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240 results about "High incidence" patented technology

It refers to the rate of occurrence for something that happens regularly. A crime that has a high incidence is one that is committed often. Likewise, an intersection with a high incidence of vehicle accidents should be evaluated by a traffic committee.

Clinical safe and rational administration decision support system

The invention belongs to a clinical administration management system, in particular to a clinical safe and rational administration decision support system. The system at least comprises the following modules: a clinical rational administration specification module, a safe administration checking module, a medical care administration prompt and non-medical care medicament use management module, a rational administration supervision module, a hospital infection supervision module and an information island module, wherein the clinical rational administration specification module is used for storing administration standards of clinical common diseases and high-incidence diseases, the administration standards are acquired by comparing, discriminating and counting the known clinical common diseases and high-incidence diseases, and when the pathological information of a patient is input into a doctor's advice decision unit through input equipment, the doctor's advice decision unit compares the pathological information of the patient with pathological information of the clinical common diseases and high-incidence diseases. The invention provides a clinical safe and rational administration decision support system, which can rapidly, economically and effectively supervise disordered, trial and experiential clinical administration.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

Variable geometry inlet guide vane

An inlet guide vane provides improved, smooth airflow and avoids separation of flow even at high incidence angles. The inlet guide vane includes a strut having opposite side surfaces that are continuously curved to provide a controlled velocity distribution at the trailing edge of the strut. The inlet guide vane further includes a flap having a leading edge aligned behind the trailing edge of the strut. Generally, the strut and the flap are designed together so that low momentum air in the gap between the strut and the flap will be energized and entrained in the boundary layer of the flap. The airflow from the gap will remain attached to the flap to improve the flow from the flap.
Owner:RTX CORP

Hard tinned sheet steel and its production method

The invention relates to a hard tinned sheet steel produced from low carbon aluminium killed steel so as to solve the technical problems of easy appearance of local edge waves during current pickling rolling production of tinned sheet steel, high incidence of surface iron oxide scale during continuous annealing production, high yield ratio of tin plates, undesirable stamping processing and the like. The hard tinned sheet steel and its raw sheet comprise the following chemical components (by weight): 0.05-0.07% of C, less than or equal to 0.1% of Si, 0.20-0.30% of Mn, less than or equal to 0.020% of P, less than or equal to 0.020% of S, 0.010-0.060% of Alt, less than or equal to 0.0060% of N, and the balance Fe and some inevitable impurity elements. The production method of the hard tinned sheet steel includes: steelmaking, continuous casting, hot rolling, combined pickling rolling, continuous annealing, double-stand tempering, and electrotinning. The hard tinned sheet steel produced in the invention has the advantages of small production control difficulty, excellent appearance quality, thin specification, stable hardness, and good stamping processing performance, etc., can meet the use requirements of high-speed canning, and can be widely used as a food cans, beverage cans, aerosol cans and other packaging materials.
Owner:SHANGHAI MEISHAN IRON & STEEL CO LTD

Clinic safe and reasonable drug use decision supporting method

The invention belongs to a clinic drug use management system, and particularly relates to a clinic safe and reasonable drug use decision supporting method. The clinic drug use management system at least comprises a clinic reasonable drug use standard database, information input equipment and a doctor advice decision unit, wherein when the pathological information of a patient is input to the doctor advice decision unit through the patient information input equipment, the doctor advice decision unit compares and discriminates the pathological information of the patient with the pathological information of common clinical diseases and high-incidence diseases stored in the clinic reasonable drug use standard database, drug use standard doctor advice information is displayed through the doctor advice decision unit, the drug use standard doctor advice information displayed by the doctor advice decision unit is further screened through the information input equipment, and the screened drug use standard doctor advice information is further compared and discriminated by the doctor advice decision unit through a safe drug use monitoring database, and confirmed doctor advice is obtained through the doctor advice decision unit and provided to the patient. The clinic safe and reasonable drug use decision supporting method can rapidly, economically and effectively monitor disordering, attempt and experience trends of clinic drug use.
Owner:XIAN FUAN INNOVATION CONSULTATION

Methods and modified cells for the treatment of cancer

The present invention provides methods of preventing and / or treating cancers (including tumors). In one preferred embodiment, the invention is practiced to induce regression of an existing cancer or tumor and / or to prevent metastasis and / or to prevent growth of metastatic nodules. In other preferred embodiments, the invention may be used as a prophylaxis to prevent the development of primary cancers through a childhood or adult vaccination program against specific tumor antigens for cancers with high incidences. In an alternate preferred embodiment, the present invention provides methods of establishing an immune response against a universal artificial tumor antigen through a childhood or adult vaccine program, thus providing a long-term immune response that can be utilized at any point to treat any cancer which develops later in life. The present invention also provides cancer and tumor cells stably expressing an artificial antigen, preferably an artificial cell-surface antigen.
Owner:NORTH CAROLINA AT CHAPEL HILL UNIVERSTIY OF THE

Micro-sized weed and feed particles having enhanced properties

Herbicide-fertilizer combination granular products are described comprising singular, or blended, basic fertilizer granular materials and impregnated with or coated thereon a herbicidal material for controlling broadleaf weeds postemergence. The weed and feed fertilizer products uniquely are characterized by the size, weight and physical property of the fertilizers and any filler particles contained in the weed and feed fertilizer blend product in that the particle size is substantially in the micro-sized range of 500 to 1500 microns; the particle weight generally is less than one-tenth that of customary regular-sized weed and feed particles; and there is a greater cohesion of the particle to the weed foliage. These micro-sized particles exhibit a significantly higher incidence of contact with and greater adhesion to the foliage of weeds thus providing superior weed control.
Owner:AGRIUM POLYMER COATINGS CORP

Probe set and reagent kit used for detecting pathopoiesia/susceptibility genes of congenital megacolon and relative syndromes

The invention provides a probe set and a reagent kit used for detecting pathopoiesia / susceptibility genes of congenital megacolon and relative syndromes. At most 172 pathopoiesia / susceptibility genes related to diseases can be detected at the same time, and reference can be provided for affected individual molecular genetics diagnosis, mass survey of congenital megacolon high-incidence areas, screening of high-risk affected groups in congenital megacolon family members and corresponding genetic counseling or prenatal intervention.
Owner:首都儿科研究所 +1

Variable geometry inlet guide vane

An inlet guide vane provides improved, smooth airflow and avoids separation of flow even at high incidence angles. The inlet guide vane includes a strut having opposite side surfaces that are continuously curved to provide a controlled velocity distribution at the trailing edge of the strut. The inlet guide vane further includes a flap having a leading edge aligned behind the trailing edge of the strut. Generally, the strut and the flap are designed together so that low momentum air in the gap between the strut and the flap will be energized and entrained in the boundary layer of the flap. The airflow from the gap will remain attached to the flap to improve the flow from the flap.
Owner:RAYTHEON TECH CORP

Disease prediction method based on automatic medical specialist knowledge extraction

The invention relates to a disease prediction method based on automatic medical specialist knowledge extraction, and belongs to the technical field of intelligent medical treatment. The method comprises the following steps: firstly, constructing a disease relation network according to historical diagnosis record data, calculating the disease feature vectors on the network through the explicit andimplicit correlations between the disease entities by using the neural network model, and calculating the correlation matrix between the diseases through disease feature vectors to serve as medical specialist knowledge; secondly, designing a disease prediction model based on deep learning, and subjecting the original medical index data of the patient to dimensionality reduction through a noise reduction self-encoder stack model, and predicting the potential disease of the patient by taking the data as the input data of the multi-label disease prediction model; and finally, in the parameter learning part of the model, taking a disease similarity matrix which is automatically extracted in the first step as a medical background constraint condition, making an optimal parameter of the algorithm learning model, and taking a disease with relatively high incidence probability as a prediction result. Compared with the prior art, the disease prediction accuracy is improved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Method for Suppressing Surgical Site Infection and Column to be Used for the Method

An object of the present invention is to provide a method for suppressing surgical site infections (SSI) that have occurred at extremely high incidence rates at the time of surgical operations and particularly surgical operations on digestive system organs, and to provide a column to be used for the method. According to the present invention, a method is provided for suppressing surgical site infections, which comprises the steps of: (a) administering a chemotherapeutic drug for treating and / or preventing a surgical site infection; and (b) collecting blood from a surgical subject and removing leukocytes that comprise neutrophils from the blood during or within 24 hours after surgical operation, and then returning the blood from which the leukocytes have been removed to the surgical subject. The present invention also provides a column for blood circulation which is filled with a carrier having affinity for leukocytes comprising neutrophils, which is used for suppressing a surgical site infection during or within 24 hours after surgical operation on a digestive system organ.
Owner:ASAHI KASEI MEDICAL CO LTD

Device and method for detecting specific object in sequence of images and video camera device

A device for detecting a specific object includes: a suspect object region detection unit configured to create a foreground mask of each frame of image in a sequence of images and perform an inter-frame differential process on the foreground masks to detect a suspect object region; a unit for modeling a region with high incidence of false positive configured to, if at least one suspect object region is detected, determine a suspect object region satisfying a predetermined condition as a region with high incidence of false positive and build a model of each determined region; a post-processing unit configured to match each suspect object region not determined as a region with high incidence of false positive against at least one corresponding model, and detect the specific object according to a sequence of mismatching suspect object regions; and determine absence of the specific object if no suspect object region is detected.
Owner:SONY CORP

Method and apparatus for controlling topological variation on a milled cross-section of a structure

An improved method of controlling topographical variations when milling a cross-section of a structure, which can be used to reduce topographical variation on a cross-section of a write-head in order to improve the accuracy of metrology applications. Topographical variation is reduced by using a protective layer that comprises a material having mill rates at higher incidence angles that closely approximate the mill rates of the structure at those higher incidence angles. Topographical variation can be intentionally introduced by using a protective layer that comprises a material having mill rates at higher incidence angles that do not closely approximate the mill rates of the structure at those higher incidence angles.
Owner:FEI CO

Autoantibody joint detection ELISA kit for screening early esophageal cancer

The invention belongs to the technical field of tumor medicine, and particularly discloses an autoantibody joint detection ELISA kit for screening early esophageal cancer. The kit comprises a solid-phase carrier and tumor-associated antigens coated on the solid-phase carrier, wherein the tumor-associated antigens are EYA4, ABL1, ATF2, CD38, NOTCH1, ZBTB20, BCL2L1 and P53. Furthermore, the kit alsocomprises a sample diluent, a second antibody, a second antibody diluent, positive control serum, negative control serum, a color developing solution, a stop solution and a washing solution. The ELISA kit provided by the invention can effectively detect esophageal cancer, especially early esophageal cancer, has the detection sensitivity of 94% and the specificity of 79%, can be used for large-scale screening of asymptomatic people in high-incidence areas of esophageal cancer, and is beneficial to screening and early discovery of asymptomatic high-risk population.
Owner:THE FIRST AFFILIATED HOSPITAL OF ZHENGZHOU UNIV +1

Apparatus and Method for Inspecting Laminated Structure

Disclosed is an apparatus, method and system for inspecting structures, and more particularly for evaluating the condition of a structure. The disclosed nondestructive inspection testing method and apparatus enables an operator to assess the condition of a structure, such as a composite laminate part and determining the location and depth of anomalies. The method includes generating a subsurface longitudinal ultrasonic wave signal at a high incidence angle into a structure being evaluated and collecting at least one of any front, back or side reflected wave data. The method may include processing the reflected wave data to determine the condition of the structure, including any anomalies that may have been detected and their location, size and shape.
Owner:THE BOEING CO

Distribution network fault information comprehensive collection and management platform

The invention discloses a distribution network fault information comprehensive collection and management platform which comprises a fault information collection system, a fault high-incidence section early-warning system, a fault information processing and pushing system, a fault information database analysis system and a client database analysis system.Fault information collected by an automatic fault service information collecting module comprises user fault service information, switch displacement fault information and distribution transform and user fault information.A distribution network emergency repair command worker carries out power grid topology analysis according to the fault information, obtains detailed power failure user information, manages power failure management service data in real time, carries out real-time fault information screen pushing and real-time fault searching, labels a fault position on a geographic map in real time, displays a fault influence range, perfects a client database, carries out monitoring and analysis according to client power utilization behaviors, and provides diversified power supply services.
Owner:JINAN CITY CHANGQING DISTRICT POWER SUPPLY CO OF STATE GRID SHANDONG ELECTRIC POWER CO +1

High incidence dissymmetry eddy single-hole site micro-blowing disturbance active control method and device

The invention relates to a high-incidence asymmetric vortices single-hole micro-blowing positive control method and a corresponding apparatus. The method includes the following steps: step 1. the apparatus is manufactured and prepared well; step 2. the model state and air supply are regulated; and step 3. the lateral force control is carried out. The apparatus comprises a rotary blowing head, a micro-blowing assembly and an air-supply and flow regulating device which is formed by a nitrogen bottle, a pressure-reducing valve, a flow meter, a pressure meter, a gas pipeline and a single-hole micro-blowing model. The pressure of the high-pressure gas in the nitrogen bottle is reduced to 0.4 to 0.6 MPa through the pressure-reducing valve and then the gas is injected through the flow meter, the pressure meter and the gas pipeline into the rotary blowing head of the single-hole micro-blowing model; then the control gas is blown to a flow field through a stainless-steel pipe, a guide vent and a blowing vent so as to control the asymmetric vortices and the blown flow is controlled by regulating the flow meter. The blowing vent on the rotary blowing head is arranged on a position which is away from the head tip of the model by 3mm; and the smaller the distance between the blowing vent and the head tip is, the better the effect is.
Owner:BEIHANG UNIV

Uterine cervix brush

The invention relates to a cervix brush, comprising a sheath tube, a core pole, a scraper, villus and a guiding head; wherein, the scraper, the guiding head and the sheath tube are formed by integrated injection molding, the guiding head is arranged at the foremost end of the sheath tube, the scraper comprises six plastic strips which can be detached to triangles, the front end of the scraper is connected with the guiding head, the back end of the scraper is connected with the sheath tube and a easy folded groove is arranged between the connection and the scraper, the core pole is axially sleeved in the sheath tube and is slideable, the head of the core pole is fixed in the guiding head, the villus is cultivated at the front ends of the guiding head, the scraper and the sheath tube, the stress on the surface of the cervix from the six scrapers which can be furled and spread is uniform, in particular that the cells at area with high incidence of the cervical cancer from the one third part outside of the cervical canal to the external cervical orifice can be gotten by the cervix brush. The cervix brush has the advantages of small radial direction size, convenient operation and low manufacturing cost.
Owner:周星

Multi-gene high rice blast resistance material breeding method adopting marker assisted selection

The invention relates to a multi-gene high rice blast resistance material breeding method adopting marker assisted selection, and belongs to the field of rice breeding. According to the method, specific molecular marker assisted selection of rice blast resistance genes pita and pi5 is adopted, field resistance identification is combined, and accordingly, a new disease-resistant variety can be bred effectively. The method comprises implementation modes as follows: 1, parents P1 and P2 containing the rice blast resistance genes pita and pi5 respectively are hybridized with a susceptible parent Liaoxing 1 to establish a resistant and susceptible offspring group; 2, extraction of DNA of single resistant and susceptible offspring, PCR (polymerase chain reaction) amplification and electrophoretic analysis of different markers are performed; 3, the parents P1 and P2, the susceptible variety Liaoxing 1 and the single plant of the hybridized offspring group are planted in a rice blast high incidence area Donggang, Dandong, and leaf blast and spike and stem blast resistance identification is performed at a seedling stage and a maturation stage respectively. In combination of the resistance gene marker selection, the new multi-gene rice blast resistance variety containing pita and pi5 is directionally improved and cultivated.
Owner:天津天隆农业科技有限公司

Detection method of invasive fungus infection, detection kit and application

The invention provides a fast multiplex PCR identification diagnosis detection method of invasive fungus infection based on cfDNA (cell free DNA). The method can be used for identifying the invasive infection caused by clinic common and high-incidence Candida albicans, Candida tropicalis, Candida parapsilosis, Candida krusei, Candida glabrata and Aspergillus fumigtus. An amplification primer is designed according to characteristic genome segments of each fungus category and species; a detection fluorescence probe of a strain can be distinguished according to the amplification segment design; the real time PCR can be performed on a sample to be tested; high sensitivity of nested PCR and high specificity and multi-target performance advantages of multiple fluorescent hybrid probe PCR are integrated for identifying the fungus strain. The invention also provides a PCR diagnosis kit for the invasive fungus infection and application thereof.
Owner:DIASYS DIAGNOSTIC SYST SHANGHAI

Dummy Contact Fill to Improve Post Contact Chemical Mechanical Polish Topography

State of the art Integrated Circuits (ICs) encompass a variety of circuits, which have a wide variety of contact densities as measured in regions from 10 to 1000 microns in size. Fabrication processes for contacts have difficulty with high and low contact densities on the same IC, leading to a high incidence of electrical shorts and reduced operating speed of the circuits. This problem is expected to worsen as feature sizes shrink in future technology nodes. This invention is an electrically non-functional contact, known as a dummy contact, that is utilized to attain a more uniform distribution of contacts across an IC, which allows contact fabrication processes to produce ICs with fewer defects, and a method for forming said dummy contacts in ICs.
Owner:TEXAS INSTR INC

Database access method with high concurrency service-oriented architecture (SOA) technology and system

The invention discloses a database access method with a high concurrency service-oriented architecture (SOA) technology and a system. According to SOA page view, access hit rate high incidence data are calculated to obtain and cached in a hash mode, java script object notiation (JSON) format cache data are obtained and stored in a MAP assemble in a hash method, the MAP assemble is stored in an internal storage or a hard disk, the cache data operated by modifying data in the MAP assemble are stored in a cache mode, the cache data operated by the modifying data are persisted to a database, the cache data are inquired whether to exist or not in the internal storage according to a table name and inquiring conditions when the SOA technology is used for invoking services, if the cache data exist, a cache technology is used for modifying data operations, data processing needed to be modified is taken into a cache, and the cache is eliminated. The database access method with the high concurrency SOA technology and the system can flexibly and effectively perform adding, deleting and modifying operations for data, the data deadlock problem caused by the SOA method high concurrency access database does not need to be worried, the cache further can be eliminated according to the conditions, and the effective hit rate of the cache can be improved.
Owner:OPZOON TECH

High incidence angle retroreflective sheeting

InactiveUS20160011346A1Maximize retroreflectivityDiffusing elementsEngineeringSpecular surface
A retroreflective sheeting is disclosed which comprises a top transmissive layer including a plurality of parallel channel formed perpendicular to a surface of the layer, and a reflective bottom layer including a specular surface or a corrugated transmitting surface. The corrugated surface includes a plurality of linear prismatic elements extending perpendicular to the channels of the top layer. The top and bottom layers reflect light in orthogonal directions and act cooperatively to retroreflect incident light back toward the source, particularly at high incidence angles. Various light management devices employing the retroreflective sheeting are also disclosed.
Owner:VASYLYEV SERGIY

Method for preparing double yolk antibody of porcine transmissible gastroenteritis virus and porcine epidemic diarrhea virus

The invention discloses a method for preparing a double yolk antibody of a porcine transmissible gastroenteritis virus and porcine epidemic diarrhea virus. The method comprises the following steps of: performing porcine transmissible gastroenteritis virus multiplication on porcine kidney cells (PK15); performing porcine epidemic diarrhea virus multiplication on African green monkey kidney cells (Vero); emulsifying the two cell cultures used as antigen with an oil emulsion adjuvant to prepare immunogen, namely, mixing the two kinds of viruses in a ratio of (1-3):(1-3) to prepare the immunogen; immunizing non-immunologic laying hens; and obtaining the double yolk antibody which can prevent and treat porcine transmissible gastroenteritis and porcine epidemic diarrhea based on the collection and purification of the yolk. When the double yolk antibody is used for curing experimental pigs, the clinical symptoms in the experiment are obviously reduced compared with a control group, and the death rate of the experimental group is obviously lower than that of the control group. The double yolk antibody has obvious preventing and treating functions when applied in a pig farm with high incidence rate of the porcine transmissible gastroenteritis and the porcine epidemic diarrhea.
Owner:PU LIKE BIO ENG

Combining radioimmunotherapy and antibody-drug conjugates for improved cancer therapy

Described herein are compositions and methods of use of radionuclide-antibody conjugates (for RAIT) and drug-antibody conjugates (ADC). The combination of RAIT and ADC was more efficacious than either RAIT alone, ADC alone, or the sum of effects of RAIT and ADC. The unexpected synergy resulted in decreased tumor growth rate and increased survival, with a high incidence of tumor-free survival in Capan-1 human pancreatic cancer xenografts in nude mice.
Owner:IMMUNOMEDICS INC

Electric transmission line forest fire grade forecasting method based on five factors

The invention provides an electric transmission line forest fire grade forecasting method based on five factors. The electric transmission line forest fire grade forecasting method based on the five factors comprises the following steps of (1) confirming the value of a fire using high-incidence season factor alpha, (2) confirming the value of a vegetation factor beta, (3) conforming the value of a burning factor gamma, (4) confirming the value of a meteorological factor delta, (5) confirming the value of a rainfall factor epsilon, (6) calculating an electric transmission line forest fire forecasting index X, and (7) obtaining forest fire forecasting grades of the electric transmission line to be forecasted according to the forest fire forecasting index X. The electric transmission line forest fire grade forecasting method based on the five factors is practical, convenient to implement, fast, strong in practicability, convenient to operate, high in forecasting accuracy and high in reaction speed; strong guidance can be provided for a maintenance unit of electric transmission lines to set forest fire prevention strategies and deploy forest fire prevention measures, and important functions performed for maintaining the safe and stable operation of an electric grid are indispensable.
Owner:STATE GRID CORP OF CHINA +2

Method of fabricating electronic component using resist structure with no undercut

A method for milling a structure. A single- or multi-layer resist having no undercut is added to a surface of a structure to be milled, the surface to be milled defining a plane. A milling process, such as ion milling, is performed. The milling process includes milling the structure at high incidence and milling the structure at razing incidence. The milling process can be performed only once, or repeated multiple times. High incidence can be defined as about 65 to about 90 degrees from the plane of the surface being milled. Razing incidence can be defined as about 0 to about 30 degrees from the plane of the surface being milled.
Owner:WESTERN DIGITAL TECH INC

Fluidized bed type cell reactor circulating outside tank and method for cultivating animal cells

ActiveCN101812404AHigh imitation life degreeSufficient gas-liquid mass transfer capacityTissue/virus culture apparatusFluidized bedBiochemical engineering
The invention relates to a fluidized bed type cell reactor circulating outside a tank and a method for cultivating animal cells. The traditional reactor adopts the stirring process of a machine inserted in a tank body, a stirring device structure and lubrication matter thereof frequently resulting in the problem of microbial contamination, the condition that stirring and lubrication carry in bacteria has high incidence, and the shearing of mechanical stirring results in cell death. The fluidized bed type cell reactor comprises a reaction tank body (100), wherein the bottom of the reaction tank body is connected with a swing bed (50) which swings to cause the reaction tank body to eccentrically rotate, the upper part of the reaction tank body is provided with an outer conduit (108), an inlet of the outer conduit is arranged on the inner wall of the cone part of the reaction tank body, the outer conduit is screwed off around the tank body along the outer part of the tank body, a liquid return port (106) at the outlet end of the outer conduit enters the reaction tank body from the center of the bottom of the tank body, a tank cover with an inlet tube and an outlet tube is arranged onthe reaction tank body in which a cell living zone is arranged, and a conical filter screen (112) is arranged above the cell living zone. The invention provides high-quality environment for the cultivation of the animal cells.
Owner:惠识瑶

Organic preparation for controlling cruciferous vegetable club root and application thereof

The invention belongs to the technical field of agricultural sustainable development, relates to preparation of organic preparations and in particular relates to an organic preparation for controllingcruciferous vegetable club root and application thereof. The organic preparation is composed of organic raw materials and decomposition-promoting ingredients, wherein the organic materials include but not limited to one or more of crop straws, saw dust and other solid organic materials and molasses, alcoholic fermentation liquor and other liquid organic materials; the decomposition-promoting ingredients include but not limited to one or more of special microbes and organic catalysts; and a ratio (mass) of the organic raw materials to the decomposition-promoting ingredients is (95-100):(5-0).The invention further discloses a preparation method and application of the organic preparation. The organic preparation disclosed by the invention is ecologically environment-friendly and is applicable to soil with high incidence of club root after continuous cropping of various cruciferous vegetables. The quantity of plasmodiophora brassicae woron in soil and the incidence rate of the club rootof crops can be effectively reduced after treatment, the sterilization rate and the club root control rate respectively reach 60-90%, and the yield of the crops is obviously increased.
Owner:NANJING NORMAL UNIV CHANGZHOU INST OF INNOVATION & DEV

Controller region design method based on quaternion model of aircraft

InactiveCN102692928AGuaranteed stabilityAvoid incorrect approximations such as ignoring aerodynamic effectsAdaptive controlPosition/course control in three dimensionsControl objectiveFeedback controller
The invention discloses a controller region design method based on a quaternion model of an aircraft, and the method is used for solving the technical problem that in the conventional controller design method, the entire stability of the given flight region cannot be directly confirmed. The method comprises the following steps: a balance point of a given control objective height and a Mach number per hour can be obtained through aerodynamic force and torque equations; the region stability of the system can be confirmed through adopting a phase plane analysis model; and the parameter of a feedback controller is confirmed based on the region stability. The three-dimensional high incidence motion of the aircraft can be controlled directly, the neglect of aerodynamic force action and other incorrect approximation in the torque equation can be avoided, so that the stability of the aircraft of the entire design region can be guaranteed through the controller, and the problems such as instable flight and unsafe flight caused by the analysis model can be reduced even avoided.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
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