205 results about "Software simulation" patented technology

The invention discloses a deep learning-based staged tension prestress long-term loss prediction method, which belongs to the field of deep learning, solves the problem of poor prediction result robustness of a traditional prestress measurement method, and comprises the following steps: obtaining bridge original data based on a standard drawing set and a bridge design specification; based on the construction environment conditions and the concrete age, concrete material attributes are calculated; based on bridge original data and concrete material attributes, finite element software is used for simulating prestressed reinforcement staged tensioning processes under different working conditions, and a bridge prestressed reinforcement staged tensioning loss data set is generated; and constructing a prestress loss prediction model based on the multi-layer perceptron neural network, processing the staged tensioning loss data set of the bridge prestressed reinforcement based on the prestress loss prediction model, and outputting a prediction result of long-term loss caused by shrinkage and creep of the prestressed reinforcement. According to the method, the stress loss of the prestressed reinforcement can be effectively predicted, and the prediction robustness and accuracy are improved.

The invention relates to the technical field of software simulation operation simulation, and discloses a software logic simulation operation control method and system in an audio processor. The control method is applied to logic simulation operation control equipment and specifically comprises the following steps that S101, an audio processor simulation operation request sent by a user side is received, a graphical user interface is generated according to the operation request, and the graphical user interface comprises a logic module list area, a design editing area, an attribute bar and an information display area; and the user side drags an icon of a logic circuit element from the logic module list area to the design editing area. Through a highly integrated graphical interface and intelligent interactive design, the design and simulation efficiency of an audio processor logic circuit is remarkably improved, and by adopting a'drag-and-generate 'module instantiation mechanism, an attribute bidirectional real-time synchronization technology and visual connection and signal type inspection, the reliability of the audio processor logic circuit is greatly improved. Therefore, the user can intuitively and quickly construct the complex circuit topology, and the professional threshold is greatly reduced.

The invention provides an automatic simulation test system and method for a semiconductor EAP system, and belongs to the field of semiconductor manufacturing, and the method specifically comprises the steps: defining a test scene through test case coding; constructing a test environment by using the equipment simulation module and the external system simulation module; driving a test process of the tested EAP program through an automatic execution engine and generating real-time output data corresponding to the tested EAP program; and comparing the real-time output data generated by the automatic execution engine with an expected result, and generating a test report. According to the processing scheme, behaviors of equipment and an external system are truly simulated in a software simulation mode, an actual production scene is accurately restored in a test link, dependence on a physical environment is reduced, and test coverage is improved; and moreover, the test scene is solidified through codes and configuration files, so that the versioning management and one-key automatic regression test of the test cases are realized, the test efficiency is remarkably improved, and the quality of secondary development is guaranteed.

The invention discloses a single-stroke breakpoint-free path planning method for a 3D printing variable-wall-thickness honeycomb structure, and the method comprises the following steps: determining the stress distribution condition of an equal-wall-thickness honeycomb structure continuous carbon fiber reinforced silicon carbide ceramic-based composite material through software simulation, and determining a weakest region and a weakest region; variable-wall-thickness honeycomb printing is arranged in the weakest area and the weaker area; the side length and the offset distance of the honeycomb unit are determined, and a 3D printing path is set, specifically, the odd-number-layer path is different from the even-number-layer path, the outer contours of the honeycomb unit are sequentially printed in the vertical direction through the odd-number-layer path, the honeycomb unit does not completely pass through each honeycomb wall of the honeycomb structure, and the honeycomb structure is not completely formed after printing is completed; and when the next even-numbered layer is printed, missing honeycomb walls of the upper odd-numbered layer are passed twice, so that the missing honeycomb walls are complemented, and a complete variable-wall-thickness honeycomb structure is formed. According to the method, weak spots are effectively strengthened in a targeted mode, the material is not prone to damage, and the mechanical property is remarkably improved.

The invention discloses an industrial simulation control method and system based on natural language driving, and belongs to the technical field of industrial simulation. According to an existing industrial simulation control scheme, how to transmit simulation parameters into simulation software is not disclosed, and setting of simulation instructions cannot be completed. According to the industrial simulation control method based on natural language driving, a natural language instruction input by a user is analyzed by constructing a simulation language recognition model, an interaction channel creation model and an instruction mapping model, and a simulation driving channel is established between industrial simulation software and the simulation language recognition model; standardized transmission and cross-platform data interaction of data and commands are realized, and instruction transmission and data sharing are facilitated; and further based on the instruction protocol conversion relationship, the operation command is converted to obtain the execution message, so that automatic setting of different software simulation instructions can be realized, the compatibility and integration problems among different simulation platforms are effectively solved, and the user experience is improved.

The invention relates to the technical field of satellite-borne edge computing and simulation, and provides a satellite-borne edge computing task unloading semi-physical simulation system. Comprising a physical satellite-borne edge computing device, a software virtual satellite-borne edge computing device, a ground user device, a space environment simulator, a container and cloud management base, a resource data distribution module and a task unloading scheduling module. The physical satellite-borne edge computing device and the software virtual satellite-borne edge computing device jointly construct a cloud side end cooperative computing cluster, the ground user device is used for initiating a computing task request, the space environment simulator is used for simulating spatial network characteristics, and the container and the cloud management base are used for achieving all-node unified management and control. The resource data distribution module is used for issuing and subscribing node resources and environment information, and the task unloading scheduling module is used for executing a task unloading decision. The problems that in the prior art, on-orbit verification cost is high, a pure software simulation environment is distorted, algorithm credibility is insufficient, and a satellite-borne data set is scarce are solved.

The invention relates to the technical field of industrial automation control, and provides a method and system for achieving online simulation of an HMI simulator, and the method comprises the steps: monitoring the starting and offline simulation process of an original HMI programming software simulator, and confirming that the original HMI programming software simulator completes the generation of a configuration file; receiving a mode switching instruction of a user through the mode switching interface; in response to the mode switching instruction, terminating the current simulator process; modifying a configuration file generated by the simulator, modifying an operation mode parameter in the configuration file from a first value representing offline simulation to a second value representing online simulation, and dynamically configuring a communication port parameter; the verification information of the configuration file is updated to ensure the legality of the file; and restarting the simulator, and loading the modified configuration file by the simulator so as to establish communication connection with an external PLC (Programmable Logic Controller) or instrument and enter an online simulation mode. On the premise of not depending on entity hardware, online communication and real-time joint debugging of the HMI simulator and the external equipment can be realized.

The invention provides a glass bottle lightweight forming process optimization system, belongs to the technical field of glass product production, and solves the technical problems that the existing lightweight glass bottle is low in forming efficiency, process parameters cannot be dynamically adapted and the like. Comprising a hardware execution module, a global data sensing module, a digital twinning optimization module, an enterprise-level cloud management module and a man-machine collaborative operation and maintenance module. The global data sensing module comprises an equipment three-dimensional information scanning and collecting unit, an equipment working state sensor network unit, an energy consumption and resource monitoring unit, a data transmission unit, a data storage unit and a carbon footprint accounting unit; the digital twinning optimization module comprises a virtual simulation unit, a software simulation optimization unit and a dynamic feedback optimization unit. According to the invention, an integrated process optimization system integrating an intelligent algorithm, digital twinning, green carbon reduction, flexible production, full-dimensional detection, predictive maintenance and man-machine collaboration is adopted, and efficient, accurate, green and flexible production of lightweight glass bottles is realized.

The invention relates to the technical field of electromagnetic measurement and state monitoring, and discloses a global state sensing system and method for an electromagnetic voltage transformer. The technical problems that in the prior art, data robustness is insufficient and actual working condition changes of a power grid are difficult to adapt due to the fact that accurate resonance circuit parameters are depended and a single calculation path is adopted are solved. According to the method, ferromagnetic resonance phenomena under various faults are simulated based on electromagnetic transient simulation, phenomenon data are obtained, and influence factors are analyzed to obtain influence rule data. And taking the rule data as input, and adopting a comprehensive solving method combining programming calculation, system structure chart calculation and electromagnetic transient software simulation to obtain a high-reliability state quantity time sequence. Based on the time sequence, a nonlinear model which takes loss into account and does not depend on precise resonant circuit parameters is derived, and explicit mathematical functions of primary current and transient overvoltage of the voltage transformer are obtained.

The invention discloses a digital chip verification method and device, electronic equipment and a computer readable storage medium, the method and device are applied to a verification system, the verification system comprises a software simulation platform and a hardware verification platform, and the method comprises the following steps: determining a to-be-tested code of a target digital chip; utilizing the software simulation platform to generate an excitation signal according to the to-be-tested code, and sending the excitation signal to a hardware verification platform; executing verification operation on the target digital chip by using the hardware verification platform according to the excitation signal to obtain a hardware verification result; when the hardware verification result has abnormal information, determining an abnormal node in the to-be-tested code, and debugging at the abnormal node by using a software simulation platform to obtain a software simulation result; and determining a final verification result of the target digital chip according to the hardware verification result and the software simulation result. By applying the technical scheme provided by the invention, more flexible and efficient digital chip verification can be realized.

The invention discloses a ship vertical stress prediction method based on POD modal decomposition, and aims to solve the problems that a traditional CFD method is high in calculation cost and low in solving efficiency and a pure data driving method lacks physical constraints. The method comprises the following steps: modeling discrete slices of a ship body, simulating different pitching and heaving working conditions through CFD software, and collecting vertical stress data; preprocessing and separating an average field and a pulsating field, and extracting a core characteristic mode and a time coefficient through POD mode decomposition; amplitude-coefficient mapping is established for time coefficient fitting, and target working condition parameters are input to obtain a corresponding time coefficient function; and reconstructing the pulsating field and superposing the average field, and integrating to obtain the total vertical stress. According to the method, calculation is simplified through modal dimension reduction, physical characteristics are reserved, rapid and accurate prediction of multiple working conditions is achieved, the method is suitable for ship seakeeping analysis and hydrodynamic performance calculation, and the engineering application efficiency is remarkably improved.

The invention discloses a software simulation and physical simulation collaborative cross-domain communication networking teaching simulation system, which belongs to the field of layout optimization and comprises a data interaction layer, a simulation engine layer, a teaching management layer and a display control layer. The data interaction layer is used for realizing software simulation and physical simulation data interaction through interface specification, a synchronization mechanism and mapping; the simulation engine layer is used for calculating loss driving dual-mode operation through modeling; the teaching management layer provides whole experiment process support; and the display control layer is used for displaying node and link states in real time, supporting dual-mode switching and generating and exporting a difference report. Seamless connection and dynamic linkage of software simulation and physical simulation are achieved, the problems that in a traditional teaching system, virtual and physical experiments are disjointed, and cross-domain scene simulation precision is insufficient are solved, and the intuition and effectiveness of cross-domain communication networking teaching are remarkably improved through a teaching closed loop of virtual rehearsal-physical verification-contrastive analysis.

The invention relates to the technical field of computers, and provides a synchronous task execution method and device, equipment and a medium, and the method comprises the steps: receiving a task queue set submitted by a plurality of user processes; obtaining a first execution task from a first task queue in the task queue set; under the condition that the first execution task is a synchronization task, simulating the first execution task based on a software language, and realizing a synchronization mechanism corresponding to the first execution task; and based on the synchronization mechanism and the scheduling rule, executing the execution task in the task queue set. The tasks in the task queues are scheduled through the synchronization mechanism corresponding to the software simulation synchronization task, so that the tasks are sequentially executed according to the expected sequence of the user process, the software executes the synchronization task, meanwhile, the task queues which do not meet the execution condition are switched in real time according to the scheduling rule in software simulation, and the execution efficiency is improved. And continuous waiting is avoided, and deadlock between the processes is further avoided when the multiple processes use the equipment at the same time.

The invention relates to the technical field of material thermal performance testing, in particular to a thermal conductivity testing method for a thermal conductivity interface material, and develops a qualitative thermal conductivity testing method for the thermal conductivity interface material based on graphics card hardware and baking machine software. Extreme working conditions are simulated by utilizing baking machine software, the heat dissipation efficiency of different heat conduction materials is quantitatively analyzed by monitoring the temperature change of a display card chip, and the method is better to implement and easy to judge for companies or individuals without professional heat conduction testing equipment, and has better guiding significance for practical application.

This application relates to the technical field of voltage regulation function testing for power banks. It discloses a voltage regulation function simulation testing system and method. This application constructs a voltage regulation function simulation testing system including a simulation clock and a simulation cycle counter. At the software level, it directly simulates the passage of time and the accumulation of charge-discharge cycles during long-term battery use based on user-configured test parameters. The core algorithm layer uses simulation time and / or the number of simulated full-charge cycles to simulate the charging voltage of the power bank over time and the accumulation of charge-discharge cycles, thus completing the voltage regulation function simulation test of the power bank. This method of completing the voltage regulation function simulation test of a power bank through software simulation algorithms greatly reduces the physical testing time required without changing the physical testing environment or replacing the tested object. This significantly shortens the testing cycle while ensuring the test results accurately reflect real-world usage scenarios and have high reliability.

The embodiments of the present application provide a chip simulation test method, device, equipment and system. The chip simulation test method includes: using a hardware simulation system to simulate the first part of the chip running the design program, and performing at least one sampling to obtain at least one sampling data; loading the at least one sampling data into the software simulation system; the software simulation system simulates the chip to continue to run part of the remaining program or all of the remaining program of the design program based on the at least one sampling data, so as to simulate the chip running the design program. The embodiment of the present application executes part of the program in the hardware simulation system, and the software simulation system continues to execute the design program based on the collected data, so that there is no need to actually execute the entire process of the design program. The hardware simulation system and the software simulation system can be combined to achieve efficient analysis and debugging, thereby providing good guidance for chip design.

The present application relates to the technical field of computer, and provides a synchronous task execution method, device, equipment and medium, the method comprises the following steps: receiving a task queue set submitted by multiple user processes; obtaining a first execution task from a first task queue in the task queue set; in the case that the first execution task is a synchronous task, simulating the first execution task based on a software language, realizing a synchronization mechanism corresponding to the first execution task; based on the synchronization mechanism and a scheduling rule, executing the execution tasks in the task queue set. The present application simulates the synchronization mechanism corresponding to the synchronous task by software to schedule the tasks in each task queue, so that each task is executed in turn according to the expected order of the user process, realizing the software to execute the synchronous task, and at the same time, the task queue that does not meet the execution condition is switched in real time according to the scheduling rule in the software simulation, avoiding waiting all the time, and further avoiding the deadlock between processes when multiple processes use the device simultaneously.

The application provides a process engine-based autonomous operation method and system for an interoperability verification task, a virtual-real combined simulation environment is constructed by including field equipment operation data, laboratory scaled component state information and a software simulation model, an actual operation scene of a road electromechanical equipment interoperability mechanism is simulated, an interoperability verification task is generated according to a preset verification requirement parameter set, a process engine is called to analyze the task and plan an execution process, the task is executed in the virtual-real combined simulation environment according to the execution process, message transmission data, state response data and time synchronization data in the equipment interaction process are collected in real time, interoperability verification results including interaction message integrity description, state response consistency record and time synchronization accuracy description are generated based on the message transmission data, the state response data and the time synchronization data, so that the verification task can be autonomously planned, and a comprehensive and real test environment is provided.

According to the HIC function verification method and verification device, an EMC module with mature functions is arranged in a FLASH space of a CPU subsystem on an original SOC verification platform, and the EMC module is configured as an external host of an HIC module, so that a function verification platform of the HIC module is rapidly established, and no extra chip is needed. After grammar checking and instantiation are carried out on an HIC function verification platform by adopting a VCS command, a VCSrun command is executed to load a simulation file and a test routine to execute function simulation, and a verdei command is used for checking a simulation result, so that RTL codes of an HIC module can be modified, re-edited and re-simulated when BUG or other errors occur, the whole process is carried out in software simulation, and the simulation efficiency is improved. The time consumption of the FPGA process is avoided, and the interaction function of the HIC module and the external host and the function interaction of the HIC module and the internal resources of the SOC system are verified at the same time in the real and complete SOC environment.

The invention relates to a chip verification method and system based on a double-FPGA architecture, and the method comprises the steps: deploying a verification platform on a first programmable logic device in a hardware circuit form, deploying a tested design on a second programmable logic device, and enabling the verification platform and the second programmable logic device to be interconnected through a hardware interface; the first programmable logic device comprises a control module, an excitation generation module, an expectation calculation module, an evaluation module, an excitation output module and a response input module; in response to external triggering, the control module jumps from idle to start, controls the excitation generation module to generate excitation, and transmits the excitation to the tested design through the excitation output module; the tested design generates a response signal based on excitation and transmits the response signal to the evaluation module through the response input module; the expectation calculation module receives an excitation calculation expectation result and transmits the result to the evaluation module; and the evaluation module compares the response with the expected result to generate a verification result. The method gets rid of software simulation dependence, shortens verification starting time, is close to a real chip use environment, and improves function verification reliability.

The invention provides a steering knuckle structure optimization method and device, a storage medium and an electronic device.The method comprises the steps that CAE simulation is conducted on an initial steering knuckle under multiple design working conditions, and a first coordinate result matrix is obtained through solving; determining a performance parameter set of the initial steering knuckle; adopting the performance parameter set to construct a design safety threshold value of structure optimization; respectively carrying out CAE simulation on the middle steering knuckle under a plurality of design working conditions, and solving to obtain a second coordinate result matrix; calculating according to the second coordinate result matrix and a design safety threshold to obtain a threshold solution domain; and adopting the threshold solution domain and the first coordinate result matrix to calculate and obtain a target coordinate matrix of mass distribution of the target knuckle after structure optimization. Through the embodiment of the invention, the technical problem that the structure of the steering knuckle cannot be optimized through software simulation in the prior art is solved, the design quality is minimized, the size of the steering knuckle is reduced, and the material and the cost of the steering knuckle are saved.

The invention provides a video coding and decoding method, device and system, electronic equipment, a medium and a product, and the method comprises the steps: calling a hardware coding and decoding interface corresponding to a target video format of a target video frame in response to a coding and decoding request triggered for the target video frame; and under the condition that the coding and decoding hardware corresponding to the hardware coding and decoding interface is in an unavailable state, generating a coding and decoding result of the target video frame through a software simulation program corresponding to the hardware coding and decoding interface. The hardware coding and decoding interface in the mode not only supports a hardware implementation mode, but also can perform processing based on a software simulation program under the condition that hardware is unavailable, so that the use flexibility of the interface is improved, and application and popularization are facilitated.

The invention relates to a design method of a double-end-pair resonance type surface acoustic wave filter, which comprises the following steps of: determining a core structure component of the double-end-pair resonance type surface acoustic wave filter, comprising a piezoelectric substrate, an input transducer, an output transducer and a reflecting grating; a two-dimensional model of a pair of interdigital transducers is established by using COMSOL software based on the wavelength of the interdigital transducers, the resonant frequency and the anti-resonant frequency are simulated by changing the thickness of the interdigital transducers, the appropriate film thickness of the interdigital transducers is selected, the simulation propagation velocity of the interdigital transducers is obtained according to the resonant frequency and the anti-resonant frequency corresponding to the thickness, and the simulation propagation velocity of the interdigital transducers is calculated. Extracting equivalent circuit model parameters of the double-end pair resonant surface acoustic wave filter, performing ADS software simulation, determining the number of reflecting grating fingers, performing experimental verification, obtaining an actual center frequency and an actual propagation speed, comparing the actual center frequency with a target center frequency, if the actual center frequency is not matched with the target center frequency, repeating the operation, and if the actual center frequency is not matched with the target center frequency, repeating the operation. And the actual center frequency coincides with the target center frequency.

The invention discloses a real-time simulation online automatic analysis system which comprises a man-machine interaction workstation, a real-time simulation machine, a tested object and a module development workstation. Wherein the man-machine interaction work station is used for providing a man-machine interaction environment for software simulation testing; the real-time simulation machine is used for realizing automatic judgment and analysis functions of a software simulation test; the model development workstation is used for developing a simulation model required by the real-time simulation machine; and the tested object is used as a test object for the real-time simulation machine to automatically judge and analyze the test criterion.

The application discloses a kind of based on deep learning's staged tension prestressed long-term loss prediction method, belong to deep learning field, this method solves the problem that traditional prestress determination method prediction result robustness is poor, including: based on standard drawing set and bridge design specification obtains bridge original data;Based on construction environment condition and concrete age, calculate concrete material attribute;Based on bridge original data and concrete material attribute, utilize finite element software to simulate the staged tension process of prestressed reinforcement under different working conditions, generate bridge prestressed reinforcement staged tension loss data set;Based on multilayer perception machine neural network, construct prestressed loss prediction model, based on prestressed loss prediction model, bridge prestressed reinforcement staged tension loss data set is handled, and the long-term loss prediction result that prestressed reinforcement is caused by shrinkage and creep is output.The application can effectively predict the stress loss of prestressed reinforcement, improve the robustness and accuracy of prediction.

The invention provides a high-throughput detection method and system for metal material performance and a storage medium, and belongs to the technical field of high-throughput detection of material performance, and the high-throughput detection method comprises the following steps: preparing a sample with a wedge-shaped or right trapezoid-shaped side surface; rolling the wedge-shaped or right trapezoid sample by adopting an asymmetrical rolling roller with a constant roller spacing; software is adopted to simulate the rolling process, the length and the width of the sample after actual rolling are compared with the length and the width of the sample after simulated rolling, the error value of the length and the width is calculated, and when the error value is smaller than a preset value, the positions of different rolling reduction of the sample after actual rolling are calibrated based on the result of simulated rolling; and sampling and detecting the performance based on the positions of different rolling reduction. The rolling reduction position of a sample with a wedge-shaped or right trapezoid side surface is calibrated by adopting a mode of combining an actual rolling process and a software simulation rolling process, so that textures or performances of different rolling reductions can be conveniently measured.

The present application relates to the wind power blade manufacturing technical field, specifically provide a kind of wind power blade with bonding angle mould manufacturing method, comprising the following steps: S1: obtaining the three-dimensional model of wind power blade shell mould;S2: using three-dimensional software simulation, glass fiber cloth and sandwich are laid to the three-dimensional model of blade shell mould;S3: after simulation is completed, respectively extracting suction surface layer simulation inner surface and pressure surface layer simulation thickness surface;S4: processing the suction surface layer simulation inner surface and pressure surface layer simulation thickness surface extracted and forming bonding angle mould three-dimensional model;S5: according to the bonding width requirement of suction surface and pressure surface, reserve design margin and trim bonding angle mould three-dimensional model;S6: according to bonding angle mould three-dimensional model making male die;S7: according to male die making bonding angle mould.The bonding angle mould in the scheme is strong in universality, does not occupy shell mould, can guarantee bonding quality, reduce material cost, shorten construction period.

The invention relates to a robustness optimization design method for building envelope reconstruction, and the method comprises the steps: carrying out the clustering of an initial building envelope reconstruction scheme set through employing a clustering algorithm, and extracting a representative reconstruction scheme which reflects main features; according to the method, a probability density function and a Markov chain are used for representing uncertain parameters influencing building performance, Sobol sequence sampling is used for sampling the uncertain parameters, uncertain scenes with high coverage are formed, building performance simulation software is used for simulating all building performance indexes of a representative transformation scheme in all the uncertain scenes, and the performance of the representative transformation scheme in all the uncertain scenes is simulated. All building performance indexes are integrated into a comprehensive evaluation index through an entropy weight method, and a scheme with the minimum relative deviation index is selected as a scheme with the most robust performance; according to the method, the coverage degree of uncertainty scenes and the accuracy of building performance index evaluation can be improved, the calculation efficiency is improved, and the building performance and robustness of the scheme are remarkably improved.

The invention relates to the field of electric power big data, in particular to a distribution network single-phase earth fault detection method based on a time sequence model. The method comprises the following steps: firstly, constructing a fault identification model based on Transform, wherein the fault identification model comprises a linear embedding layer, a Transform main body, a feature fusion module and a prediction block; and then a real acquisition data set and a simulation data set comprising a large amount of sample data are obtained through a data direct acquisition mode and a software simulation mode respectively. Carrying out two-stage training on the constructed fault recognition model by adopting the two types of data sets; wherein only a material simulation data set is adopted in the first round of training, and a mixed data set is adopted in the second stage. And finally, monitoring the single-phase earth fault in the power distribution network in real time by using the trained network model. According to the technical scheme provided by the invention, the problems of high positioning difficulty and low positioning precision of the single-phase earth fault in the existing large-scale power distribution network can be solved.

The invention provides a sewing machine, a needle bar crank of the sewing machine and a design method of the needle bar crank. The design method comprises the following steps: establishing a dynamic model of the needle bar crank in dynamic simulation software, and establishing a simulated mass center of the needle bar crank; setting a plurality of groups of parameter conditions, adjusting the simulated mass center according to the plurality of groups of parameter conditions in dynamics simulation software, and calculating the inertia force of the needle bar crank to the front bearing seat under different parameter conditions. The inertia force meeting the set condition is selected from the inertia force of the needle bar crank on the front bearing seat under the condition of different parameters, and the needle bar crank is designed according to the parameter condition corresponding to the inertia force. According to the technical scheme, the parameters of the mass center of the needle bar crank are simulated and adjusted through the dynamic simulation software, the parameter conditions enabling the inertia force of the needle bar crank mechanism to meet the set conditions are selected, the optimal needle bar crank can be rapidly designed according to the parameter conditions, then vibration and noise generated when the sewing machine works are weakened and improved, and the working efficiency of the sewing machine is improved. And the motion precision and stability of the sewing machine are improved.