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Method for rapidly evaluating parallelism degree of plane relative to reference plane
PendingCN110285781ASimplified Assessment FormReduce the number of iterationsMeasurement devicesManufacturing computing systemsMeasurement pointEngineering
The invention belongs to the field of precision metering and computer application and relates to a rapid and simple method for rapidly evaluating the parallelism degree of a plane relative to a reference plane. The method comprises the following steps that: step 1, a measuring point set is acquired, a state element set, a feature row vector set and a boundary element set are constructed according to the measuring point set, and the position of a gauge is determined according to the measuring point set; step 2, two key points are acquired; step 3, an analysis matrix is constructed with the key point set; step 4, rank analysis is carried out, whether optimization is continued or not is determined, and an optimization strategy is determined; step 5, the analysis matrix and an analysis column vector are solved, so that an optimization direction is obtained; step 6, a new key point is solved, a measurement point coordinate set and the position of the gauge are updated, and the method enters the next circulation step; step 7, the flatness of the reference plane is calculated; step 8, flatness error t is compared with a given tolerance value TD, and whether the flatness is qualified or not is judged; and step 9, if the flatness is qualified, the parallelism error value of a plane to be measured is calculated; and step 10, parallelism error t' is compared with a given tolerance value T'D, and whether parallelism is qualified or not is judged.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Stable, fast and simple flatness error evaluation method
InactiveCN108286957AThere is no initial value sensitivity problemSimplified Assessment FormMeasurement devicesComplex mathematical operationsColumn vectorSerial code
The invention belongs to the field of precision measurement and computer application, and relates to a stable, fast and simple flatness error evaluation method comprising a step 1 of acquiring a measured point set, and establishing a feature row vector set, a boundary element set and a state element set according to the measured point set; a step 2 of taking a measured point corresponding to the minimum value of the state element set as a key point, and adding the serial number of the measured point to the key point set; a step 3 of establishing an analysis matrix and an analysis column vectoraccording to the key point set; a step 4 of performing rank analysis on the analysis matrix and an augmented analysis matrix to determine whether to continue optimizing, eliminate the key point or terminate a program and obtaining an optimal value; a step 5 of solving the analysis matrix and the analysis column vector to obtain an optimizing direction; a step 6 of solving a new key point, updating a measured point set and going to the next loop; and a step 7 of terminating the program and obtaining the optimal value.
Owner:唐哲敏
Daylight lamp
InactiveCN106195911AHigh precisionMask interferenceMechanical apparatusLight guides detailsLight sensingLight beam
The invention relates to the field of lighting equipment, in particular to a daylight lamp which is small and exquisite in structure, convenient to use, high in day lighting efficiency and long in service life of a light sensor, and can conduct and use daylight to illuminate. The daylight lamp comprises the following parts: a day lighting barrel, a condensing lens, a scattering lens, an inner shaft, an outer support, an outer shaft, a light beam, a steering control system and a lamp body, wherein the condensing lens and the scattering lens are placed in the day lighting barrel successively; the inner shaft is arranged outside the day lighting barrel and is connected to the outer support through an inner motor; the outer shaft is arranged outside the outer support and is mounted at a day lighting site through an outer motor; the light beam is further arranged in the day lighting barrel and comprises a central day lighting optical fiber and surrounding light sensing optical fibers; the other ends of the light sensing optical fibers are connected to the steering control system; the other end of the day lighting optical fiber is connected to the lamp body; and the lamp body can be turned on or turned off independently.
Owner:唐哲敏
Quick, stable and simple cylindricity error evaluation method
InactiveCN108267106AThere is no initial value sensitivity problemSimplified Assessment FormMeasurement devicesSequence analysisSimple mode
The invention belongs to the precision metering and computer application field, and relates to a quick, stable and simple-mode cylindricity error evaluation method. The quick, stable and simple-mode cylindricity error evaluation method includes the following steps: 1) acquiring a testing point set, according to the testing point set, establishing a characteristic row vector set, a boundary elementset and a state element set; 2) taking the testing point corresponding to the minimum of the state element set as the key point, and adding the sequence number of the key point into a key point set;3) according to the key point set, establishing an analysis matrix and an analysis row vector; 4) performing sequence analysis on the analysis matrix and an augmentation analysis matrix so as to determine whether to continue searching optimization, to reject the key point or to terminate the program to obtain the optimal value; 5) solving the analysis matrix and the analysis row vector to obtain the optimization searching direction; 6) tracing the problem to solve a new key point, updating a testing point state set, and entering the next time of circulation; and 7) terminating the program andobtaining the optimal value.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Monte Carlo-based straightness measurement method under minimum entity requirement
InactiveCN113483720AReduce the amount of variationReduce computationMeasurement devicesShape changeStructural engineering
The invention belongs to the field of precision measurement and computer application, and relates to an optimal measurement point number reasoning method for rapidly and stably marking linearity tolerance application minimum entity requirement (LMR) during cylinder part detection, which is realized by the following steps of: 1, obtaining a size error morphology change function under a specific processing condition; 2, setting N (N is greater than or equal to 3) measuring points on the cross section of the cylinder part, wherein a total of I cross sections exits, and analyzing the size error compensation application LMR straightness tolerance to obtain a shape change function of an actual part; 3, obtaining a simulation function of the measuring point according to the morphology change function of the part; 4, carrying out LMR straightness error evaluation to obtain the variable quantity of the average value of the limit equivalent dimensions; 5, if the variation is smaller than 0.001 mm, executing the step 6, otherwise, returning to the step 2; and 6, when the measurement error is less than or equal to the measurement allowance, outputting the number of the finally obtained measurement sections and the number of measurement points, otherwise, increasing the number of the sections and returning to the step 2.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Quick, stable and simple roundness error evaluation method
InactiveCN108168494ASimplified Assessment FormSmall roundness errorMeasurement devicesColumn vectorRoundness error
The invention belongs to the precision measurement and computer application field and relates to a stable, quick and simple roundness error evaluation method. The method comprises the following stepsthat: step 1, a test point set is obtained, and a feature row vector set, a boundary element set and a state element set are established according to the test point set; step 2, a test point corresponding to the minimum value of the state element set is selected as a key point, and the test point serial number of the key point is added to a key point set; step 3, an analysis matrix and an analysiscolumn vector are established according to the key point set; step 4, rank analysis is performed on the analysis matrix and an augmented analysis matrix, so that continuing optimization, eliminatingthe key point, or terminating a program is determined, and an optimal value is obtained; step 5, the analysis matrix and the analysis column vector are solved, so that an optimization direction is obtained; step 6, a new key point is solved with a catch-up question, and a test point state set is updated, and the method enters a next cycle; and step 7, the program is terminated, and an optimal value is obtained.
Owner:唐哲敏
Straightness adaptive measurement method based on Monte Carlo method
PendingCN114248150AReduce the amount of variationReduce computationMeasurement/indication equipmentsShape changeEngineering
The invention belongs to the field of precision measurement and computer application, and relates to an optimal measurement spacing reasoning method for rapidly and stably marking straightness tolerance in any given direction during detection of a cylinder part, which is realized by the following steps of: 1, obtaining a size error morphology change function under a specific processing condition; 2, assuming that K (K is greater than or equal to 3) measuring points exist on the cross section of the cylinder part and I cross sections exist in total, analyzing the size error to compensate the straightness tolerance, and increasing the allowable value of the straightness tolerance so as to obtain a shape change function of an actual part; 3, obtaining a simulation function of the measuring point according to the morphology change function of the part; 4, performing error evaluation to obtain the variation of the average value of the limit equivalent dimensions; 5, if the variation is smaller than 0.001 mm, executing the step 6, otherwise, returning to the step 2; and 6, when the measurement error is greater than or equal to the measurement allowance, outputting the finally obtained optimal cross section number, otherwise, reducing the cross section number and returning to the step 2.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Intelligent CMM probe system configuration method
PendingCN113916115AEasy to promoteApplicable useUsing electrical meansPoint coordinate measurementsAnnotationEngineering
The invention belongs to the field of product precision measurement and computer application, and relates to an intelligent CMM probe system configuration method which can be used for part error measurement in CMM equipment and provides guidance for intelligent measurement. The method is realized by the following steps: step 1, acquiring annotation information in a three-dimensional model; step 2, summarizing the models of common measuring heads and measuring seats; step 3, constructing a body of the part information; step 4, constructing an ontology of the detection system; step 5, constructing attributes; step 6, constructing an intelligent configuration rule of the CMM detection system; and step 7, automatically generating a measuring head and a measuring seat of the detection system.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Rapid, stable and simple square groove body external effect width evaluation method
InactiveCN108121876ASimplified Assessment FormReduce computationGeometric CADSpecial data processing applicationsCrucial pointSimple mode
The invention belongs to the field of precision metering and computer application, and particularly relates to a stable and rapid square groove body external effect width evaluation method with the simple mode. The method comprises the following steps of 1, obtaining a measuring point set, and building a feature row vector set, a boundary element set and a status element set according to the measuring point set; 2, obtaining a measuring point corresponding to the minimum value of the status element set as a key point, and adding a measuring point serial number into the key point set; 3, building an analysis matrix and an analysis column vector according to the key point set; 4, performing rank analysis on the analysis matrix and an augmentation analysis matrix so as to determine continuousoptimizing, key point removal and application termination and obtain the optimal value; 5, solving the analysis matrix and the analysis column vector to obtain the optimizing direction; 6, solving anovel key point on the basis of a pursuit problem, updating the measuring point status set, and performing a next circulation; 7, terminating an application and obtaining the optimal value.
Owner:唐哲敏
Evaluation method for radial circle run-out error of optical axis
InactiveCN113483660AThere is no initial value sensitivity problemSimplified Assessment FormUsing optical meansOptical axisEngineering
The invention belongs to the field of precision metering and computer application, and particularly relates to a stable, rapid and simple-form evaluation method for a radial circle run-out error of an optical axis. The method comprises the following steps of: 1, acquiring an initial measuring point set of a measured section; 2, acquiring a pre-positioned initial measuring point set; 3, establishing a feature row vector set and a state element set; 4, establishing an analysis matrix and an analysis column vector; 5, carrying out rank analysis; 6, solving an analysis matrix and an analysis column vector; 7, updating the coordinates of the circle center and the state element set of the measuring points of the measured section; 8, updating a measuring point set of a reference section; 9, establishing a feature row vector set and a state element set; 10, adding the serial numbers of the measuring points of the reference section into a key point set; 11, establishing an analysis matrix and an analysis column vector; 12, carrying out rank analysis; 13, solving an analysis matrix and an analysis column vector; 14, updating the measuring point set and the state element set; and 15, carrying out qualification judgment.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Error measurement workpiece perpendicularity rapid evaluation method based on single reference plane
PendingCN113932754AThere is no problem of errorReduce complexityMeasurement devicesMathematical modelControl engineering
The invention belongs to the field of precision metrology and computer application, and relates to a method for evaluating a hole shaft part by combining a virtual gauge with measurement data in a mathematical model form, in particular to a method for evaluating the perpendicularity of an L-shaped error measurement workpiece based on a single reference plane, and the method comprises the following steps of: 1, acquiring a reference plane measurement point set and a measured element point set, and establishing a feature row vector set and a state element set; 2, acquiring an initial key sequence number set; 3, establishing an analysis matrix and an analysis column vector; 4, carrying out rank analysis; 5, determining an optimizing direction; 6, solving a new key point, and updating the coordinates of the measuring point set; 7, judging whether the reference element evaluation meets a qualified condition or not; 8, updating the measured element point set; 9, updating a real-time state element set; 10, updating the key sequence number set of the measured elements; 11, establishing an analysis matrix and an analysis column vector; 12, carrying out rank analysis; 13, determining an optimizing direction; 14, solving a new key point, and updating the coordinates of the measurement point set; and 15, carrying out qualification judgment.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Method for quickly evaluating location degree of single-datum-hole-based shaft part
InactiveCN110619139ASimplified Assessment FormReduce the number of iterationsSpecial data processing applicationsMeasurement pointPosition error
The invention belongs to the field of precision measurement and computer application, relates to a mode of combining a virtual gauge with measurement data in the form of a mathematical model to evaluate a hole shaft part, and particularly relates to a method for quickly evaluating location degree based on single-datum. The method comprises the following steps: 1, acquiring a benchmark section measurement point set, and establishing a characteristic row vector set and a state element set; 2, adding into a key point set; 3, establishing an analysis matrix and an analysis column vector; 4, performing rank analysis; 5, obtaining an optimization direction; 6, solving a new key point, and updating the states of the reference segment point set and the measured element point set; 7, judging whether the reference element evaluation is qualified or not; 8, pre-positioning the measured point set; and 9, updating the real-time state set of the measured elements; 10, taking key points, and adding serial numbers of the key points into the key point set; 11, establishing an analysis matrix and an analysis column vector; 12, performing rank analysis on the analysis matrix and the augmented analysis matrix; 13, determining an optimization direction; 14, obtaining new key points, and updating the point set state; and 15, calculating a position error, and judging the qualification.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Coaxiality error detection and measurement method based on error source
InactiveCN113483719AReduce the amount of variationReduce computationMeasurement devicesEngineeringComputational physics
The invention relates to a coaxiality error detection and measurement method based on an error source. The invention belongs to the field of precision measurement and computer application, and relates to an optimal measurement point number reasoning method for rapidly and stably marking coaxiality tolerance during cylinder part detection, which is realized by the following steps of: 1, obtaining a size error morphology change function under a specific processing condition; 2, setting H (H is greater than or equal to 3) measuring points on the cross sections of the cylinder part, wherein a total of I cross sections exists, analyzing a size error to compensate the coaxiality tolerance, and obtaining an allowable value increase of the coaxiality tolerance, so as to obtain a shape change function of an actual part; 3, obtaining a simulation function of the measuring point according to the morphology change function of the part; 4, evaluating the coaxiality error to obtain the variable quantity of the average value of the limit equivalent dimensions; 5, if the variation is smaller than 0.001 mm, executing the step 6, otherwise, returning to the step 2; and 6, when the measurement error is less than or equal to the measurement allowance, outputting the number of the finally obtained measurement sections and the number of measurement points, otherwise, increasing the number of the sections and returning to the step 2.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Coaxiality evaluation method based on principles of double tolerances
InactiveCN108680129ASimplified Assessment FormMaximum effective sizeMeasurement devicesGeometric errorCrucial point
The invention belongs to the field of precision metrology and computer application, in particular to a stable, rapid and simple-form coaxiality evaluation method based on principles of double tolerances. The coaxiality evaluation method comprises the following steps: step 1, constructing a plurality of parameter matrices by measuring points of a to-be-measured part to describe geometric errors ofthe to-be-measured part; step 1.1, determining whether to analyze a reference section or a measured section; step 1.2, combining parameter matrixes of the reference section and the measured section; step 2, adding a key point; step 3, constructing an analysis matrix through a key point set; step 4, analyzing the analysis matrix, deciding whether optimization continues, and deciding optimization strategies; step 5, calculating an optimization direction; step 6, deciding whether a new key point is generated, generating a new key point if necessary, and updating part of the parameter matrixes, and step 7, calculating and judging whether coaxiality of the to-be-measured part based on principles of double tolerances is qualified.
Owner:GUILIN UNIV OF ELECTRONIC TECH
A coaxiality assessment method for the dual maximum physical requirements of bore shaft parts
InactiveCN109063399ASimplified Assessment FormReduce computationGeometric CADMeasurement devicesGeometric errorPrecision metrology
The invention belongs to the field of precision metrology and computer application, in particular to a stable, fast and simple coaxiality evaluation method based on the principle of double tolerance,which can evaluate the case that the reference is a hole and the measured element is an axis. The invention comprises the following steps: 1, a plurality of parameter matrices are constructed by measuring points of a part to be measured to describe the geometric error of the part to be measured; 1.1, whether to analyze a reference section or a measured section is determined; Step 1.2, the parameter matrix of the reference section and the measured section are fused; 2, a key point is added; 3, an analysis matrix by using a set of key point is constructed; 4, the analysis matrix is analyzed to deicde whether to continue the optimization, and decide the optimization strategy; 5, an optimization direction is calculated; 6, whether to generate a new key point is decided to generate a new key point if necessary, and update part of the parameter matrix; 7, whether the coaxiality of the part to be tested is qualified based on the principle of double tolerance is calculated and judged.
Owner:唐哲敏
Fast, stable and simple three-coordinate measuring machine needle head diameter reasoning method
PendingCN113932749AEasy to promoteMethod stableMeasurement devicesComputational physicsSinusoidal waveform
The invention belongs to the field of precision measurement and computer application, and relates to a rapid, stable and simple three-coordinate measuring machine probe head diameter reasoning method, which is realized by the following steps of: 1, acquiring an amplitude h and a wavelength l of a sinusoidal waveform; 2, estimating a stability coefficient ki value and a parameter k2 of the diameter DT1, and solving h1' and h1; 3, calculating the phase of a contact point and the x-axis distance of the contact point; 4, solving the diameter DT1, judging whether the diameter DT1 is appropriate or not, outputting the diameter if the diameter DT1 is appropriate, and otherwise, adopting a simplified algorithm in the next step; 5, simplifying an inference algorithm, assuming n contact points in total, solving k'j and hj for the j-th contact point, then solving a contact point phase and eksl, and then solving DTj until j=n; 6 optimizing the simplified algorithm, assuming that the contact points are very close to the peak top and the contact point phase is pi, solving k'j, hj and eksl, and 7 solving DT and outputting the diameter of the needle head according to an optimization formula.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Fast, stable and simple maximum inscribed circle diameter assessment method
InactiveCN108562259AThere is no initial value sensitivity problemSimplified Assessment FormMeasurement devicesAlgorithmColumn vector
The invention belongs to the field of precision measurement and computer application, and particularly relates to a stable, fast and simple-form maximum inscribed circle diameter assessment method comprising the following steps that step 1: a measuring point set is acquired, and a feature row vector set, a boundary element set and a state element set are established according to the measuring point set; step 2: the measuring point corresponding to the minimum value of the state element set is taken as the key point and the measuring point number is added to the key point set; step 3: an analysis matrix and analysis column vectors are established according to the key point set; step 4: rank analysis is performed on the analysis matrix and an augmented analysis matrix so as to determine whether to continue optimization, eliminate the key point or terminate the program and obtain the optimal value; step 5: the analysis matrix and the analysis column vectors are solved so as to obtain theoptimization direction; step 6: a new key point is solved by the pursuit problem, the measuring point state set is updated and the process enters the next cycle; and step 7: the program is terminatedand the optimal value is obtained.
Owner:唐哲敏
Fast, stable and simple maximum inscribed cylinder diameter assessment method
InactiveCN108562258AThere is no initial value sensitivity problemSimplified Assessment FormMeasurement devicesColumn vectorRow vector
The invention belongs to the field of precision measurement and computer application, and particularly relates to a stable, fast and simple-form maximum inscribed cylinder diameter assessment method comprising the following steps that step 1: a measuring point set is acquired, and a feature row vector set, a boundary element set and a state element set are established according to the measuring point set; step 2: the measuring point corresponding to the minimum value of the state element set is taken as the key point and the measuring point number is added to the key point set; step 3: an analysis matrix and analysis column vectors are established according to the key point set; step 4: rank analysis is performed on the analysis matrix and an augmented analysis matrix so as to determine whether to continue optimization, eliminate the key point or terminate the program and obtain the optimal value; step 5: the analysis matrix and the analysis column vectors are solved so as to obtain the optimization direction; step 6: a new key point is solved by the pursuit problem, the measuring point state set is updated and the process enters the next cycle; and step 7: the program is terminated and the optimal value is obtained.
Owner:唐哲敏
Stable, quick, and simple-mode method for evaluating minimum circumscribed cylinder diameter
InactiveCN108253917AThere is no initial value sensitivity problemSimplified Assessment FormMeasurement devicesAlgorithmSimple mode
The invention, which belongs to the field of precision metering and computer application, relates to a stable, quick, and simple-mode method for evaluating a minimum circumscribed cylinder diameter. The method comprises: step one, a set of measuring points is obtained and a feature line vector set, a boundary element set and a state element set are established based on the set of measuring points;step two, a measuring point corresponding to a maximum value of the state element set is selected as a key point and a measuring point serial number of the measuring point is added into a key point set; step three, according to the key point set, an analysis matrix and an analysis column vector are established; step four, a rank analysis is carried out on the analysis matrix and an augmentation analysis matrix to determine whether to carry out optimizing continuously, reject the key point or terminate the program, and an optimal value is obtained; step five, the analysis matrix and the analysis column vector are calculated to obtain an optimizing direction; step six, a problem is solved, a new key point is calculated, a measuring point state set is updated, and next circulation is carriedout; and step seven, the program is terminated and an optimal value is obtained.
Owner:唐哲敏
Stable, quick, and simple-mode method for evaluating minimum excircle diameter
InactiveCN108253918AThere is no initial value sensitivity problemSimplified Assessment FormMeasurement devicesAlgorithmSimple mode
The invention, which belongs to the field of precision metering and computer application, relates to a stable, quick, and simple-mode method for evaluating a minimum excircle diameter. The method comprises: step one, a set of measuring points is obtained and a feature line vector set, a boundary element set and a state element set are established based on the set of measuring points; step two, a measuring point corresponding to a maximum value of the state element set is selected as a key point and a measuring point serial number of the measuring point is added into a key point set; step three, according to the key point set, an analysis matrix and an analysis column vector are established; step four, a rank analysis is carried out on the analysis matrix and an augmentation analysis matrixto determine whether to carry out optimizing continuously, reject the key point or terminate the program, and an optimal value is obtained; step five, the analysis matrix and the analysis column vector are calculated to obtain an optimizing direction; step six, a problem is solved, a new key point is calculated, a measuring point state set is updated, and next circulation is carried out; and stepseven, the program is terminated and an optimal value is obtained.
Owner:唐哲敏
Hybrid opto-electronic energy lamp system
InactiveCN106247277AReduce usageHigh utilization of sunlightLighting applicationsSemiconductor devices for light sourcesDaylightEngineering
The invention relates to the field of lighting equipment, in particular to a hybrid opto-electronic energy lamp system which is small and exquisite in structure, convenient to use, stable in brightness and high in sunlight utilization ratio. The hybrid opto-electronic energy lamp system is composed of a plurality of daylighting and sunlight tracking modules, a plurality of LED modules and a light dispatching system. The light dispatching system makes the tail ends of a plurality of lighting optical fibers and the tail ends of a plurality of LED optical fibers align one faces of a plurality of condensing lenses or laterally face one faces of a plurality of semi-permeable mirrors. The other face of each condensing lens directly faces one terminal optical fiber. Each face of each semi-permeable mirror laterally faces one terminal optical fiber. One of the terminal optical fibers is connected with an opto-electronic storage device, and the remaining terminal optical fibers are connected with lamps correspondingly. The opto-electronic storage device supplies electric energy to the light dispatching system directly through an electric storage wire.
Owner:唐哲敏
Ontology-based CMM probe diameter intelligent reasoning method
PendingCN114386181AApplicable useWith industrial possibilitiesGeometric CADMeasurement devicesAlgorithmJava
The invention belongs to the field of product precision measurement and computer application, and relates to an intelligent reasoning method for the probe diameter of an intelligent three-coordinate measuring machine (CMM), which can be used for carrying out part error measurement in CMM equipment and providing guidance for intelligent measurement. The method is realized by the following steps: step 1, acquiring annotation information in a three-dimensional model, and constructing an ontology model; 2, constructing data attributes of the fluctuation frequency, the wave height and the probe diameter of each revolution; step 3, constructing a relationship between the fluctuation frequency and the wave height of each revolution and the diameter of the probe and the diameter of the probe; 4, constructing an inference rule of the diameter of the probe; and 5, developing an intelligent reasoning program of the probe diameter by using a Java language, wherein the intelligent reasoning program is used for automatically generating the probe diameter.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Straightness evaluation method in any direction based on digitized gauge
InactiveCN110595424AControl motion displacementSimplified Assessment FormMeasurement devicesComplex mathematical operationsMathematical modelMeasurement point
The invention belongs to the field of precision metering and computer application, parts are evaluated by using a physical gauge in the form of a mathematical model, and the invention specifically relates to a digitized straightness evaluation method in any direction, which is fast, stable and simple. The method comprises the steps of: 1: obtaining a measurement point set, and establishing a boundary element set and a state element set according to the measurement point set; 2: establishing a feature row vector set according to the measurement point set and a corresponding normal vector; 3: adding a key point; 4: establishing an analysis matrix and an analysis column vector; 5: performing rank analysis on the analysis matrix and an augmented analysis matrix to determine whether to continueto optimize, remove the key point, or terminate the program; 6: calculating an optimization direction; 7: solving a new key point by a following problem, performing optimization step calculation, performing update according to the formula in the step 1 to enter the next cycle, or entering the next cycle according to the step 4; and 8: terminating the program and obtaining an optimal value.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Method for rapidly evaluating perpendicularity of axle hole part based on single datum plane
InactiveCN110296677ASimplified Assessment FormReduce the number of iterationsMeasurement devicesComplex mathematical operationsFeature evaluationAlgorithm
The invention belongs to the field of precision metrology and computer application, is a method for evaluating an axle hole part by combining the virtual gauge with the measuring data in the form of the mathematical model, and specifically relates to a method for rapidly evaluating the perpendicularity of the axle hole part based on a single datum plane. The method comprises the steps of: 1, acquiring a measuring point set of the datum plane and a point set of a measured feature, and building a characteristic line vector set and a status element set; 2, acquiring an initial key sequence numberset; 3, building an analysis matrix and an analysis column vector; 4, performing rank analysis; 5, determining an optimizing direction; 6, solving a new key point and updating the coordinate of the measuring point set; 7, judging whether the datum feature evaluation satisfies the acceptance condition or not; 8, pre-locating the point set of the measured feature; 9, updating a real-time status element set; 10, updating a key sequence number set of the measured feature; 11, building the analysis matrix and the analysis column vector; 12, performing the rank analysis; 13, determining the optimizing direction; 14, solving the new key point and updating the coordinate of the measuring point set; and 15, performing qualification judgment.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Digital evaluation method for public reference radial total run-out error
InactiveCN112212758AThere is no initial value sensitivity problemSimplified Assessment FormMechanical measuring arrangementsData miningDigitization
The invention belongs to the field of precision measurement and computer application, and relates to a rapid, stable, simple-form and digital evaluation method for a public reference radial total run-out error. The method comprises the following steps: acquiring an initial measuring point set of a measured section and a reference section; carrying out pre-positioning to obtain a pre-positioned reference section measuring point set, a measured section measuring point set and a reference section cross section initial circle center coordinate set; constructing a parameter matrix according to eachsection measuring point of the reference section, constructing an analysis matrix by the key point set for analysis, and determining an optimization strategy; updating a reference section cross section circle center coordinate set according to an optimization result; constructing a parameter matrix according to the reference section circle center coordinate set, constructing an analysis matrix according to the key point set for analysis, and determining an optimization strategy; updating measurement point sets and related parameters of the reference section and the measured section accordingto an optimization result; judging whether the reference section and the measured section meet the design size requirement or not; and calculating and judging whether the radial total run-out error ofthe measured section of the measured shaft is qualified or not.
Owner:GUILIN UNIV OF ELECTRONIC TECH
Fast, stable and simple method for evaluating width of square key which works in vitro
InactiveCN108287949ASimplified Assessment FormReduce computationGeometric CADDesign optimisation/simulationIn vitroPoint sequence
The invention belongs to the field of precision metering and computer application, and relates to a stable and fast method with a simple form for evaluating the width of a square key which works in vitro. The method comprises the steps of step 1, acquiring a measuring point set, and establishing a characteristic row vector set, a boundary element set and a state element set according to the measuring point set; step 2, taking measuring points corresponding to a minimum value of the state element set as a key point, and adding a measuring point sequence number to a key point set; step 3, establishing an analysis matrix according to the key point set and analyzing row vectors; step 4, performing rank analysis on the analysis matrix and an augmented analysis matrix to determine whether to continue to seek optimization, eliminate the key point or terminate a program and obtain an optimal value; step 5, solving the analysis matrix and analyzing the row vectors to obtain an optimization seeking direction; step 6, solving a new key point by following a problem, updating the measuring state set, and entering the next cycle; step 7, terminating the program, and obtaining the optimal value.
Owner:唐哲敏
Method for evaluating straightness in given plane based on digital gauge
InactiveCN110457752ASimplified Assessment FormSmall straightness errorSpecial data processing applicationsPoint setColumn vector
The invention belongs to the field of precision metering and computer application and discloses a method for evaluating a part by combining an entity gauge with measurement data in a mathematical model form, and relates to a quick, stable, simple-form and digital method for evaluating straightness in a given plane, which comprises the following steps of: step 1, acquiring a measurement point set,and establishing a boundary element set and a state element set according to the measurement point set; step 2, establishing a feature row vector set according to the measuring point set and the corresponding normal vector; step 3, adding a key point; step 4, establishing an analysis matrix and an analysis column vector; step 5, rank analysis is performed on the analysis matrix and the augmented analysis matrix so as to determine whether optimization continues to be performed, key points are eliminated or a program is terminated; step 6, calculating an optimization direction; step 7, solving anew key point by using a chasing problem, performing optimization step calculation, updating according to the formula in the step 1, and entering the next cycle; or entering the next cycle accordingto the step 4; and step 8, terminating the program and obtaining an optimal value.
Owner:GUILIN UNIV OF ELECTRONIC TECH
A Fast, Stable and Simple Evaluation Method of Cylindricity Error
InactiveCN108267106BThere is no initial value sensitivity problemSimplified Assessment FormMeasurement devicesSequence analysisGenome sequence analysis
Owner:GUILIN UNIV OF ELECTRONIC TECH
A coaxiality evaluation method for the dual minimum physical requirements of bore shaft parts
InactiveCN109214063AReduce computationSimplified Assessment FormGeometric CADMeasurement devicesGeometric errorPrecision metrology
The invention belongs to the field of precision metrology and computer application, in particular to a method for evaluating coaxiality required by double minimum entity of stable, fast and simple hole shaft parts, which can evaluate the condition that the standard is the shaft and the measured element is the hole. The invention comprises the following steps: step 1, a plurality of parameter matrices are constructed by measuring points of a part to be measured to describe the geometric error of the part to be measured; 1.1, determining whether to analyze a reference axis or a measured hole; Step 1.2, fusing the parameter matrix of the reference axis and the measured hole; 2, adding a key point; 3, constructing an analysis matrix by using a set of key point; 4, analyzing the analysis matrix, deciding whether to continue the optimization, and deciding the optimization strategy; 5, calculating an optimization direction; Step 6, deciding whether to generate a new key point, generating a new key point if necessary, and updating part of the parameter matrix; Step 7, calculating and judging whether the coaxiality of the part to be tested based on the principle of double minimum entity isqualified or not.
Owner:唐哲敏
Fast simple and stable method for evaluating coaxiality based on double tolerance principle
InactiveCN108592852ASimplified Assessment FormReduce computationMeasurement devicesGeometric errorAlgorithm
The invention belongs to the field of precision metrology and computer application, and particularly relates to a stable, fast and simple-form coaxiality evaluation method based on a double toleranceprinciple. The method comprises the following steps that step 1, measuring points of to-be-measured parts are used to construct a plurality of parameter matrixes to describe geometric errors of the to-be-measured parts; wherein in step 1.1, it is determined whether to analyze a reference section or a measured section; in step 1.2, parameter matrixes of the reference section and measured segment are merged; step 2, a key point is added; step 3, an analysis matrix is constructed by using a key point set; step 4, the analysis matrix is analyzed to determine whether or not to continue to optimizeand determine an optimization strategy; step 5, an optimization direction is calculated; step 6, it is determined whether or not a new key point is generated, if necessary, a new key point is generated and partial parameter matrixes are updated; and step 7, it is calculated and determined whether or not the coaxiality, based on the double tolerance principle, of the to-be-measured parts is qualified.
Owner:GUILIN UNIV OF ELECTRONIC TECH
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