459 results about "Stability test" patented technology

The invention discloses a slope stability test device and test method, and relates to the technical field of slope test.The slope stability test device comprises a test frame and further comprises a test adjusting device.A shielding frame is slidably installed on the inner wall of the test frame, a displacement sensor is fixedly installed on the front side of the shielding frame, and a slope model is arranged at the bottom of the inner wall of the test frame; a placing plate is fixedly installed on the inner wall of the test frame, the test adjusting device comprises hydraulic equipment, an L-shaped frame, an adjusting rod, a pressing plate, an adjusting gear, a U-shaped rod, a limiting frame and an elastic telescopic rod, and the pressing plate moves to make contact with the slope model and conducts a stability test on the slope model; meanwhile, the displacement sensor works to detect and record the displacement condition of the slope model in real time, external force mistaken touch is prevented through the elastic telescopic rod, it can be ensured that the angle of the pressing plate is kept stable in the test process, and therefore the real stability of the slope model is correctly reflected.

The invention discloses a sliding bearing-rotor system stability test system and method under an impact load, and relates to the field of rotating machinery test in mechanical engineering. According to the technical scheme, different types of impact loads are applied through a vibration acceleration platform, and starting, stopping or external impact force in actual working conditions is simulated. In the testing process, a high-precision sensor and a multi-channel acquisition board card are used for monitoring the vibration characteristic and the rotating speed of the system in real time, it is guaranteed that signals of different positions and types can be synchronously acquired, and comprehensive system state information is provided. Then, in combination with time domain and frequency domain analysis technologies, key features are extracted from mass data by applying an advanced Fourier transform algorithm, the resonant frequency, modal characteristics and potential fault modes of the system are identified, and accurate evaluation of the stability of the system is realized. Experimental results show that the real-time monitoring and analysis method can effectively improve the stability test precision of the sliding bearing-rotor system under the impact load, and provides powerful technical support for engineering application. The method is used for evaluating the stability of the sliding bearing-rotor system under the impact load.

The invention relates to the field of computer systems, in particular to an operation stability testing method and system oriented to a heterogeneous computing system, and the method comprises the steps: constructing a system overall operation logic model comprising a resource topological structure, a task scheduling rule and a communication link matrix; identifying a key communication path according to the communication link matrix, analyzing a resource competition hotspot in combination with a task scheduling rule, and establishing an interference model library; calling a specific model instance in the interference model library according to a test target, configuring injection parameters, and dynamically applying interference in a system operation process; key performance indexes in the system operation process are collected in real time; based on the real-time monitoring data, a multi-index weighted scoring algorithm is adopted to calculate an overall stability coefficient, a robustness grade and a self-healing capability index of the system, and a stability evaluation result is generated; and generating a visual report according to the topological structure of the operation logic model, and supporting comparison and analysis of historical versions. Unified centralized management is realized, and test efficiency and evaluation accuracy are improved.

The invention discloses a terminal computing power management platform stability test method and system, and belongs to the technical field of computing power platform tests.The method comprises the steps that for a test object, connection is established, basic configuration is carried out, and association extraction is carried out; service arrangement, self-definition of published message test parameters and message template customization are carried out to quickly create a service pressure test script and accurately simulate access of users of different magnitudes to a service system; scene construction: dividing a test scene according to two basic dimensions of connection and message throughput, constructing a standard test scene, and rapidly simulating a complex service scene in combination with a set point, thinking time and a condition control instruction; result visualization and performance optimization are carried out, and the performance is optimized by combining service index and resource index data in a test report, so that the stable operation of the system is ensured. According to the invention, various scenes and configurations can be quickly constructed, the test difficulty is reduced, the test efficiency is improved, and the test reliability is ensured.

The invention relates to the technical field of building structure detection equipment, in particular to an assembly type ancient building supporting structure stability detection device which comprises a base, a mounting pipe, a pressure mechanism, a connecting mechanism and a top plate, the mounting pipe is arranged in the middle of the top surface of the base, and a lifting mechanism is connected in the mounting pipe; the top surface of the base is connected with a pressure mechanism, a connecting mechanism and a measuring mechanism, the pressure mechanism is in contact fit with the end part of the measuring mechanism, the measuring mechanism is arranged above the mounting pipe, a top plate is arranged on the connecting mechanism, the top plate is arranged above the measuring mechanism, and the pressure mechanism and the measuring mechanism are arranged to measure the structural stability of the supporting column before mounting; meanwhile, the state of real pressure borne by the supporting column after installation can be simulated through cooperation of the lifting mechanism and the top plate, so that the device can further test the stability of the supporting column after installation, the comprehensiveness of stability detection is improved, and the safety of the supporting column after being put into use can be further ensured.

The invention discloses a performance test system for an aluminum electrolytic capacitor, and relates to the technical field of capacitor performance test, an environment simulation module accurately simulates a high-temperature and high-humidity environment, and an electrical performance monitoring module obtains key performance parameters in real time; the dynamic parameter acquisition module detects the electrolyte evaporation rate and the high-frequency impedance response curve change based on a mass loss method, the data analysis module comprehensively evaluates the stability of the operation performance, and the test adjustment module predicts and dynamically adjusts the test condition according to the abnormal degree, thereby achieving the comprehensive and accurate evaluation of the performance of the aluminum electrolytic capacitor. The test accuracy is effectively improved, the service life prediction is optimized, and high-reliability guarantee is provided for an industrial control system.

The invention discloses a sliding bearing-rotor system stability test system and method under a complex alternating load, and relates to the field of rotating machinery test in mechanical engineering. According to the technical key points, a multi-direction and multi-frequency dynamic load is applied through a six-degree-of-freedom platform, and a complex vibration and stress environment in an actual working condition is simulated. In the testing process, a high-precision sensor and a multi-channel acquisition board card are used for monitoring the vibration characteristic and the rotating speed of the system in real time, it is guaranteed that signals of different positions and types can be synchronously acquired, and comprehensive system state information is provided. Then, in combination with time domain and frequency domain analysis technologies, key features are extracted from mass data by applying an advanced Fourier transform algorithm, the resonant frequency, modal characteristics and potential fault modes of the system are identified, and accurate evaluation of the stability of the system is realized. Experimental results show that the real-time monitoring and analyzing method can effectively improve the stability testing precision of the sliding bearing-rotor system under the complex alternating load, and powerful technical support is provided for engineering application. The method is used for evaluating the stability of the sliding bearing-rotor system under the complex alternating load.

The invention relates to the technical field of material science, and particularly discloses a glaze performance evaluation method and system based on multiple application scenarios, and the method comprises the steps: obtaining the original data of the hardness value and wear loss of glaze, carrying out the standardization processing, calculating the hardness distribution index and wear resistance index, and carrying out the comprehensive analysis and classification of the glaze, thereby achieving the evaluation of the performance of the glaze. Qualified glaze and unqualified glaze are distinguished; then carrying out high-temperature stability test on the qualified glaze, and screening out the glaze with high thermal stability; and finally, a particle swarm optimization algorithm is adopted to search for an optimal solution of a hardness value and a wear loss regulation interval, and it is ensured that the glaze shows excellent performance in a changeable application environment. Through the systematic evaluation process, the problems of fuzzy standard, lack of scientific basis, poor performance consistency and low evaluation efficiency in a traditional evaluation method are solved, the consistency and reliability of glaze performance are effectively improved, the product quality is ensured, and the evaluation efficiency is remarkably improved.

The invention provides a real-time stability test platform and method for data acquisition of a power distribution control chip. The real-time stability test platform comprises a test power grid, an acquisition system, a to-be-tested control chip, a high-low temperature alternating box, an upper computer and a clock module, the upper computer is used for storing a plurality of test programs, controlling the high and low temperature alternating box and the test power grid to obtain different working conditions, calling the corresponding test programs according to the different working conditions, sending out corresponding control instructions, and performing stability analysis on the control chip to be tested according to the first test data and the second test data; and obtaining a stability test result. The problem that in the prior art, a single parameter testing method is difficult to comprehensively evaluate the stability of a control chip in an actual complex environment in real time is solved; according to the invention, the stability of the control chip is efficiently tested in real time, and the problems of difficult simulation of complex working conditions and multi-parameter coupling influence can be solved.

The invention discloses a stability test method, system and device for UFS equipment and a storage medium, and the method comprises the steps: dividing a storage unit of the UFS equipment into m storage partitions, and obtaining n target tasks; randomly distributing the n target tasks to m storage partitions; randomly obtaining n target operation commands corresponding to the n target tasks; asynchronously sending the n target operation commands to the m storage partitions; randomly sending the task termination command to one or more target tasks for termination test to obtain a target test result; and generating a stability test report according to the target test result. The target operation command is randomly selected to execute the operation of the target task, the comprehensive test of the operation relative to the target task is ensured, the task termination command is randomly sent to one or more target tasks, the comprehensive test of the test is ensured, and the test accuracy is further improved.

The invention discloses a method for determining a calibration scheme of a pressure sensor, and relates to the technical field of sensor equipment. Comprising the following steps: determining the working condition of the sensor, selecting adaptive reference equipment, setting a pressure loading point, constructing a dynamic pressure loading module, evaluating the performance of the sensor under a complex working condition through environmental simulation, carrying out an overload test aiming at an extreme condition, carrying out a long-time stability test, and constructing a non-calibration working condition verification model. And optimizing a calibration strategy by an intelligent algorithm to complete a pressure sensor calibration scheme. According to the method for determining the calibration scheme of the pressure sensor, static calibration, dynamic response test, environmental simulation and non-calibration working condition verification are systematically integrated by constructing a non-calibration working condition verification model and combining a multi-point pressure loading strategy, a dynamic pressure loading module and overload test. Meanwhile, an intelligent algorithm is introduced to optimize a calibration strategy, and multi-factor interaction under complex working conditions is compensated and corrected.

The invention relates to the technical field of mass spectrometer stability detection, in particular to clinical mass spectrometer key performance stability detection equipment which comprises a box body, a box cover is hinged to the top of the box body, a height adjusting mechanism is fixedly connected to the middle of the bottom in the box body, and a buffer mechanism is hinged to the top of the height adjusting mechanism. By arranging the buffering mechanism, in the carrying process, the side buffering assembly on each face in the frame body groove body plays an important role, when the device body is impacted and moves towards one side, the side buffering spring on the side is extruded for preliminary buffering, the spring on the other side is stretched for further buffering, and no matter which direction is impacted, the buffering effect is good. Compared with the prior art, the mass spectrometer stability testing device has the advantages that the device can play a good buffering and protecting role in the mass spectrometer stability testing process, obviously, the device is convenient to carry and use flexibly, can conveniently cope with mass spectrometer stability tests in different scenes during use, has good protection performance, and can better adapt to the mass spectrometer stability tests due to the height-adjustable design.

The invention relates to the technical field of memory bank testing, and discloses a server mainboard memory bank plugging and unplugging test system which comprises a mechanical plugging and unplugging module, a sensor module, a pre-detection module, a test analysis module and a result display module.According to the server mainboard memory bank plugging and unplugging test system, automatic operation is achieved through the mechanical plugging and unplugging module, and accuracy and efficiency are improved; the sensor module adopts a four-wire system resistance measurement sensor, the contact resistance is accurately measured, and the contact detection precision is guaranteed; the pre-detection module can screen out memory banks with appearance scratches in advance from multi-angle image acquisition and equal-interval grid division to accurate pixel value analysis by utilizing a scientific appearance detection process; the test analysis module comprehensively evaluates the performance, the contact state judgment is clear, and the memory read-write and stability test is rigorous and scientific; a test report generated by the result display module visually shows results of scratch, contact, read-write, stability and the like, comprehensive information is provided for operators, and efficient judgment of the performance of the memory bank is assisted.

The invention belongs to the field of wind tunnel experiments in a hypersonic flow field environment, and discloses a multi-degree-of-freedom high-frequency motion simulation device for an aircraft dynamic stability test and a calculation method for realizing an actuation angle. According to the technical method, calculation is carried out on the basis of an electromechanical coupling equation, determined by electrical parameters and mechanical parameters, of a piezoelectric material. Modeling can be carried out according to a piezoelectric equation to obtain a calculation method between the voltage applied by the piezoelectric actuator and the pitching and yawing actuation angles of the device, so that the excitation effect of the device in the ground test process can be accurately controlled and predicted. The method is not only suitable for pitching and yawing two-degree-of-freedom actuation calculation, but also can be used for calculating the actuation angle of a three-axis degree-of-freedom experimental device added with rolling drive through coordinate transformation under the condition of adding parameters such as rolling angular velocity and the like in the face of the three-axis degree-of-freedom experimental device added with rolling drive. At present, according to a calculation method based on the device, calculation is carried out only by considering the degree of freedom of the pitching axis and the yawing axis.

The invention discloses an end slope mining side slope real-time stability testing system and method, and relates to the technical field of open pit coal mine end slope mining safety monitoring and early warning, and the method comprises the steps that a distributed optical fiber sensing network arranged on a side slope surface and a mining chamber top plate collects acoustic emission and strain time sequences; a solid-state laser radar array arranged on the stope platform collects slope surface point cloud data of the stope platform; during data acquisition, the solid-state laser radar array and the distributed optical fiber sensing network are in time alignment; carrying out slope displacement increment extraction on the slope point cloud data of the monitored area by the edge GPU node; the data analysis cloud platform is used for performing microfracture identification according to the acoustic emission and strain time sequence; and inputting the slope displacement increment, the micro-fracture event count and the strain time sequence into the trained stability evaluation model to obtain a stability evaluation result, and capturing the internal micro-fracture, surface micro-displacement and shear-expansion coupling characteristics in real time, and providing high-reliability instability prediction.

The invention belongs to the technical field of quantum information science, and particularly relates to a multi-soliton time domain distribution representation device and method. According to the multi-soliton time domain distribution characterization method, the time delay of one arm of the HOM interferometer is changed through the adjustable light delay line to carry out coincidence measurement of HOM interference, and characterization of multi-soliton time domain features is achieved. All devices used in the stability test method are mature commercial devices, can be used in the fields of quantum communication, quantum calculation, quantum precision measurement and the like, and are beneficial to practical and commercialized development of light quantum information science and technology.

Automated memory overclocking is described. In accordance with the described techniques, one or more sets of overclocked memory settings of a memory are automatically selected for performance testing and stability testing of the memory. The one or more sets of the overclocked memory settings are tested for performance of the memory and a performance indication is output for each of the one or more sets of the overclocked memory settings. The one or more sets of the overclocked memory settings are tested for stability of the memory and a stability indication is output for each of the one or more sets of the overclocked memory settings. One of the one or more sets of the overclocked memory settings are selected as optimized overclocked memory settings for the memory.

The invention discloses a wind power plant synchronization stability test method and system based on hardware-in-the-loop simulation, and relates to the technical field of wind power test.The method comprises the steps that parameters, set in simulation model software, of all parts of a wind turbine generator are obtained, and an initial wind turbine generator model is generated according to the parameters of all the parts of the wind turbine generator; inputting the operation control instruction for simulating the operation condition of the power grid into the initial wind turbine generator model of the simulation model software, and generating a wind turbine generator model which can be used for a simulation test of a control system; inputting a strategy control instruction of which the synchronization stability needs to be verified into the wind turbine generator model; performing a simulation test on the wind turbine generator model based on a hardware-in-the-loop simulation platform, and outputting a simulation result; the simulation result is processed and analyzed, and the control strategy effect and the operation state of the wind power plant under different power grid operation are evaluated. According to the invention, the actual operation condition of the power grid can be comprehensively simulated, and the synchronous stable operation capability of the wind power plant is verified.

The invention discloses an FAKRA wire harness error code testing device and method, and relates to the technical field of error code testing. The method comprises the following steps of preparation before test, basic electrical test, limit plugging test, vibration test, stability test and test result analysis. According to the method, the initial bit error rate of the to-be-tested FAKRA wire harness is tested by using the bit error tester after the test equipment is calibrated, then the connectors at the two ends and the matched connector are subjected to the limit plugging test, then the vibration test is performed, and the simulation degree of the vibration test is evaluated, so that whether vibration simulation optimization is performed or not is determined; according to the method and the device, firstly, the fluctuation condition of the bit error rate is monitored in the test period, so that whether a clock optimization measure is taken or not is determined, finally, all test data are collected, the stability of the bit error test is ensured, and the problem that the bit error test accuracy is reduced due to the fact that the vibration test simulation degree is not high enough and the simulation quality is unstable in the prior art is solved.

The present invention provides a grid simulator and a test device for the stability test of a grid-connected converter. Among them: The voltage-controlled converter uses a virtual impedance controller and a voltage controller to achieve the port voltage characteristics of the simulated grid, and the voltage-controlled converter has a relatively high switching frequency; the current-controlled converter uses a transient current controller and a current controller to absorb or generate the port load current of the simulated grid, and the current-controlled converter has a relatively low switching frequency; the AC sides of the two converters are connected in parallel and directly connected to the port of the simulated grid, or connected to the port of the simulated grid through a resistor-impedance network. The virtual impedance controller eliminates the differential operator through the Norton equivalent circuit and accurately reproduces the port impedance characteristics of the grid. The present invention can effectively simulate and shape the grid impedance characteristics in a wide frequency band, so as to conveniently realize the stability test of the grid-connected inverter under different grid impedance conditions.

The invention discloses an oil reservoir numerical simulation method considering oil-gas phase equilibrium change in micro-nano pores. The method comprises the steps that stability testing is conducted on a phase equilibrium grid to be calculated to preliminarily judge whether an oil-gas mixing system represented by the grid is in a two-phase state or a single-phase state; for the oil-gas mixing system in the two-phase state, iteratively calculating phase separation considering capillary force to obtain a final two-phase equilibrium composition; the stability discrimination method comprises the following steps: calculating the current capillary force of the oil-gas mixing system to obtain corresponding gas-phase pressure and liquid-phase pressure, and performing the stability test by using the gas-phase pressure and the liquid-phase pressure; the problem that the capillary force effect cannot be considered in actual oil and gas reservoir model simulation of a conventional complex geological structure and a large-scale grid is solved, and the technical precision and efficiency can be ensured at the same time, so that the method can be directly applied to an actual digital-analog process.

The invention discloses a multi-parameter high-precision automatic test method and system for a voltage reference source, and the method comprises the following steps: selecting a test scheme according to the characteristics of a tested voltage reference source device, and carrying out the testing of starting time, initial precision, temperature coefficient, linear regulation rate and long-term stability; the automatic test system controls the adjustable DC voltage source to adjust the input voltage of the tested voltage reference source device according to the selected test scheme, and controls the high and low temperature test box to adjust the working environment temperature of the tested voltage reference source device; the automatic test system reads voltage data collected by the eight-bit and half-digit meter, and analyzes, processes, classifies and stores the voltage data according to a test scheme. The method is used for overcoming the defects of insufficient precision, poor synchronism and tedious process in the traditional test, and provides a reliable technical means for research, development, verification and mass production screening of the high-precision voltage reference source device.

The invention relates to the technical field of textile equipment testing, in particular to a yarn textile high-speed spindle operation stability testing method and system, and the method comprises the following steps: S1, testing element layout; s2, initializing the system; s3, carrying out transient test; s4, testing a steady state; s5, interference processing: carrying out spectrum analysis on the originally acquired data, identifying interference frequency characteristics, eliminating interference by adopting a notch filtering and Kalman filtering combined method, and verifying a filtering effect; s6, parameter correlation modeling: constructing a vibration-temperature-tension-rotating speed parameter correlation model by adopting a control variable method, solving model parameters through a fitting algorithm and verifying validity; s7, quality tracing; s8, stability judgment; and S9, performing real-time monitoring and regulation. According to the method, a combined filtering scheme of notch filtering and Kalman filtering is adopted, fixed interference and random interference such as power frequency and mechanical resonance are suppressed in a targeted manner, and through comparison of locally amplified signals, the filtered signals are smooth in waveform and thorough in noise removal, and the signal-to-noise ratio and reliability of vibration detection signals are improved.

Automatic memory overclocking is described. In accordance with the described techniques, one or more sets of overclocking memory settings of a memory are automatically selected for performance testing and stability testing of the memory. The one or more sets of overclocking memory settings are tested to obtain performance of the memory, and a performance indication is output for each of the one or more sets of overclocking memory settings. The one or more sets of overclocking memory settings are tested to obtain stability of the memory, and a stability indication is output for each of the one or more sets of overclocking memory settings. One of the one or more sets of the overclocking memory settings is selected as an optimized overclocking memory setting for the memory.

The invention belongs to the technical field of distributed control systems, and particularly relates to a stability test method and device for a static credible verification function of a credible DCS controller, and the method comprises the steps: obtaining a program and a configuration file needed in a stability test process of the DCS controller in a static state; obtaining a configuration mark state of the configuration file, and carrying out a stability test according to the program, the configuration mark state of the configuration file, the trusted module state of the static trusted verification function module and a corresponding operation result; obtaining a first test result and a second test result; and obtaining a first test result and a second test result corresponding to all the configuration strategies and the parameters according to the program, writing all the first test result and the second test result and the corresponding configuration strategies and parameters into a specified file, and generating a test report. According to the method, the credibility of comprehensive static credible verification is improved, the test time is shortened, and the test progress and quality are improved.

The invention relates to the technical field of dies, in particular to a technological method for improving the part material utilization rate through cutting-free one-step cutting. S1, determining an optimization target, and preparing a blank; and S2, selecting a proper algorithm for the selected hot-formed product to perform automatic layout on the hot-formed product. And S3, a proper first connecting knife edge and a proper second connecting knife edge are selected for a hot forming product. And S4, a plurality of operation schemes can be obtained through S2 and S3, the schemes are evaluated through theoretical verification of the schemes, and the scheme with the best effect is obtained through comparison. And S5, implementing verification is conducted on the specific forming scheme mentioned in the S4. And S6, after the verification is passed, carrying out stability test on the product. And S7, verifying the material utilization rate of the finally produced effective material. Compared with the prior art, the rolling width and the step pitch are reduced, the overall comprehensive cost is greatly reduced, stamping forming and welding procedures are not affected, and the utilization rate of part materials can be increased.

The invention provides a digital domain visible light adversarial sample performance testing method, and relates to the technical field of adversarial sample performance testing. The method comprises the following steps: training a target detector; generating a digital domain visible light confrontation sample; giving a resistance index before a resistance sample performance test; fourier transform is carried out on the adversarial sample; superimposing a transfer function on the adversarial sample after Fourier transform; inverse Fourier transform is carried out on the adversarial sample after superposition of the transfer function; providing countermeasure indexes after the countermeasure sample performance test; giving a resistance relative change condition before and after a resistance sample performance test; according to the method, the influence of an imaging environment and imaging equipment on the performance of the visible light adversarial sample is considered, the robustness and stability testing means of the digital domain adversarial sample are enriched, and meanwhile, the method has important guiding significance for design and generation of the physical domain adversarial sample.

The invention discloses an aeroelastic model correction method based on frequency domain response data, and belongs to the field of aeroelastic design of aircrafts. According to the method, an aeroelastic model of a to-be-studied aircraft is constructed, a ground flight control structure coupling test is firstly carried out, correction coefficients of generalized mass, generalized damping, a generalized stiffness matrix and a control surface coupling inertia mass matrix are calculated by using frequency response data of the ground test through an optimization method, and then a flight aerodynamic servo stability test is carried out. And calculating correction coefficients of the unsteady aerodynamic coefficient matrix of the body mode and the unsteady aerodynamic coefficient matrix of the control plane deflection mode based on the corrected structural parameters, and finally realizing correction of the aeroelastic model. According to the method, the time and labor consumption of traditional manual correction is avoided, multi-variable correction can be carried out while multi-test response is considered, the problem that pneumatic correction in traditional correction is relatively difficult is solved, pneumatic correction is considered while the aircraft structure is corrected, and an accurate aeroelastic model can be obtained.

The invention relates to the technical field of circuit component selection and matching, in particular to a circuit component selection and matching method and system and a medium. The method comprises the following steps: acquiring rated voltages and rated currents of different elements through circuit assembly information; establishing a blank circuit simulation space by adopting the blank circuit design information; performing overload thermal density quantification on the rated voltage and the rated current of the different elements according to the blank circuit simulation space, and performing element performance degradation comparison among the different elements to obtain element performance degradation ratios among the different elements; performing periodic performance degradation prediction based on the element performance degradation ratio to obtain a periodic performance degradation prediction report among different elements; and carrying out stability test on the periodic performance decline prediction report, and carrying out circuit element selection and matching based on the stability test. According to the invention, the circuit component selection and matching technology is optimized, so that the circuit component selection and matching technology is more perfect.

An operation and maintenance alarm method and apparatus, and a storage medium and an electronic device. The method comprises: acquiring an operation and maintenance data set to be processed, and by means of a target algorithm, performing data cleaning processing on operation and maintenance data in the operation and maintenance data set to be processed, so as to obtain a processed operation and maintenance data set (S101); performing a stability test on a time sequence of the operation and maintenance data in the processed operation and maintenance data set, so as to obtain a test result, and determining a first operation and maintenance data set from the processed operation and maintenance data set on the basis of the test result (S102); performing feature extraction processing on the first operation and maintenance data set by means of a principal component analysis method, so as to obtain a plurality of operation and maintenance data features, and performing feature selection processing on the plurality of operation and maintenance data features by means of a K-means clustering algorithm, so as to obtain a target operation and maintenance data set (S103); and performing alarm analysis on the basis of the target operation and maintenance data set, so as to obtain an alarm analysis result (S104). The technical problem in the prior art of the accuracy of an operation and maintenance alarm being relatively low due to the fact that the accuracy of data pre-processing performed on the basis of a fixed rule is low is solved.