformation.
Owner:刘梦祎
Receiving and transmitting integrated multifunctional circuit
ActiveCN103269233BImproved tolerance to power capability limitationsMany integrated functionsTransmissionLow noiseChannel power
Owner:THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
An adaptive frame control system and method for improving the bandwidth of a control moment gyroscope
ActiveCN110018634BCapable of adaptive controlRealize adaptive adjustmentControllers with particular characteristicsGyroscopeControl system
An adaptive frame control system and method for improving the bandwidth of a torque gyroscope, the system includes an adaptive double-loop PI controller, a speed observer and a bearing aging degree judgment module; the adaptive double-loop PI controller is used to control the low-speed frame motor control of the torque gyroscope , the adaptive dual-loop PI controller is based on the traditional current loop and speed loop dual-loop PI controller, in which the gain parameters in the current loop and speed loop PI controllers have adaptive adjustment functions; the speed observer is used for observation control The difference between the relative actual speed of the torque gyro low-speed frame motor and the relative command speed is converted into a criterion for adaptive control; the bearing aging degree judgment module is used to judge the frictional resistance of the bearing after long-term operation The gain parameters of the adaptive double-loop PI controller will be adaptively adjusted according to the above-mentioned changes in the frictional resistance torque.
Owner:BEIJING INST OF CONTROL ENG
Method and device for anti-clutter and interference in characteristic domain of sky-wave over-the-horizon radar
ActiveCN114578311BSuppress interferenceAdaptableWave based measurement systemsICT adaptationEngineeringPulse compression
The present invention provides a method for anti-clutter and interference in the characteristic domain of sky-wave over-the-horizon radar. Multi-channel data is obtained from the receiving channel in the middle; beams are formed with different azimuth angles; pulse compression is used to accumulate the data of each beam in the time domain; the clutter interference space completes the extraction of clutter interference space for all beam data; Extract the beam data to complete the dimension determination of the clutter and interference data, and extract the required beam data; filter and detect to achieve Doppler filtering and target detection of the extracted data. The invention adopts the characteristic domain information to carry out anti-interference processing, which can suppress clutter and multi-pattern interference to the greatest extent, and has relatively strong adaptability to interference. The invention also provides a corresponding anti-clutter and interference device in the characteristic domain of the sky-wave over-the-horizon radar.
Owner:AIR FORCE EARLY WARNING ACADEMY
Hybrid active power filter and its control method
ActiveCN100459361CSimple structureLow implementation costActive power filteringHarmonic reduction arrangementElectricityPower grid
Owner:山东华天科技集团股份有限公司
Multivariable limit protection control method for aero-engine
ActiveCN112523874ACapable of multi-variable overrun controlTake full advantage of multivariable controlGas turbine plantsJet propulsion plantsRamjetControl engineering
The invention discloses a multivariable limit protection control method for an aero-engine. Aiming at the defects of an existing aero-engine limit protection control method, the method is based on a model-based control thought, a main control loop or a corresponding limit protection loop is selected and activated in real time through online linearization and parameter prediction of an airborne model, and instruction adaptive reconstruction under a multivariable framework is realized by utilizing a prediction result, so that a multivariable controller is used for realizing non-measurable directcontrol or limitation. The method is applicable to various power machines which can establish complex analytical models and have multiple adjustable variables, including but not limited to turbojet engines, turbofan engines, turboshaft engines, turboprop engines, variable-cycle engines, turbine-based ramjet combined engines and the like.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
A thermoacoustic three-phase AC power generation system driven by a dual-temperature heat source
InactiveCN104079142BRealize comprehensive utilizationIncrease profitMachines/enginesDynamo-electric machinesSound sourcesWorking fluid
The invention discloses a thermoacoustic three-phase AC power generation system driven by a dual-temperature-position heat source, which includes a magnetic fluid power generation device and a thermoacoustic conversion device forming a loop. The liquid phase of the phase-change working medium is used as the working medium of the magnetic fluid power generation device, and the gas phase of the phase-change working medium is used as the working medium of the thermoacoustic conversion device; the magnetic fluid power generation device and the matching thermoacoustic conversion device are used as a loop unit, the thermoacoustic three-phase AC power generation system has at least two loop units, and the loop units communicate with each other and share the phase-change working medium. A certain amount of sound work is generated by the gas-liquid phase change thermoacoustic conversion mechanism, and then the sound work is amplified by the traveling wave thermoacoustic engine as the amplification stage. The difference in heating temperature between the medium-temperature heat exchanger and the high-temperature heat exchanger can realize the utilization of dual-temperature heat sources, drive the system to work, and improve the utilization rate of medium-low temperature and low-grade heat sources. There is a gas-liquid phase transition in the system, which has the ability of self-adaptive regulation.
Owner:ZHEJIANG UNIV
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