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720results about How to "Avoid differences" patented technology
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Locking system and flooring board
A locking system for mechanical joining of floorboards. For horizontal mechanical joining there is a projecting portion with a locking element which cooperates with a locking groove in an adjacent board. A tongue-and-groove joint for vertical mechanical joining has cooperating upper abutment surfaces and cooperating lower abutment surfaces which are essentially parallel with the principal plane of the floorboards and of which the lower abutment surfaces are positioned essentially outside the outer vertical plane, i.e. displaced relative to the upper abutment surfaces. The tongue is movable at an angle into the groove and the locking element is insertable into the locking groove by mutual angular movement of the boards about the joint edges.
Owner:VÄLINGE INNOVATION AB
Locking system and flooring board
A locking system for mechanical joining of floorboards. For horizontal mechanical joining there is a projecting portion with a locking element which cooperates with a locking groove in an adjacent board. A tongue-and-groove joint for vertical mechanical joining has cooperating upper abutment surfaces and cooperating lower abutment surfaces which are essentially parallel with the principal plane of the floorboards and of which the lower abutment surfaces are positioned essentially outside the outer vertical plane, i.e. displaced relative to the upper abutment surfaces. The tongue is movable at an angle into the groove and the locking element is insertable into the locking groove by mutual angular movement of the boards about the joint edges.
Owner:VÄLINGE INNOVATION AB
MiRNA with cell corpuscule as vector and preparation research approach thereof and application
InactiveCN101386848AEasy to storeWide detection rangeNervous disorderGenetic material ingredientsEfficacyDisease complication
The invention discloses micro ribonucleic acids (microRNA, miRNA) carried by cell microparticles (Microparticle, MP), a method for preparing the same, and application thereof in the technical field of biotechnological pharmacy. The invention provides a combination of the micro ribonucleic acids for evaluating the physiological and / or pathological states of a participant, and the combination contains all the micro ribonucleic acids which exist stably in serum / plasma particles of the participant and are detectable. At the same time, the invention provides an experimental method for preparing the cell microparticles containing specific micro ribonucleic acids and using the cell microparticles to perform gene-level regulation and control as well as modification on other cells and tissues. The combination and the method can be used for detecting and treating various diseases, including the aspects of the diagnosis and the differential diagnosis of various tumors, various acute and chronic infectious diseases and other acute and chronic diseases, the prediction and the curative effect evaluation of the occurrences of disease complications and the recurrences of malignant diseases, as well as the active ingredient screening, the efficacy evaluation and the judicial authentication of drugs, the detection of prohibited drugs and the like; besides, the combination and the method have the advantages of wide detection pedigree, high sensitivity, low detection cost, convenient available material, easy storage of samples and the like.
Owner:NANJING UNIV
Universal digital television middleware system
InactiveCN101895670AShorten the development cycleReduce development costsTelevision system detailsColor television detailsComputer hardwareOperational system
The invention discloses a universal digital television middleware system, which comprises an interactive application presentation layer, a core service layer and a middleware adaptation layer. In order to realize intercommunication between application development and a platform system of each digital television manufacturer, digital television manufacturers successively launch digital television middleware products thereof. However, due to the absence of a uniform standard, the development difficulty is improved. In order to meet the requirements on digital television multi-hardware interfaces and customized products of the manufacturers and to shield the difference of the digital televisions, home gateway terminals and other products of the manufacturers on the hardware and operating systems, the universal digital television middleware system is provided. The system makes digital television application program-based development irrelevant to hardware lower layers and platforms, and can reduce the development difficulty of application programs and improve the efficiency by providing a universal API interface. Therefore, the application development becomes more simple and convenient, and the openness and portability of the products are stronger.
Owner:SHENZHEN IPANEL TECH LTD +1
Blood serum minuteness ribonucleic acid reagent kit and application in early diagnosis of hepatitis B
InactiveCN101368213AWide detection rangeHigh sensitivityMicrobiological testing/measurementBiotechnologyBlood plasma
invention discloses a kit for a serum micro-ribonucleic acid and the application in the early diagnosing of hepatitis B thereof which belong to the technical field of biotechnological pharmaceutics. The invention provides the combination of the micro-ribonucleic acid used for estimating the physiological and / or pathological states of a normal person, a HBVer and a patient with hepatitis B; the combination comprises all the micro-ribonucleic acids which have differential expression in the serum / plasm of the normal person, the HBVer and the patient with hepatitis B and prepares a diagnosing kit which can be used for the early diagnosing of hepatitis B. The combination and the method can be used for the early detection and nondirective therapy of hepatitis B; besides, the combination and the method have the advantages of high specificity, high efficiency, high sensitivity, low detection cost, convenient material obtaining, and the like. Besides, the samples are easily stored.
Owner:NANJING UNIV
System for linking financial asset records with networked assets
A computer system to reconcile hard assets carried on the financial data reporting computer systems of a corporation or government entity with actual inventory assets discovered on the networks of said entity. Automatic discovery of inventory assets is performed by executing scripts specified in fingerprints of the types of machines the system can recognize. When a machine is found at a live P address, the fingerprint scripts determine the operating system type and extract data from the operating system regarding the attributes of the machine. Hard assets are then imported from the financial data reporting computer system, and automatic reconciliation rules are drafted by a user and run on the asset data to find inventory assets which match hard assets. Linking or pointer data is established to record each match. Then unmatched inventory and hard assets are displayed and manual matching occurs where in the user points to and selects inventory assets which match particular hard assets. Linking or pointer data is then generated for each manual match.
Owner:BNDENA
Method for preparing inorganic hydrous salt phase transition energy-storing material
ActiveCN101235272APrevent overcoolingAvoid separabilityHeat-exchange elementsInorganic saltsPhase change
The invention discloses a preparation process of inorganic salt hydrate phase-change energy-storage material, comprises the following steps that adding 40-60g inorganic salt particles and 3-5g overcooling- resistance agent in 100g water, stirring and mixing to prepare hydrating inorganic salt solution, adding 5-10g poly-sodium acrylate in the hydrating inorganic salt solution, and stirring and mixing to prepare viscous hydrating inorganic salt mixed solution. The preparation process of hydrating inorganic salt phase-change material which is provided by the invention is added with overcooling- resistance agent and poly-sodium acrylate in the preparation process, which can effectively avoid the hydrating inorganic salt phase-change material from generating the phenomenon of over-cooling and phase separation in the phase change process, and ensures hydrating inorganic salt phase-change material to keep uniformity after repeated circulating.
Owner:SHENZHEN INST OF ADVANCED TECH
Pancreatic cancer marker, and detection method, kit and biochip thereof
ActiveCN101942502AEasy to storeWide detection rangeMicrobiological testing/measurementDNA/RNA fragmentationBlood plasmaBULK ACTIVE INGREDIENT
The invention provides a pancreatic cancer marker, and a detection method, a kit and a biochip thereof. The pancreatic cancer marker provided by the invention contains 36 kinds of micro ribonucleic acids which stably exist in the serum / plasma of a person receiving the test and can be detected. The invention also provides a kit and a biochip of tools or elements for detecting the pancreatic cancer marker. The combination, the method, the kit and the biochip provided by the invention can be used for auxiliary diagnosis and differential diagnosis of pancreatic cancers, predication of occurrence and recrudescence of disease complications, evaluation of the curative effect, screening of active ingredients of medicaments, evaluation of pesticide effectiveness and the like, and has the advantages of wide detection range, high sensitivity, low detection cost, readily available raw materials, easy storage of samples and the like; and the method is widely applied to work related to the general survey of pancreatic cancers, improves the specificity and sensitivity which are low in the single marker due to individual difference, obviously increases clinical detection rate of pancreatic cancers and becomes an effective method for early diagnosis of pancreatic cancers.
Owner:JIANGSU MICROMEDMARK BIOTECH
Marker for detecting colon and rectum cancer as well as detection method, kit and biological chip thereof
InactiveCN101988060AEasy to storeWide detection rangeMicrobiological testing/measurementDNA/RNA fragmentationBULK ACTIVE INGREDIENTBlood plasma
The invention relates to a marker for detecting colon and rectum cancer by utilizing 86 specific ribonucleic acids stably existing in the serum / plasma of a human body, as well as a method, a relevant kit and a biological chip for detecting the marker. The method can be used in the aspects of diagnosing and differentially diagnosing the colon and rectum cancer and predicting the generation and the recurrence of the complications of diseases, evaluating the curative effect, screening the active ingredients in drugs, evaluating the drug effect and the like, and has the advantages of wide detection pedigree, high sensitivity and low detection cost, material is convenient for obtainment, samples are easy to store and the like. The method can be widely used for generally surveying the colon and rectum cancer and relevant work and improving low specificity and low sensitivity which are brought by the individual difference difficultly and are difficult to overcome by the single marker, thereby obviously enhancing the clinical detection rate of the colon and rectum cancer and becoming an effective means for early diagnosing the colon and rectum cancer.
Owner:JIANGSU MICROMEDMARK BIOTECH
Pixel circuit, driving method thereof, display panel and display device
ActiveCN107256695AAvoid differencesConsistent brightnessStatic indicating devicesPersistence of visionGray level
The present invention discloses a pixel circuit, a driving method thereof, a display panel and a display device. According to the present invention, before a light-emitting device emits light, an initialization module provides the signals at a reference signal end to the grid and the second pole of a driving transistor separately, provides a signal at a first voltage end to the first pole of the driving transistor, and is utilized to reset the grid and the first pole of the driving transistor separately, so that the difference caused by the parasitic capacitances of the grid and the first pole is avoided, and further the problem that due to the voltage jump, the threshold values are captured inconsistently, is avoided, and accordingly, the consistent brightness of a first frame after the high and low gray-scale switching can be guaranteed. Moreover, the second pole of the driving transistor is reset at the initialization stage of each frame, so that a large current flows through the driving transistor, and the threshold-voltage excursion of the driving transistor caused by the bias stress is forced to recover, and accordingly, a persistence of vision phenomenon is avoided.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD
Multilayer capacitor
ActiveUS6912115B2Increase resistanceLarge capacityFixed capacitor electrodesFixed capacitor dielectricMiniaturizationEngineering
Owner:TDK CORPARATION
Pixel circuit, driving method of pixel circuit, organic light-emitting display panel and display device
ActiveCN107452339AShorten write timeRecovery Threshold Voltage ShiftStatic indicating devicesSolid-state devicesDisplay deviceParasitic capacitance
The invention discloses a pixel circuit, a driving method of the pixel circuit, an organic light-emitting display panel and a display device. A unified public voltage signal is inputted to a first electrode of a drive transistor before a data signal is written into a control electrode of the drive transistor; the public voltage signal and a threshold voltage of the drive transistor are written into a control electrode of the drive transistor, so that relatively high current can pass through the drive transistor, threshold voltage deviation, which is caused by bias stress, of the drive transistor can be recovered, a retarding effect of the drive transistor can be improved and the occurrence of a ghosting phenomenon can be prevented; in addition, when the data signal is written into the control electrode of the drive transistor, a time of writing the data signal can be shortened, and the control electrode and the first electrode of the drive transistor can achieve jump through a unified potential, so that a difference, which is caused by stray capacitance between the control electrode and the first electrode of the drive transistor, can be prevented, the problem that threshold voltage grabbing is inconsistent due to voltage jump can be avoided and consistent brightness of the first frame after high-low grayscale switching can be guaranteed.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD +1
Catheter configured for incremental rotation
InactiveUS8172831B2Easily and accurately orientedAccurately and thoroughly treating or diagnosing a regionCatheterCardiovascular disorderCatheterMedical doctor
A catheter which allows the rotational orientation of the distal end of the catheter to be adjusted in discrete intervals as the physician rotates the proximal end of the catheter. The catheter is designed to intentionally induce whipping but to limit the amount of whipping to a desired rotational interval.
Owner:ABBOTT CARDIOVASCULAR
Production of profile
InactiveUS20070030505A1Simple wayImprove accuracyDigitally marking record carriersDigital computer detailsComputer scienceMesh grid
A method for producing a profile specifying the correspondence relationship of values in different color spaces, includes a step of acquiring a first correspondence relationship that is a correspondence relationship of a plurality of ink amounts and color values, a step of acquiring a plurality of grid points that are a plurality of grid points in a predetermined color space and for which a relative relationship between the adjacent grid points is defined, a step of acquiring a second correspondence relationship that is a correspondence relationship of the plurality of grid points and color values, a step of acquiring a third correspondence relationship that is a correspondence relationship of the plurality of grid points and ink amounts based on the first correspondence relationship and the second correspondence relationship, and a step of producing a profile specifying the third correspondence relationship.
Owner:SEIKO EPSON CORP
Individual user portraying method and system
InactiveCN105893407AEnsure synergyAvoid errorsSpecial data processing applicationsData miningLogic level
An embodiment of the present invention provides an individual user portraying method. The method comprises: based on a label rule library that comprises a label, an attribute, a derivation rule between the label and the attribute, and a logic level value of the derivation rule, detecting a behavior of a user, and applying various types of labels to the user; according to the number and / or timeliness of each type of label applied to the user within a period of time, the attribute derived from the label by using the derivation rule, and the logic strength value of the derivation rule, determining a reference value of each type of attribute derived from each type of label; comparing a reference value of one type of attribute derived from one type of label with a pre-determined threshold, and determining whether it can be determined that user attributes contain the one type of attribute, and if no, determining whether the one type of attribute can be determined together with other labels corresponding to the one type of attribute; and according to a determined user attribute, completing a user portrait. The present invention further provides an individual user portraying system. Precision of user portraits can be effectively improved.
Owner:LETV CLOUD COMPUTING CO LTD
A method and system for calibrating a proximity sensor of a mobile phone
ActiveCN102271177AImprove calibration accuracyAvoid differencesWave based measurement systemsSubstation equipmentTest efficiencyProximity sensor
The invention relates to the technical field of a mobile terminal, and discloses a method and system for calibrating a proximity sensor of a mobile phone. The method comprises the steps of fixing the mobile phone with the proximity sensor on a test fixture, arranging a panel for simulating a barrier on the test fixture, and adjusting the distance between the panel and the tested mobile phone to a specified distance; connecting the mobile phone with a PC (Personal Computer); after the reception of a calibration instruction transmitted by a PC end through the mobile phone, starting the proximity sensor to induct the panel for simulating the barrier, and inducting to read out a corresponding ADC (Airborne Digital Computer) reading at the moment; and comparing the ADC reading with a preset value, judging whether the ADC reading exceeds the preset value, and if not, storing the ADC reading. According to the invention, the problem of differences between mobile phone sensors is solved, the consistency of threshold values of the mobile phone sensors is ensured, and the calibrating precision of the proximity sensor of the mobile phone is increased. Simultaneously, the test efficiency is improved, and the production cost is reduced.
Owner:临沂高新人才教育发展集团有限公司
Guide tube for guiding endoscope or surgical tool in or into body cavity
In order to secure a path of insertion for an insertion rod 2 of an endoscope 1 and for transformation from a flexible structure to a rigid structure, a guide tube is constituted by a flexible double tube 13 having flexible inner and outer tubes 11 and 12 which are flexible in bending directions and fitted one on the other to define a hermetically closed space therebetween. Muscle members 14, each composed of a friction strip 15 and attached with a metal wire 16, are provided at predetermined angular positions between the inner and outer tubes. Dislodgements of the muscle members 14 from the respective angular positions are prevented by restraint rings 17. A suction tube 18 of a pump unit 19 is connected to the double tube 13 to evacuate a fluid from the closed space between the inner and outer tubes 11 and 12.
Owner:FUJIFILM CORP
Panchromatic objective lens of aerial camera for realizing wide angle as well as long and rear operating distance
InactiveCN102147519BIncrease the working distanceReduce the image square half angle of view ω′Optical elementsLow distortionOptical axis
The invention relates to a panchromatic objective lens of an aerial camera realizing wide angle as well as long and rear operating distance. The panchromatic objective lens adopts a reverse long-distance type structure, namely, a separation structure of a negative lens and a positive lens; a negative power lens group is used as a front group; a positive power lens group is used as a rear group; the front group consists of a first lens, a second lens and a third lens that are arranged sequentially; the rear group consists of a fourth lens, a five lens, a first pair of balsaming lens, a diaphragm, a triplet lens, a second pair of balsaming lens and a convex plane lens that are arranged sequentially; and components in each group of the front group and the rear group are sequentially arrangedalong an optical axis. The panchromatic objective lens of the aerial camera simultaneously realizes big field of view, long and rear operating distance, high resolution and low distortion.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Method of, and system for, real estate index generation
ActiveUS20100057538A1Improve efficiencyLack of liquidityFinanceFuzzy logic based systemsSystem usageComputer science
A method and system for generating a real estate property index uses real estate data including price data, property data and time of sale data that are entered into a computing apparatus. The time of sale data is manipulated to provide consecutive triple times giving two consecutive time periods (e.g., March, April, May 2007 and April, May, June 2007). A transform function, preferably a log function, is generated with two time dummy variables, and the coefficients of the two time dummy variables are extracted and added to generate a transformed growth rate. The reverse transform function, preferably an anti-log function, is generated to provide the desired untransformed growth rate.
Owner:RP DATA PTY LTD
Nucleic acid extractor
ActiveCN104450498AAvoid pollutionAvoid air pollutionBioreactor/fermenter combinationsBiological substance pretreatmentsChemistryPipette
The invention relates to the technical field of medical equipment and particularly relates to a nucleic acid extractor. The nucleic acid extractor comprises a shell, a rack, a nucleic acid extracting module, a sample bin, a reagent region, a multi-pipette module and a single-pipette module, wherein a table board is arranged on the rack; the nucleic acid extracting module, the sample bin and the reagent region are arranged on the table board; the multi-pipette module and the single-pipette module are positioned above the table board; an X arm is arranged on the rack; a multi-pipette Y arm and a single-pipette Y arm are arranged on the X arm; the multi-pipette Y arm and the single-pipette Y arm slide along the X arm; the multi-pipette module is arranged on the multi-pipette Y arm and slides along the multi-pipette Y arm; the single-pipette module is arranged on the single-pipette Y arm and slides along the single-pipette Y arm. The invention provides the nucleic acid extractor which is simple in structure, capable of preventing cross contamination and small in difference.
Owner:JIAXING QUEST LIFE SCI
Power converter
ActiveUS20110221375A1Total current dropAvoid differencesCommutation monitoringAC motor controlEngineeringHeat losses
In a power converter, a voltage command signal shifting part shifts a first duty command signal such that a first duty center value related to a voltage applied to a first set of windings is shifted downwards than an output center value of a possible duty range. The voltage command signal shifting part also shifts a second duty command signal such that a second duty center value related to a voltage applied to a second set of windings is shifted upwards than the output center value. First and second shift amounts of the first and second duty center values from the output center value are varied depending on amplitude. Accordingly, ripple current of a capacitor can be decreased, and a difference in heat loss between switching elements can be minimized.
Owner:DENSO CORP
Breast cancer detecting marker as well as detecting method, kit and biological chip thereof
InactiveCN101988061AEasy to storeWide detection rangeMicrobiological testing/measurementDNA/RNA fragmentationHuman bodyEarly breast cancer
The invention relates to a breast cancer detecting marker by utilizing 16 specific tiny ribonucleic acids steadily existing in blood serum and blood plasma of a human body as well as a detecting method, a kit and a biological chip thereof, and the detecting marker can be used in the aspects of diagnosis and differential diagnosis of breast cancer, occurrence and recurrence forecast as well as efficacy assessment of disease complications, screening and therapeutic evaluation of medicinal active ingredients and the like, and has the advantages of wide detection pedigree, high sensitivity and low detection cost, the materials are conveniently taken, the samples are easy to store and the like. The method can be widely used in related work such as breast cancer census, the defects of low specificity and low sensitivity caused by insuperable individual difference of a single marker can be improved and the clinical detectable rate of the breast cancer is notably improved, and is an effective mean of early breast cancer diagnosis.
Owner:JIANGSU MICROMEDMARK BIOTECH
Automatic performance test system and method of mobile application based on Http protocol
InactiveCN104579822AFully automatedAvoid differencesData switching networksTerminal equipmentComputer terminal
The invention discloses an automatic performance test system and method of a mobile application based on an Http protocol. The system comprises a performance test main platform and a mobile proxy module running on terminal equipment, which are connected in sequence, wherein the performance test main platform comprises a Web website, a task scheduling module and an equipment management server which are sequentially connected; the equipment management server is connected with the mobile proxy module and the mobile proxy module maintains communication with the equipment management server by an XMPP protocol and is used for issuing test tasks and obtaining performance test data. According to the test system and method disclosed by the invention, automatic evaluation work of application system performance is intelligently carried out to help the user to quickly find and position corresponding bottleneck of the application system, so that the system and method have an important practical guiding value for guaranteeing that the server can stably provide services.
Owner:SOUTH CHINA UNIV OF TECH
Source driver of display device
ActiveCN104517566AControl Offset VoltageAvoid differencesStatic indicating devicesParasitic capacitorAudio power amplifier
A source driver may include: a transmission line configured to transmit an output signal of a sample and hold circuit which stores pixel information of an organic light emitting diode (OLED) cell; an amplifier is formed a first offset voltage at an input terminal by a parasitic capacitor of the transmission line; and an offset voltage storage unit configured to store the first offset voltage outputted from the amplifier as a second offset voltage while the transmission of the output signal of the sample and hold circuit through the transmission line is turned off, and offset the first offset voltage by providing the second offset voltage to the input terminal of the amplifier when the output signal of the sample and hold circuit is transmitted through the transmission line.
Owner:SILICON WORKS CO LTD
Communication method and device of long connection of network
The invention provides a communication method and device of long connection of the network, suitable for the technical field of Internet. The method comprises that a connection request of a client is received, and the connection request includes the present connection gateway IP of the client; an access address list matching the present connection gateway IP is configured for the client, the access address list comprises at least one group of access addresses, and each group of access addresses comprises an access IP and an access port corresponding to the access IP; and the access address list is issued to the client, so that the client can establish long connection with the server according to the access address list. The method and device can effectively overcome the problem that gateway strategies of different service providers or the same service provider in different regions are different, and ensures the stability of the long connection which is established between the client and the server via the access address list.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Pneumatic Tire
ActiveUS20090266459A1Rigidity of block can be increasedAvoid deformationTyre tread bands/patternsRolling resistance optimizationHigh resistanceRolling resistance
An object of the present invention is to provide a pneumatic tire having low rolling resistance and higher resistance against irregular wear. To achieve the above object, a pneumatic tire includes a tread portion comprising a plurality of block arrays each of which is constituted of a plurality of blocks that are partitioned by a plurality of main grooves extending in a circumferential direction of the tire and a plurality of lateral grooves crossing the main grooves, wherein at least one of the block arrays is provided with a thin rib that continuously extends in the circumferential direction of the tire in a central area of the block array as viewed in a width direction of the tire and is partitioned by two sipes extending in the circumferential direction of the tire, the depth of the sipes extending in the circumferential direction of the tire is 0.7 times or less of the depth of the lateral grooves.
Owner:TOYO TIRE & RUBBER CO LTD
Semiconductor device
ActiveUS20080290407A1Small footprintHigh currentTransistorSolid-state devicesSmall footprintSemiconductor device
A semiconductor device has a semiconductor substrate, an insulating film, a semiconductor element and a resistance element. The semiconductor substrate has a first trench. The insulating film covers an inner surface of the first trench. The semiconductor element has an electrode. The resistance element is electrically connected to the electrode to form a resistance to a current flowing through the electrode, and is arranged in the first trench with the insulating film therebetween. Thereby, the semiconductor device can have a resistance element that has a small footprint and can pass a large current with high reliability.
Owner:MITSUBISHI ELECTRIC CORP
Commutation torque ripple restraining method and system for brushless DC (Direct Current) motor driving system
InactiveCN103501146AVerify validityAvoid differencesElectronic commutation motor controlVector control systemsMotor driveCommutation torque ripple
The invention discloses a commutation torque ripple restraining method and a commutation torque ripple restraining system for a brushless DC (Direct Current) motor driving system. The method comprises the following steps: (1) when T*-T is more than AT, carrying out PWM (Pulse Width Modulation) on a switching tube of an off phase, enabling a switching-in phase to be constantly communicated with a non-conducting phase, enabling the PWM duty cycle dhigh of the off switch to meet the condition and ensuring that a current rise speed of the switching-in phase is equal to a current fall speed of the off phase so as to restrain generation of a commutation torque ripple; and (2) when T-T* is more than delta T, carrying out PWM on switching tubes of the switching-in phase and the non-conducting phase, still switching off the off phase and enabling the PWM duty cycle dlow of the switching tubes of the switching-in phase and the non-conducting phase of the off phase to meet the condition. The method uses a torque ripple deviation as a feedback quantity and is matched with PWM to implement torque ripple restraint, has an excellent effect and is easy to implement.
Owner:CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
Calibration method and system for optical sensor of mobile phone
ActiveCN102322946AImprove calibration accuracyEnsure consistencyPhotometryProduction lineTest efficiency
The invention discloses a calibration method and system for the optical sensor of a mobile phone. The system comprises a power supply, a computer with a test program, a mobile phone with an optical sensor and a test fixture for fixing the mobile phone, wherein the test fixture is provided with a shielding cover for containing the mobile phone and forming a sealed space; and a surface light source device is arranged in the shielding cover. Because the system is used on a mobile phone production line, an environment with fixed light intensity is provided, and the optical sensor of each mobile phone is calibrated on line; then, a calibrated compensation value is written in each mobile phone; thus, consistency between the mobile phones can be guaranteed to the maximum degree; difference between mobile phone sensors can be solved; the calibration precision of the optical sensor is improved; meanwhile, test efficiency is improved; and production cost is lowered.
Owner:HUIZHOU TCL MOBILE COMM CO LTD
Control system for multiphase rotary machines
ActiveUS20090160377A1Reduce percentageReduced control accuracySynchronous motors startersVector control systemsRotary machineVoltage
A control system is designed to use a plurality of voltage vectors expressing a switching mode for a switching circuit to thereby control a difference between a current actually flowing through a multiphase rotary machine and a command current value therefor within an allowable range. The plurality of voltage vectors include a zero vector that allows line-to-line voltages in the multiphase rotary machine to be all zero, and a plurality of non-zero vectors that allow at least one of line-to-line voltage in the multiphase rotary machine to be nonzero. A drive unit is configured to switch only one phase of the switching element for each shift of the switching mode to thereby shift, in accordance with a preset switching pattern, the switching mode from a specified one of the plurality of non-zero vectors to the specified one of the plurality of non-zero vectors via the zero vector.
Owner:DENSO CORP
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