40 results about "Harmonic spectrum" patented technology

The invention relates to the technical field of gas detection, and provides a doped gas concentration detection method and system based on a gas analyzer. The method comprises the following steps: constructing a standard spectrum database under the same pressure and temperature as a to-be-measured site; the method comprises the following steps: introducing sample gas into an optical absorption cell, carrying out wavelength scanning through a tunable diode laser in a plurality of adjacent absorption spectral line intervals containing target gas and interference gas, superposing a high-frequency sinusoidal modulation signal on a driving current, and synchronously detecting a second harmonic component of transmission laser to generate an actual measurement spectrum; fitting the actually measured spectrum with a synthetic spectrum generated on the basis of a standard spectrum database, and outputting a target gas concentration ratio as a detection result when a residual error meets a threshold value, so as to solve the technical problem that the detection precision is reduced due to spectrum overlapping caused by interference gas, and achieve the purpose that the detection precision is reduced by constructing the standard spectrum database and second harmonic spectrum fitting analysis. And the accuracy and the anti-interference capability of gas detection are improved.

The invention belongs to the technical field of power generation and power supply, and particularly relates to a power distribution network electric energy quality monitoring and comprehensive evaluation method and system, and the method comprises the steps: obtaining an environment reference parameter, three-phase voltage data, three-phase current data, transformer harmonic current and transformer harmonic current times; calculating a transformer voltage distortion rate and a transformer total current which represent the overall level of the electric energy quality; calculating a harmonic erosion index representing the load side harmonic frequency spectrum complexity; calculating a thermal harmonic coupling degree used for judging a high temperature generation reason; calculating a power grid health score; grading the operation state of the power grid; judging the fault type; and issuing adjustment instructions to different fault types. The technical problem that the dynamic coupling relation between the harmonic form and the equipment thermal state cannot be evaluated in the prior art is effectively solved.

The invention discloses an operation control method and system of a direct-drive motor, and relates to the technical field of control of the direct-drive motor, and the method comprises the steps: collecting three-phase voltage fluctuation data in real time, extracting a harmonic spectrum in combination with frequency domain analysis, preliminarily estimating the conduction delay and dead-zone compensation time, and increasing dead-zone compensation to form a preliminary optimization parameter when low-order harmonics exceed the standard; and then neutral point deviation, common-mode voltage and three-phase asymmetry degree are evaluated through waveform simulation, finally, a swarm intelligence optimization algorithm is adopted to iteratively adjust a potential balance correction coefficient, conduction delay, dead zone compensation and an interphase time sequence deviation angle to obtain a target time sequence parameter, and a three-phase switch control instruction is generated to be applied to a control system. According to the invention, in the control of the high-power direct-drive motor, the harmonic interference is effectively reduced by optimizing the time sequence design of the switching action, meanwhile, the system risk caused by potential imbalance is avoided, and the operation stability and reliability of equipment are improved.

The invention discloses an urban community household charging pile harmonic suppression method, which comprises the following steps: S1, collecting voltage and current data of a charging pile under different working conditions, analyzing harmonic generation characteristics, constructing a harmonic mathematical model, and determining typical harmonic frequency and amplitude range; s2, an FPGA real-time data processing architecture is designed according to the harmonic model, a high-speed data acquisition module is established, and real-time acquisition and accurate identification of harmonic signals are realized; s3, on the FPGA platform, based on the real-time harmonic spectrum data, deploying an adaptive harmonic suppression algorithm, dynamically filtering the target harmonic frequency, and reducing the harmonic content; and S4, according to suppression effect feedback, FPGA control parameters are optimized, energy consumption and cost of the device are reduced, and precise and efficient harmonic suppression performance and economical efficiency balance is achieved. The method can ensure that the current waveform of the charging pile meets the power grid standard, remarkably improves the harmonic suppression efficiency and the economical efficiency of the device, and reduces the energy consumption and the equipment maintenance cost.

This invention belongs to the field of power generation and supply technology, specifically relating to a method and system for monitoring and comprehensively evaluating the power quality of distribution networks. The method includes: obtaining environmental reference parameters, three-phase voltage data, three-phase current data, transformer harmonic current, and transformer harmonic current order; calculating the transformer voltage distortion rate and total transformer current, which characterize the overall power quality level; calculating the harmonic erosion index, which characterizes the complexity of the harmonic spectrum on the load side; calculating the thermal harmonic coupling degree used to determine the cause of high temperatures; calculating the grid health score; classifying the grid operating status into levels; determining the fault type; and issuing adjustment commands for different fault types. This invention effectively solves the technical problem that existing technologies cannot assess the dynamic coupling relationship between harmonic morphology and equipment thermal state.

The embodiment of the specification provides a bearing fault diagnosis method and system of optimized filtering MCKD, wherein the method comprises the following steps: collecting a vibration signal, performing Fourier transform on a frequency spectrum of the vibration signal to obtain a key function; setting an initial truncation length, performing inverse Fourier transform on the key function based on the initial truncation length to obtain a frequency spectrum trend, taking a minimum value of the trend spectrum as a boundary of spectrum segmentation to divide a filtering frequency band with different bandwidths and center frequencies, increasing the truncation length, repeating the above steps, and recording all results; designing a Mayer wave filter based on the obtained filtering frequency band, and taking the designed Mayer wave filter coefficient as an initial filter coefficient of the MCKD; calculating MCKD filtering results of different initial filter coefficients, quantifying fault characteristics of all filtering signals by a harmonic spectrum kurtosis (HSK), selecting a filtering result corresponding to a maximum value of the HSK as a global optimal solution of the MCKD, and completing fault diagnosis.

The application provides a temperature and concentration reconstruction method based on a normalized second harmonic linear model, belongs to the technical field of tunable diode laser absorption spectroscopy, and is used for two-dimensional temperature and concentration field reconstruction. The reconstruction system comprises a laser control and generation module, a fiber beam splitter, a sensor, a Mach-Zehnder interferometer, a photodetector, a data acquisition system and a computer. The reconstruction method comprises the following steps: after laser is split, one path is connected to the Mach-Zehnder interferometer and is received by the photodetector, the remaining paths pass through the to-be-detected area after being expanded and are received by a photodetector plate, and normalized second harmonic spectra of transmitted light intensities on each light path are obtained; a normalized second harmonic base matrix is calculated according to discrete temperature and concentration; a linear reconstruction model is established according to the sensor light path arrangement, and an iterative algorithm is used to obtain two-dimensional temperature and concentration distribution. The application effectively utilizes the normalized second harmonic spectrum, increases the number of independent equations, and improves the speed and accuracy of two-dimensional temperature and concentration distribution reconstruction.

The application discloses a harmonic and adjacent inter-harmonic parameter estimation method, comprising the following steps: S1, performing Fourier transform on sampling data of a preset time length to obtain frequency domain data; S2, based on the frequency domain data, calculating the amplitude, frequency and phase parameters of a fundamental wave by using a multi-layer interpolation method and removing the influence of the fundamental wave component, and calculating the mapping relationship of a leakage spectrum line and frequency offset of a harmonic component; S3, based on the spectral difference of a single adjacent inter-harmonic and a symmetric adjacent inter-harmonic pair, constructing an adjacent inter-harmonic type criterion, determining the threshold of the criterion according to the noise size in a power system to judge the adjacent inter-harmonic type information; and S4, constructing an adjacent inter-harmonic spectrum line equation set based on the adjacent inter-harmonic type information, and solving the adjacent inter-harmonic spectrum line equation set by using an eigenvalue decomposition method to obtain the amplitude, frequency and phase parameters of the harmonic and adjacent inter-harmonic. The application can judge the type of the inter-harmonic under the frequency offset scene of the power system.

The invention relates to the technical field of femtosecond pulse measurement, in particular to a dispersion scanning pulse self-measurement method based on a chirped pulse amplification laser, which comprises the following steps of: jointly using a stretcher and a compressor which are arranged in the laser as a dispersion scanning system, and adopting a dispersion scanning coordination strategy; continuously adjusting the dispersion amount of the stretcher and the dispersion amount of the compressor, synchronously collecting second harmonic spectrum signals under different dispersion distribution combinations, and constructing a second harmonic spectrum track diagram; according to the method, an adaptive dispersion coupling phase reconstruction algorithm is adopted, iteration processing is conducted on a second harmonic frequency spectrum track diagram, a high-order dispersion compensation item is introduced for optimization, the time domain intensity and phase information of laser pulses are reconstructed, the optimal dispersion compensation amount is determined, and the narrowest pulse width value is output. Therefore, the precision of pulse phase and width measurement and the convergence speed of the algorithm are improved.

The application relates to the technical field of industrial automation control and system state monitoring, and discloses a performance evaluation method and system of an industrial internet connector, which comprises the following steps: the method uses the common-mode noise generated in the power supply loop of the device itself as a diagnostic probe in reverse, establishes the intrinsic harmonic spectrum series relationship representing the stability of the noise source itself when establishing the initial frequency spectrum fingerprint baseline, and in the subsequent periodic evaluation, firstly, the spectrum series relationship is pre-checked, and then, based on the drift index of the current frequency spectrum fingerprint relative to the baseline and the change slope in the continuous time window, the performance evolution of the connector is evaluated. The application shifts the focus of evaluation from the apparent correctness of data transmission to the gradual change trend of the physical structure of the bearing connection, and can identify that the irreversible physical state degradation process of the connector is occurring.

The invention discloses a Nanyin instrumental analysis and music generation processing method and system, and belongs to the technical field of audio signal processing and computer music, and the method comprises the steps: 1, obtaining an original Nanyin sample, and measuring and recording a harmonic spectrum ratio curve, a formant displacement curve and a transient excitation contour in a short frame, forming a triple fingerprint set capable of being expressed by interpolation; step 2, according to the intention of a user, mapping intention primitives into curve offset of the triple fingerprint in the step 1, and generating a target fingerprint track; step 3, mapping the target fingerprint track in the step 2 into a superposable resonator coefficient sequence and an excitation element coefficient sequence; and step 4, according to the resonator coefficient sequence and the excitation element coefficient sequence obtained through mapping in the step 3. According to the invention, the degree of freedom of creation according to the intention of a user can be met, the cavity body feeling of linkage between the Nanyin pitch and the timbre intensity can be accurately reproduced, and the unnatural problem caused by disjunction of the pitch and the timbre is avoided.

The invention discloses an ammeter relay resonance fault detection method and system based on harmonic analysis, and relates to the field of electrical variable measurement, and the method comprises the steps: obtaining a current signal and a voltage signal, and carrying out the preprocessing, and obtaining a current analysis signal and a power grid harmonic spectrum of a current period; quantifying the resonance risk of the power grid based on the power grid harmonic spectrum to obtain a resonance sensitivity index of the power grid in the current period; presetting a candidate wavelet basis set, and obtaining a time-frequency focusing capability evaluation index and a task suitability index of each candidate wavelet basis in the set; based on the three indexes, constructing a dynamic comprehensive cost function and selecting an optimal wavelet basis; and performing wavelet packet decomposition on the current analysis signal based on the optimal wavelet basis, extracting fault features, and identifying and judging the current working state of the relay. According to the method, adaptive selection of the wavelet basis can be realized, and the problems of inaccurate fault feature extraction, high false alarm rate and unreasonable computing resource utilization of an existing detection method are solved.

The application relates to the technical field of power fault identification, and discloses a traveling wave fault positioning method and system. The method is used for positioning a traveling wave fault by screening two traveling wave collecting devices with opposite traveling wave directions and the closest distance, constructing a cubic B-spline wavelet as a wavelet base, performing wavelet decomposition on the traveling wave signals of the screened traveling wave collecting devices, obtaining the highest frequency harmonic component, simulating the harmonic component, determining the fault section in the direction of the first mutation point of the harmonic spectrum obtained through simulation at scale 1, obtaining the wavelet coefficient modulus maximum point at scale 4 of the harmonic spectrum and the corresponding modulus maximum value, calculating the fault time according to the modulus maximum value and the sampling frequency, and calculating the specific position of the fault point in the fault section by using the fault time, so that the fault positioning accuracy is improved.

This application provides a method and apparatus for suppressing transformer losses. It extracts the electromagnetic harmonic characteristic layer, vibration state characteristic layer, and heat loss characteristic layer of a large transformer from historical multi-source operating data. Based on real-time acquisition of the current multi-source operating data and electromagnetic harmonic characteristic layer, it determines the harmonic interference mode of the large transformer. It generates a harmonic compensation current for the harmonic interference mode using the vibration state characteristic layer and heat loss characteristic layer. Based on the compensated multi-source operating data of the large transformer, it generates the measured harmonic spectrum and measured vibration spectrum under the current operating conditions of the large transformer to correct the control parameters of the frequency conversion modulation circuit in the large transformer, thereby suppressing transformer losses. Using the scheme of this application, transformer losses can be synergistically suppressed based on the transformer's vibration state and heat loss characteristics.

The application discloses a running control method and system of a direct drive motor, relates to the technical field of control of the direct drive motor, and realizes the real-time collection of three-phase voltage fluctuation data, extracts a harmonic spectrum in combination with frequency domain analysis, and preliminarily estimates a conduction delay and a dead zone compensation time; when low-order harmonic exceeds a standard, the dead zone compensation is increased to form preliminary optimization parameters; subsequently, neutral point deviation, common-mode voltage and three-phase asymmetry are evaluated through waveform simulation; finally, a swarm intelligence optimization algorithm is adopted to iteratively adjust a potential balance correction coefficient, the conduction delay, the dead zone compensation and a phase-to-phase timing offset angle, target timing parameters are obtained, and three-phase switching control instructions are generated and applied to a control system. In the high-power direct drive motor control, the application realizes the timing design of optimized switching action, effectively reduces harmonic interference, avoids system risks caused by potential imbalance, and improves equipment operation stability and reliability.

Disclosed is a method for detecting and classifying a flying insect. The method includes providing a radar sensor that is configured to transmit a radio wave of a predefined carrier frequency onto the flying insect, and recording a signal reflected from the flying insect, recording harmonic spectrum related to insect's wingbeat in the reflected signal, extracting a plurality of harmonic, spectral and temporal features from the harmonic spectrum resulting from the flapping of wings of the insect, selecting a plurality of relevant features from the extracted features, and analysing the extracted features for determining characteristics of the insect that allow its classification, by using signal processing techniques and machine learning model that is trained on features extracted from radar signatures of one or more flying insect species.

The invention discloses an impeller rotating machinery shaft frequency automatic extraction method based on improved correlation kurtosis, and the method comprises the steps: collecting an impeller rotating machinery radiation noise signal, and calculating a spectrum coherence function; calculating a related kurtosis matrix; screening spectrum coherence slices; calculating the entropy of the screened spectrum coherent slices; constructing a weighting function based on the spectral coherence slice entropy; performing frequency integration along the spectrum after weighting the spectrum coherent slice to obtain a weighted envelope spectrum; calculating a harmonic spectrum of the weighted envelope spectrum based on the improved correlation kurtosis; determining an axis frequency according to the harmonic spectrum peak; according to the method, the extraction modulation features can be enhanced according to the shaft frequency detection interval, and automatic extraction of the impeller rotating mechanical shaft frequency is achieved. According to the method, non-harmonic interference can be effectively suppressed, modulation characteristics are effectively enhanced, and the impeller rotating mechanical shaft frequency can be accurately extracted.

A method and a system for measuring carrier-to-envelope phase fluctuations (CEP) fluctuations of a laser field, the method comprising focusing laser pulses in a solid-state material for high harmonic generation, collecting a resulting high harmonic spectrum, and inferring a relative phase of the driving field from the high harmonic spectrum. The system comprises a source of CEP stable mid-infrared laser pulses; a CEP variation unit; a solid state medium; a detector; and first focusing optics focusing pulses generated by the source into the solid state medium and second focusing optics collecting resulting harmonics generated in the solid state medium into the detector.

The application discloses a sensitive load-oriented micro-grid active power filter cluster cooperative management system and belongs to the field of micro-grid power quality management. The system comprises: a sensitive load portrait module for extracting sensitive load tolerance indexes and constructing a demand portrait; a cluster hierarchical cooperation module for dividing load priorities and generating master-slave cooperation strategies according to the portrait; a dynamic topology reconfiguration module for reconfiguring a control model through a consistency algorithm based on topology changes and cooperation strategies; a virtual impedance adjustment module for optimizing the virtual impedance values of each APF according to the reconfigured model and performing harmonic spectrum shifting; and a harmonic energy dredging module for directing the remaining harmonic energy to non-sensitive loads or energy storage devices when resources are saturated. The application can adapt to differentiated needs of sensitive loads and dynamic topology changes of micro-grids, realize the cooperative management of micro-grid harmonic energy and preferentially guarantee the power quality of sensitive loads.

A system provides for psychoacoustic frequency range extension. The system generates quadrature components from an audio channel, and generates rotated spectral quadrature components by applying a forward transformation that rotates a spectrum of the quadrature components from a standard basis to a rotated basis. In the rotated basis, the system isolates components of the rotated spectral quadrature components at target frequencies, and generates weighted phase-coherent harmonic spectral quadrature components by applying a nonlinearity to the isolated components having a dependence on scale that is subject to constraints. The circuitry generates a harmonic spectral component by applying an inverse transformation that rotates a spectrum of the weighted phase-coherent harmonic spectral quadrature components from the rotated basis to the standard basis. The circuitry combines the harmonic spectral component with frequencies of the audio channel outside of the target frequencies to generate an output channel, and provides the output channel to a speaker.

The application provides a kind of on-chip f-2f self-referencing method of period taper type thin film lithium niobate optical waveguide, period taper waveguide structure is introduced to widen the phase matching bandwidth of second harmonic, make the broadband dispersion wave of supercontinuum spectrum generated by second harmonic spectrum fully cover, so as to reduce the demand of f-2f self-referencing waveguide device to pump pulse energy. ceo Beat signal; that is, the application can effectively widen the phase matching bandwidth of second harmonic, so that the second harmonic generated and the dispersion wave of supercontinuum process have wideband spectrum overlap, and on-chip f-2f self-referencing can be realized under lower pump energy, which can reduce the energy consumption by nearly 40% compared with traditional straight waveguide device.

The application is suitable for the technical field of multi-level topology harmonic suppression and four-quadrant feedback control, and provides a multi-level topology harmonic suppression and four-quadrant feedback integrated control system and method, which comprises the following steps: S1, system initialization, input parameters, and loading preset parameters; S2, real-time calculation of output voltage harmonic distortion rate THD through fast Fourier transform, harmonic analysis, if the harmonic analysis is greater than 5%, the adaptive harmonic elimination algorithm is activated, and a compensation voltage waveform is generated; S3, separation of active / reactive components through Park transformation, judgment of energy flow direction, and four-quadrant mode switching; S4, the compensation voltage is superimposed on the modulation wave through the improved SVPWM, and then four-quadrant feedback control is carried out; S5, IGBT junction temperature, DC bus ripple, and harmonic spectrum are collected, power grid voltage fluctuation is predicted based on LSTM, and the carrier frequency is dynamically adjusted. The scheme has good harmonic suppression effect, high energy efficiency improvement, fast dynamic response, low maintenance cost, and strong environmental adaptability.

The invention relates to the technical field of power distribution network monitoring, and particularly discloses an intelligent monitoring method and device for a distribution network line fuse based on multi-parameter sensing, and the method comprises the steps: collecting the lattice strain of a fuse, the micro displacement of a contact, a harmonic frequency spectrum and a medium decomposition product, calculating a harmonic thermal equivalent coefficient, and carrying out the decoupling generation of a lattice intrinsic strain field, identifying a fretting wear phase point and a medium effective heat absorption rate; inputting the parameters into a multi-physical field degradation deduction model, and outputting a whisker critical bridging risk, contact resistance nonlinear jump probability distribution and a limit breaking capacity attenuation coefficient; and according to the risk value, calculating an actual protection capability boundary and generating a protection characteristic drift trajectory, performing space-time alignment on the drift trajectory of the multi-stage fuse, deducing a selective protection mismatch area and an evolution trend, and generating and issuing a reconstruction instruction including rated current adjustment, upper-stage delay correction or bypass protection starting. According to the invention, quantitative identification of the micro degradation process of the fuse and dynamic reconstruction of the protection capability are realized.

The application discloses a kind of electric meter relay resonance fault detection method and system based on harmonic analysis, it is related to the field of measurement electric variable, method includes: obtaining current signal and voltage signal and pre-processing, obtain the current cycle of current analysis signal and power grid harmonic spectrum;Based on power grid harmonic spectrum, the resonance risk of power grid is quantified, and the resonance sensitivity index of current cycle power grid is obtained;Pre-set candidate wavelet basis set, obtain the time-frequency focusing ability evaluation index and task adaptability index of each candidate wavelet basis in set;Based on three indexes, construct dynamic comprehensive cost function and select optimal wavelet basis;Based on optimal wavelet basis, wavelet packet decomposition is carried out to current analysis signal, and the current working state of relay is extracted fault feature and identified to judge.The application can realize the adaptive selection of wavelet basis, solve the problem that fault feature extraction is not accurate, false positive rate is high, and computing resource is not reasonably utilized in existing detection method.

This invention relates to the field of industrial safety technology, and in particular to an anomaly detection method and system for coal mine operation scenarios based on a causal wavelet resonance network. The method includes: acquiring multimodal sensing data and constructing a high-dimensional spatiotemporal feature field; transforming the high-dimensional spatiotemporal feature field using a causal wavelet resonance network to extract a real-time causal resonance spectrum; retrieving a pre-learned baseline harmonic spectrum and its covariance matrix, calculating the Mahalanobis distance between the baseline harmonic spectrum and the real-time causal resonance spectrum, and generating a spatiotemporal detuning map; determining whether the detuning value at each spatiotemporal location in the spatiotemporal detuning map exceeds a preset threshold; if it does, it is considered an anomaly; analyzing the causal wavelet type and parameters that contribute most to the detuning, and generating interpretable anomaly alarm information, thereby improving the anomaly detection accuracy and enabling highly sensitive perception and interpretable judgment of weak, unknown, and causal-logically implied anomalies.

The invention relates to the technical field of industrial automation control and system state monitoring, and discloses a performance evaluation method and system for an industrial internet connector, and the method comprises the steps: enabling the endogenous common-mode noise in a power supply loop of equipment to be reversely used as a diagnosis probe, and enabling the endogenous common-mode noise to be used as an initial frequency spectrum fingerprint baseline when the initial frequency spectrum fingerprint baseline is established; the method comprises the following steps: acquiring a noise source, determining an internal harmonic spectrum relation representing the stability of the noise source, performing pre-verification on the spectrum relation in subsequent periodic evaluation, and evaluating the performance evolution of a connector based on a drift index of a current spectrum fingerprint passing verification relative to a baseline and a change slope in a continuous time window. According to the invention, the evaluated focus is transferred from the apparent correctness of data transmission to the progressive change trend of the physical structure for bearing connection, and the irreversible physical state degradation process of the connector can be identified.

The invention discloses a new energy power supply distribution network adaptive distance protection method based on a harmonic frequency spectrum model in the technical field of power system relay protection, and aims to solve the problem that the nonlinear error of fundamental wave measurement is aggravated due to distance protection measurement impedance distortion caused by harmonic voltage drop. The method comprises the following steps: firstly, extracting each harmonic component in fault current and voltage in real time, and constructing a frequency spectrum model of harmonic and power frequency components by adopting a first-layer recursive least square method; based on the frequency spectrum model, a corrected power frequency impedance measurement value is obtained through a second-layer recursive least square method, the corrected impedance is combined with the fault type, and the fault type is recognized by adopting a support vector machine (SVM) improved peak value measurement method; the three-section distance protection logic is executed, and after the voltage / current abrupt change triggers a fault, fault section judgment and action time limit control are realized by comparing a corrected impedance value with a setting range, so that the protection range narrowing and maloperation risks caused by new energy harmonic waves are eliminated, and the reliability of a power grid is improved.

The invention discloses an AI driving type harmonic collaborative treatment method and device and a medium, and the method comprises the steps: collecting multi-source heterogeneous data through a pre-deployed monitoring terminal, carrying out the data fusion processing of the multi-source heterogeneous data, and constructing a system state feature vector; using a long-short-term memory network model to predict a harmonic spectrum dynamic change trend in a future time window based on the system state feature vector, and outputting a current amplitude sequence of each main feature harmonic; calculating a compensation priority weight vector of each harmonic based on the predicted harmonic spectrum dynamic change trend and the system state feature vector by using a reinforcement learning algorithm, and generating a compensation current instruction of the active power filter based on the compensation priority weight vector; and controlling the active power filter cluster to execute harmonic compensation operation according to the compensation current instruction, converting the compensation current instruction into actual compensation current through a pulse width modulation and driving unit, and injecting the actual compensation current into a power grid to realize dynamic cooperative treatment.

The invention relates to the technical field of artificial intelligence and human resources, and discloses a man-post bidirectional matching method and system based on manifold harmonic analysis, and the method comprises the steps: constructing a capability pure compound and a demand pure compound from the multi-dimensional data of a person and a post; the method comprises the following steps: carrying out spectrum analysis on a Hough-Laplace operator defined on a compound, and extracting a harmonic spectrum representing a topological structure; calculating an alignment score between harmonic spectrums to quantify a structure integrating degree; and generating capability gap analysis and development suggestions according to the mismatch component. According to the method, the matching problem is improved from vector similarity calculation to manifold topological structure alignment analysis, the personal ability structure, development potential and cooperation adaptability can be deeply evaluated, and an interpretable matching result and diagnosis are provided.