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45results about How to "Raise the level of analysis" patented technology

3D automatic modeling and scheduling rendering method for integrated pipe network

The invention discloses a 3D automatic modeling and scheduling rendering method for an integrated pipe network, and relates to the technical field of 3D model building. The method comprises the following steps: data reading; layer creating; cutting scheduling; automatic pipeline modeling; automatic pipe point modeling; and automatic pipe network building. The technical problems, such as 2D-3D integrated management based on underground pipe network data in geographic information, spatial data organizing and rendering, and automatic 3D pipe network building according to 2D data, can be solved effectively. The access efficiency to pipe network information in a 3D scene is improved. The level of unified display, management and analysis of multiple underground pipe network systems having different attributes is improved. An important basis is provided for the acquisition and construction scheme of underground pipe network spatial information in urban construction, especially in smart city building in the future. The rapid development of urban construction leads to large-scale development and utilization of urban underground space resources.
Owner:星际空间(天津)科技发展有限公司

Automatic construction method for underground pipe network

The invention discloses an automatic construction method of an underground pipe network, which relates to displaying virtual reality technology on a display screen, and comprises the following steps: basic data processing; automatic construction of pipe network data; data optimization; attribute connection. The advantages of the present invention are: on the basis of preprocessing the data, adopting the data mining method, through the seamless integration of the three-dimensional pipe network data on the syntax, semantics and model levels, the update realizes the effective integration of multi-source data and various scales The efficient creation of three-dimensional pipe network improves the scientificity and safety of urban underground pipe network planning. By automatically constructing a 3D pipe network model, it saves a lot of manpower and time, improves work efficiency, and solves the problem that the current pipe network model has a single display method and only focuses on a single element.
Owner:星际空间(天津)科技发展有限公司

Method for optimizing medium and long term trans-regional trans-provincial deals and assessing modes of medium and long term trans-regional trans-provincial deals

The invention relates to a method for optimizing medium and long term trans-regional trans-provincial deals and assessing the modes of the medium and long term trans-regional trans-provincial deals. The method for optimizing the medium and long term trans-regional trans-provincial deals and assessing the modes of the medium and long term trans-regional trans-provincial deals is characterized by comprising the steps of (1) building a network model, (2) setting an optimization scene according to the different modes, (3) setting optimization parameters, (4) building an optimization model, (5) carrying out optimization calculation, and (6) carrying out comparison, analysis and assessment. The method studies and tries the optimization and assessment of the medium and long term trans-regional trans-provincial deals under the actual power grid operation data, finds out a deal strategy with the priority of economical benefits or comprehensive benefits as a target based on simplification of a power grid model, and carries out optimization and assessment of the medium and long term trans-regional trans-provincial deals, thereby bringing certain guide significances on improving the economy, safety and standardability of a deal scheme. The method can relieve the power shortage situation through trans-regional trans-provincial deals when the power structures in electric energy areas are different, realizes optimized distribution of electricity in a larger range, compensates the shortage through the surplus among the areas, and effectively relieves the imbalance between supply and demand in the areas short of power supply.
Owner:STATE GRID CORP OF CHINA +1

Geological map database establishing device and geological map database establishing device method based on geological database

The invention discloses a geological map database establishing device based on a geological database. The geological map database establishing device comprises a grid map vectorization module, an automatic attribute content acquisition and improvement module, a vector data mapping expression and map face finishing module and a quality inspection working module. The core characteristics of the process technology are as follows: a geological database management model, attribute recording and automatic acquisition, object-oriented vectorization, geological lettering and automatic code generation and updating, symbol management and mapping expression and quality inspection software. The geological map database establishing device disclosed by the invention has the advantages that the technical problems of low database establishing efficiency and difficult application of the geological mineral map are solved, the data quality of the geological map is improved, and the storage space of result data is less than the original storage space; the problem of disconnection between data acquisition of the geological mineral map at the earlier period and management of a relational database at the later period is solved, so that the database of the geological mineral map has good succession and integrity; and the current situation of low-efficiency management of the current geological special map data set by the traditional document type database is broken through, high-efficiency management of the relational database is realized, and the current situation that the geological special map data set is large so as to be difficult to manage is changed.
Owner:DEV RES CENT OF CHINA GEOLOGICAL SURVEY

Geographic-information-based comprehensive pipeline data two-dimensional and three-dimensional integrated organization method

The invention, which relates to the technical field of data organization, discloses a geographic-information-based comprehensive pipeline data two-dimensional and three-dimensional integrated organization method. The method comprises steps of establishing a pipeline data source, establishing a pipeline data set, establishing a pipe line type and carrying out storage, and adding an element type index and carrying out storage. With the method provided by the invention, technical problems of geographic-information-based two-dimensional and three-dimensional integrated management of underground pipe network data and spatial data organization, retrieving, and analysis can be solved effectively. Inquiring and rendering of pipeline elements can be realized conveniently by organized processing on pipe points and pipelines in an underground pipe network; the access efficiency of pipe network information in a three-dimensional scene can be improved; and the unified display, management and analysis level of a plurality of underground pipe network systems with different attribute can be enhanced. An important basis is provided for obtaining and construction plans of underground pipe network spatial information in smart city building and large-scale development and utilization of urban underground spatial resources can be promoted during rapid development of urban construction.
Owner:星际空间(天津)科技发展有限公司

Real-time browsing method for three-dimensional underground space full-element model

The invention discloses a real-time browsing method for a three-dimensional underground space full-element model, and relates to a technology for displaying virtual reality on a display screen. The method comprises the following steps of performing unification processing on underground space source data; performing dynamic three-dimensional model construction on stratum data; performing entity model construction on underground space data except the stratum; and performing real-time mutex scheduling browsing on three-dimensional underground space full-element data. The method has the advantages that: on the basis of preprocessing the data, real-time update is performed through seamless integration of the three-dimensional space data in syntax, semantics and model level with a data mining method, so that effective integration of multi-source data and efficient creation of three-dimensional scenes of underground space of various scales are realized, dynamic real-time scheduling browsing of the underground space full-element data model is realized, and the scientificity and safety of urban underground space planning are improved; and the unified display, management and analysis level of the underground space is improved.
Owner:星际空间(天津)科技发展有限公司

Materials failure analysis method

The invention a materials failure analysis method, comprising the following steps: acquiring a failure background of a failed part; inspecting appearance of the failed part to obtain failure information of the failed part; searching a materials failure analysis database for materials failure data matching with the failure background / or failure information to obtain estimated failure causes for the failed part; viewing a fracture of the failed part according to the estimated failure causes to obtain a failure mode of the failed part; comparatively analyzing the failed part and a non-failed part via a materials analysis method to obtain comparative results; according to the failure mode and the comparative results, determining failure causes for the failed part. It is possible to increase efficiency and level of a materials failure analyst by using the invention.
Owner:SAIC GENERAL MOTORS +1

Construction method of engineering geological section map

InactiveCN106709988ARealize dynamic real-time schedulingImprove science3D modellingGeological surveySurvey result
The invention discloses a construction method of an engineering geological profile, relating to the technical field of geological survey. The method is characterized by comprising the following steps of the determination of boreholes used by constructing a section map, borehole data organization, stratigraphic section line connection, and section map auxiliary element improvement. The method has the advantages that based on the preprocessing of data, a data mining method is used, and through the geological data seamless integration in the levels of syntax, semantic and model, the real-time updating is carried out, and the effective integration of multi-source data is realized. The method is applied to the expression of a survey result in a project is included and the expression of a survey result in design, analysis, construction related to geotechnical engineering is included. The method is applied to the expression of a survey result in the design, mining and recovery of an underground space is included, and the planning efficiency of a city underground space is improved.
Owner:天津市勘察设计院集团有限公司 +1

Method for determining volatile components in millet wine

The invention provides a method for determining volatile components in millet wine, belonging to the field of flavor analysis of the millet wine. According to the method, a solid phase micro-extraction (SPME) technology is adopted to be combined with a two-dimensional gas chromatography-time-of-flight mass spectrometer (GC*GC-TOFMS) technology to carry out a qualitative and semi-quantitative analysis on the volatile components in the millet wine. The established method can be used for rapidly and comprehensively analyzing the trace volatile components in the millet wine. The solid phase micro-extraction technology has the advantages of no solvent, rapidness, simplicity and convenience; the volatile components in the millet wine can be effectively enriched; the full-two-dimensional gas chromatography-time-of-flight mass spectrometer technology is used for efficiently carrying out separation and identification on the complicated volatile components in the millet wine; the sensitivity and the accuracy of an analysis method can be improved obviously. The method is used for further improving an analysis level of volatile trace components in the millet wine of China and has the important meanings on improving the quality of the millet wine.
Owner:JIANGNAN UNIV

Method for determining content of micro chlorine ions in surface treatment solution

The invention provides a method for determining the content of micro chlorine ions in a surface treatment solution. According to the method, the concentration of chlorine ions to be measured in the solution is improved by means of adding a certain amount of standard solution, so that the content of the micro chlorine ions in the surface treatment solution can be determined rapidly and accurately, and the content of the detected micro chlorine ions is enabled to achieve n ppm level. The method can be applied to the determination of the content of the micro chlorine ions in the surface treatment solutions such as chrome plated, aluminium alloy sulfuric acid anodization, aluminium alloy hard anodization, aluminium alloy chromic acid anodization, aluminium alloy chromic oxalate anodization, various aluminium alloy anodization dichromate sealing, various aluminium alloy anodization nickel acetate sealing and the like.
Owner:GUIZHOU HONGLIN MACHINERY

Scientific and technological subject management system

ActiveCN108021628AShow relevanceTimely reflection gatheringSpecial data processing applicationsSubject matterUser management
The invention discloses a scientific and technological subject management system. Scientific and technological achievements are associated to scientific and technological entries according to a research category which the achievements belong to and a ratio, and scientific and technological personnel are associated to the scientific and technological entries according to a research category involved by research achievements and achievement levels; the management of the entries is realized by field experts through adopting a weighted voting mechanism, and non field experts do not have managementfunctions; both new word storage and inter-entry structure change need a field expert team to vote, and a sum of weights of the field experts needing to participate in voting reaches a set threshold.A scientific and technological entry management system realizes the thought; functional modules of user management, achievement management, entry management, new word management and the like are provided; and a basis can be provided for further analysis of scientific and technological data.
Owner:SOUTH CHINA UNIV OF TECH

Method for discriminating house property data identity of different information sources

InactiveCN109977287APrice expectationsExact identity testData processing applicationsWeb data indexingWeb siteData science
The invention relates to a method for discriminating house property data identity of different information sources, and belongs to the technical field of internet data analysis and mining. The identity discrimination method is based on the house data published by Lianjia, 5j5j, Zhongyuan and Maitian websites and the correlation thereof. The characteristics of the house data are analyzed, the repeated house data are removed through the three steps of regional duplicate removal, community duplicate removal and house duplicate removal, the house data are described according to the characteristicsof actual house objects, and although the described angles and modes are different, the data have very high correlation. According to the method, the house data from different websites can be duplicated, the identity of the house data from different information sources can be accurately and efficiently judged, the duplicated areas and cells can be effectively removed, the effective fusion of thehouse data oriented to multi-source heterogeneity can be achieved, and the clean and orderly data are provided for the real estate market analysis.
Owner:NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT

Dynamic construction method of three-dimensional geological section model

The invention, which relates to the technique of displaying virtual reality at a display screen, discloses a dynamic construction method of a three-dimensional geological section model. The dynamic construction method comprises the following steps: setting a section; extracting, determining and perfecting underground data; extracting and adjusting stratum data; intersecting a stratigraphic section with a stratum data structure; generating a section data structure; and forming a three-dimensional model. The dynamic construction method has the following advantages: the method plays a helping role in obtaining and constructing underground spatial information in urban construction, especially future smart city construction; the three-dimensional development of urban space and underground commercial traffic development and utilization can be promoted; and three-dimensional modeling can play a prominent role in geological research in underground mineral resource exploitation and geological research work.
Owner:星际空间(天津)科技发展有限公司

Alarm condition analysis system

The invention discloses an alarm condition analysis system, and the system comprises a data resource system which is used for carrying out data processing on text information, and converting unstructured text information into structured text information; an external service system used for providing an external service component interface for a user to call; and a data application system used fortransversely associating and analyzing the structured text information according to user requirements. According to the system, mass unstructured text information is integrated and processed into structured text information through the data resource system, and the structured text information is subjected to association analysis and practical application through the external service system and thedata application system. Under the background environment of big data, large-scale alarm condition related text data are integrated and analyzed to meet the application requirements of police users on the alarm condition related text data, the information analysis level is improved, and then the information service capability of public security organs is improved.
Owner:CHINA ACADEMY OF ELECTRONICS & INFORMATION TECH OF CETC

Method for optimizing RH dynamic decarburization based on flue gas analysis

The invention relates to a method for optimizing RH dynamic decarburization based on flue gas analysis. The method comprises the following steps that: 1) a data acquisition and processing system acquires, analyzes and processes exhaust gas component data and exhaust gas flow data in RH production in real time and transmits the data to a RH control system; 2) a RH dynamic decarburization model is established in the RH control system according to the data of the RH control system and practical demands of production; 3) a data analysis and reasoning module arranged in the RH control system carries out further analysis and processing on results output by the RH dynamic decarburization model by using a fuzzy control method based on a neural network; and 4) accurately monitoring the carbon content of molten steel and timely adjusting the technological parameters of decarburization so as to eventually increasing the hit rate of the carbon content at a terminal point. The method provided by the invention provides important technical means for controlling and improving molten steel treatment quality under RH vacuum refining production conditions and has good operability and practical application effect.
Owner:ANGANG STEEL CO LTD

Visualized analysis method for temperature field of continuous casting crystallizer

ActiveCN105511419AControl and improve surface qualityOptimize the temperature distribution stateTotal factory controlProgramme total factory controlCollection systemData analysis system
The invention relates to a visualized analysis method for the temperature field of a continuous casting crystallizer. According to the visualized analysis method, randomly visual temperature monitoring for the internal temperature field of the crystallizer is realized via a fuzzy control method of the neural network. Temperature data signals are collected by a temperature collection system in a PC, filtered, and then sent to a data analysis and knowledge inference module in a data analysis system via a communication system; the data analysis and knowledge inference module establishes a differential temperature field model according to the received data, and analyzes the collected temperature data based on the fuzzy control method of the neural network; and visualized analysis is carried out on the casting process and the temperature field of the crystallizer. The visualized analysis method provides importance means of controlling the casting production condition and improving the surface quality of steel, full-time, dynamic and visualized analysis on the temperature distribution of the crystallizer can be realized in the system, full-flow visualization in the aspect of temperature field analysis of the crystallizer is realized in a steel mill for the first time, the analysis level of the metallurgy process is greatly improved, and the method is worthy of popularization.
Owner:ANGANG STEEL CO LTD

Industry characteristics analyzer with artificial behavior learning capability

The invention discloses an industry characteristics analyzer with an artificial behavior learning capability, pertaining to the technical field of intelligent information processing technology and big data analyses. The industry characteristics analyzer comprises a dynamically-supplemented industry characteristics sample library. The analyzer is used for extracting industry rules out of two samples in a concentrated mode in the industry characteristics sample library according to the certain strategy in order to form an industry analysis rule library. When receiving analysis tasks, an analysis engine is used for analyzing inputted unknown characteristics tests according to the industry analysis rule library, adjusting analysis results, recognizing characteristics and achieving learning capability.
Owner:NANJING LES INFORMATION TECH

Safety detection method for excitation carbon brush of generator and early warning system

PendingCN110487417AImprove stable operation monitoring capabilitiesImprove early warning capabilitiesRadiation pyrometryAlarmsEarly warning systemEngineering
The invention relates to the technical field of safety detection for an excitation carbon brush of a generator, and discloses a safety detection method for an excitation carbon brush of a generator. The safety detection method realizes accurate analysis and early warning of a monitoring target in real time, eliminates the shortcomings of dead angles, no tracking analysis, low accuracy, gap measurement and high labor intensity of the original detection method, enables the potential safety hazards of the excitation carbon brush of the generator to obtain comprehensive and early warning, and provides a reliable underlying data foundation for the realization of a smart power plant. According to the invention, infrared thermography is successfully applied to the excitation carbon brush monitoring of the generator, the carbon brush area is drawn on a thermal image video by applying a computer technology, a unique corresponding relation is formed between the carbon brush area and the positionof a physical carbon brush, and non-contact intelligent detection is carried out on the carbon brush, so that the stable operation monitoring capability of a generator excitation system is improved,and the accident early warning capability, the analysis level and the response efficiency of the power plant are facilitated to be improved.
Owner:深圳大成智能电气科技有限公司

Mass geological data two-dimensional and three-dimensional integrated management method

A mass geological data two-dimensional and three-dimensional integrated management method relates to the field of data processing management, and comprises the following steps: creating a geological data source and a geological data set; creating a geological class and storing geological data; adding, storing and querying geological class space indexes; and adding, storing and querying the geological paging index. The method has the advantages that the technical problems of two-dimensional and three-dimensional integrated management, spatial data organization, retrieval and analysis and the like based on massive geological data in geographic information can be effectively solved.
Owner:星际空间(天津)科技发展有限公司

A Time-Space Analysis System for Traffic Accidents

The invention provides a traffic accident time-space analysis system, comprising a data layer: collecting basic geographic information data, data cleaning and fusion checking, and establishing a standardized accident data warehouse; an application layer: according to the standardized accident data warehouse, analyzing the accident-prone area, digging out the cause, establishing the cause countermeasure database, and putting forward the rectification suggestions; and a display layer: displaying the analysis results of the application layer, including traffic accident information, frequent occurrence area, cause report, frequent occurrence position renovation proposal report. This system is based on a Browser / Server distributed architecture of a network geographic information system to build, improve traffic accident data management and analysis level, gets rid of the terminal restraint, and can be isolated traffic accident data integration analysis. Through the iteration of the coding algorithm, the exact location of the traffic accident can be obtained. The accident cause analysis model is established by using comparison statistics, regression analysis and cluster analysis model todiagnose the cause of traffic accident at the characteristic level, and the accident cause countermeasure database is established.
Owner:园测信息科技股份有限公司

Method for quickly analyzing ocean elements of sea area around ship position

The invention discloses a method for quickly analyzing ocean elements of a sea area around a ship position. The method comprises the following steps: (1) carrying out interpolation processing on thermohaline flow data acquired by a ship track, and further performing processing to obtain an ocean thermohaline flow distance flat matrix; (2) performing empirical orthogonal function decomposition on the ocean thermohaline flow distance flat matrix to obtain a modal result; (3) performing significance test on the modal result, and judging whether the modal result has physical significance or not toobtain an effective modal result; (4) establishing a target functional by utilizing an effective modal result, solving a minimum value of the target functional, and constructing a real-time analysismodel; and (5) substituting a modal result obtained by decomposition in the step (2) into the real-time analysis model to obtain a real-time analysis result of the marine thermohaline flow elements ofthe sea area around the ship position, thereby realizing real-time prediction of the thermohaline flow elements of the sea area around the ship when the ship sails in the unknown sea area. Through anempirical orthogonal function method, the four-dimensional thermohaline flow field is decomposed and analyzed, so that real-time analysis of ocean thermohaline flow elements of sea areas around a boat position is realized.
Owner:TIANJIN UNIV

Power distribution network power flow dynamic equivalence method and system integrating distributed power sources and loads

The invention discloses a power distribution network power flow dynamic equivalence method and system integrating a distributed power supply and a load. The method comprises the following steps: dividing a research time period T into K time sections, and obtaining system power flow data before equivalence corresponding to each time section Tk; for the time section Tk, respectively solving apparentpower loss of each branch under the independent action of a distributed power supply and a load in a research area at the moment k; comprehensively considering the interaction influence of the distributed power supply and the load, and calculating the comprehensive equivalent impedance Zkeqcom; considering the dynamic change of the operation mode in the research time period T, weighting the comprehensive equivalent impedance Zkeqcom corresponding to each time section Tk to obtain an average value, and obtaining the power distribution network dynamic equivalent impedance Zeqdyn of the comprehensive distributed power supply and the load in the T time period; and removing an original research area power distribution network in the simulation data, replacing the original research area power distribution network with a distributed power supply and a load in the original research area, respectively summing, and accessing an equivalent point through a dynamic equivalent impedance Zeqdyn. According to the invention, the order and complexity of load flow calculation are reduced.
Owner:STATE GRID ELECTRIC POWER RES INST +3

Information display method and device, electronic equipment and computer readable medium

PendingCN114493641AImprove the level of fitAvoid problems that make it difficult to accurately determine causal factorsDatabase management systemsNeural learning methodsComputer hardwareTarget array
The embodiment of the invention discloses an information display method and device, electronic equipment and a computer readable medium. A specific embodiment of the method comprises the steps of obtaining a historical data set; determining a standard batch index set based on the historical data set; determining a target array based on the historical data set; determining an index array based on the standard batch index set; determining a performance index array based on the index array and the target array; determining a threshold value; in response to the fact that the performance index array is not larger than the threshold value, performance influence indexes are determined; and pushing the performance influence index to a target device with a display function, and controlling the target device to display the performance influence index. According to the embodiment, the structured target array is generated. And determining the index array as a benchmark to realize the relativity analysis of elements in the target array. The performance influence index is determined through the control threshold, the key factors influencing the target array can be effectively extracted, the fitting level of the target array influence factors is improved, and the performance efficiency is improved.
Owner:多点(深圳)数字科技有限公司

Communication method between the electric vehicle charging and discharging monitoring center and the local monitoring of the charging station

The invention provides a method for communicating a charge-discharge monitoring center of an electric automobile with local monitoring modules of a charging station. The method is characterized by comprising the following steps: 1, the charge-discharge monitoring center and a plurality of local monitoring modules are connected through Ethernet; 2, the local monitoring modules acquire information of each charge-discharge station; 3, the charge-discharge monitoring center provides a part of control instructions according to the received information; and 4, the local monitoring modules directly control charge-discharge motors according to the part of control instructions, and the operation jumps to the step 2. According to the method disclosed by the invention, the charge-discharge monitoring center and the plurality of local monitoring modules are connected through Ethernet to carry out communication and information interaction and uniformly control policies, device start or stop of the charge-discharge motors, power size and charge-discharge state switching, thus a system is managed in a unified way and optimally runs, and centralized storage of real-time monitoring and historical data is realized.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +2

An online measurement and control method for reducing the risk of DC commutation failure

The invention provides an online measurement and control method for reducing the risk of DC commutation failure, which specifically includes the following steps: collecting the amplitude information of the transformer group, and transmitting the collected amplitude information to the lower computer; collecting the phase of the transformer group information, and transmit the collected phase information to the lower computer; the lower computer processes the amplitude information and phase information respectively, and sends the obtained amplitude information digital sampling value and phase information digital sampling value to the upper computer; the upper computer The digital sampling value of the amplitude information and the digital sampling value of the phase information are processed to obtain the amplitude spectrum, phase spectrum and phase sequence; the phase calibration method is used to iterate the amplitude spectrum and phase spectrum; the power quality information is analyzed and controlled by the switch The signal performs the corresponding control operation on the system switch. Compared with the prior art, the invention has the advantages of convenient testing, high efficiency, accurate measurement of each harmonic below the 31st order, and an error of less than 0.2%.
Owner:STATE GRID CORP OF CHINA +3

Overhead transmission ground wire strand contact effect analysis method and system

The invention discloses an overhead transmission ground wire strand contact effect analysis method and system. The method comprises the following steps: determining a total stiffness matrix for overall analysis of the overhead ground wire, establishing a tension analysis method during the overall analysis of the overhead ground wire; The method comprises the following steps: determining the stresscondition under the action of dead weight and external load, establishing a fine stiffness matrix and an external load vector of the strand, establishing a nonlinear contact analysis method of the strand, determining the contact force between the strand, establishing a nonlinear iteration algorithm of the contact force of the strand, determining the stress balance equation of the whole ground wire, and analyzing and calculating the contact force of each strand of the ground wire. The system comprises an overhead ground wire parameter analysis module, an overhead ground wire stiffness matrix analysis module, an overhead ground wire tension analysis module, a braided wire stiffness matrix and external load analysis module, a braided wire stress equation analysis module and a braided wire contact stress analysis module. According to the method provided by the invention, the contact stress of each strand of the overhead ground wire can be accurately and effectively analyzed, and the finerequirement of actual engineering analysis is completely met.
Owner:STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +2

Engine performance parameter correction method based on in-orbit data

The invention proposes an engine performance parameter correction method based on on-orbit data, and the method comprises the steps: correcting the performance parameters of the engine through the on-orbit actual performance data, thereby facilitating the improving of the analysis level of the on-orbit data, and deepening the understanding of the working performance of an engine. According to the method, the engine performance parameters can be corrected without redundant hardware, the estimation precision of the on-orbit residual propellant can be improved, the prediction precision and orbital transfer efficiency of the on-orbit thrust can be further improved, waste of the propellant can be avoided, and the method has great significance on long-term on-orbit management of subsequent satellites.
Owner:BEIJING INST OF CONTROL ENG
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