128 results about "Simulation design" patented technology

The invention relates to the technical field of circuit design, in particular to a digital circuit simulation design method and system. The method comprises the following steps: identifying a design demand document, performing deep semantic analysis and demand constraint mining, and constructing a demand specification constraint parameter set; performing demand complexity evaluation and multi-level division according to the demand specification constraint parameter set, and constructing a basic circuit architecture design blueprint; circuit routing path planning is carried out according to the basic circuit architecture design blueprint, and a standardized circuit topology network is constructed; performing electric signal propagation simulation on the standardized circuit topology network, and performing global circuit adaptability adjustment to obtain a circuit topology design scheme; and carrying out an extreme condition simulation test based on the circuit topology design scheme, and carrying out comprehensive performance evaluation to obtain a circuit performance evaluation report. By deeply understanding the user demand intention, the circuit layout matched with the user demand is designed, and the overall circuit performance is improved.

The invention relates to the technical field of tire simulation design, in particular to a method, system and equipment for calculating contribution of tire parts to camber rigidity and a storage medium. The method is based on a finite element model and comprises the following steps: firstly, carrying out two-dimensional axial symmetry modeling and inflation analysis on a tire, rotating to generate a three-dimensional model, then establishing contact with a rigid road surface, applying rated inflation pressure and load, and carrying out steady-state rolling and camber working condition simulation to obtain reference camber rigidity comprising all parts; and then target parts such as a tread, a belted layer and sidewall rubber are selected, the Young modulus of the target parts is reduced to 0.01%-5% of a design value, the analysis is repeated on the premise that the Poisson's ratio of the target parts and other parts and boundary conditions are kept unchanged, and the camber rigidity of the target parts after degradation is obtained. The camber rigidity contribution value and contribution rate of the camber rigidity are calculated by comparing the difference value of the camber rigidity of the two working conditions and combining the occurrence frequency of the target component in the tire structure, and quantitative stripping of the camber rigidity influence of each component is achieved. According to the method, the component-level contribution spectrum can be quickly obtained on the premise of controllable errors, and an effective basis is provided for directional optimization design of the tire camber rigidity performance.

The invention provides an alkaline electrolytic cell temperature compound control method and system, a medium and equipment. The method comprises the steps that a full-process dynamic simulation model containing key process equipment meeting preset requirements in an electrolytic hydrogen production system is established; a feed-forward controller with current as input and feed-forward compensation amount as output is obtained through analysis of a full-process dynamic simulation model; based on the feed-forward compensation amount, the temperature of the electrolytic bath is stabilized at a set value under the change of the current I; a feedforward-cascade composite control system is constructed; and closed-loop control over the temperature of the electrolytic cell is completed based on a feedforward-cascade composite control system. According to the method, the feed-forward controller based on full-process dynamic simulation design is combined with cascade control, so that accurate lead compensation of wide-width current fluctuation is realized, the problem of response lag of single cascade control is effectively solved, and the dynamic response speed and the anti-interference capability of electrolytic bath temperature control are remarkably improved.

The invention provides a stay cable tensioning process simulation optimization design method and system based on finite element analysis, and the method comprises the steps: building a finite element model of a tower beam structure of a target cable-stayed bridge; the target cable-stayed bridge is a cable-stayed bridge constructed by a support method and provided with asymmetric leaning towers; based on the finite element model, stay cable tension process simulation of the tower beam structure under different jump tension sequences is carried out, and time-varying mechanical response of the tower beam consolidation system is obtained; and according to the time-varying mechanical response, the cable force effectiveness and the tower beam deformation continuity are taken as targets, a tension sequence is optimized through a multi-point coincidence approximation strategy, and simulation design of automatic iterative optimization is carried out. According to the stay cable tensioning process simulation optimization design method and system based on finite element analysis, the optimal jump tension sequence is solved in the simulation model, the evolution amplitude of the stress behavior of the tower beam in the stay cable tensioning bridge forming process is reduced, the evolution smoothness of the stress behavior is improved, and the phenomena of hard sudden change, discontinuity and even internal damage are prevented.

The invention discloses a landscaping landscape design method based on big data, and belongs to the technical field of landscape simulation design, and the method specifically comprises the steps: obtaining microclimate data of a target area and surrounding building environment data, and inputting the data into a dynamic microclimate simulation model to obtain a microclimate dynamic distribution diagram; identifying the position and the type of a microclimate discomfort area based on the distribution map, and generating a landscape design element set; carrying out overlay analysis on the element set and the distribution map, and adjusting the attribute and position of each element to form a preliminary design scheme; the preliminary scheme is input into a model to simulate microclimate distribution after implementation, and the difference degree of new and old distribution diagrams is calculated; and when the difference degree exceeds a preset range, iteratively adjusting the design elements and repeating the optimization process, and outputting a final scheme until the difference degree reaches the standard. According to the invention, dynamic coordination of landscape design and microclimate environment is realized.

The invention discloses a side face direct-insertion wiring terminal block structure and an elastic piece simulation design method of the side face direct-insertion wiring terminal block structure. Comprising an insulating shell, a conducting strip, a first elastic piece, a second elastic piece and a push block abutting against the elastic pieces, a wire can be inserted along the side face and clamped by a wire clamping block, and electricity conduction and disengagement prevention are achieved; the elastic piece is made of a metal material with resilience, and the elastic piece is bent to form a mounting part and a camber beam structure so as to provide stable clamping force. In order to optimize the performance of the elastic sheet, a simulation design method is adopted to establish an elastic sheet finite element model, set material attributes and constraint and loading conditions, carry out mesh refinement on a bending area and a wire clamping opening, start large deformation analysis and draw a force-displacement curve, so that the equivalent stiffness, the maximum stress and the deformation of the elastic sheet are obtained. Through simulation comparison of different design schemes, the optimal structure meeting the strength and resilience requirements can be determined. According to the invention, the stable conduction of the side plugging terminal and the predictable design of the performance of the elastic sheet are realized, and the assembly reliability and the design efficiency are improved.

The invention provides a SiC controller electromagnetic-thermal-force full-coupling simulation design method and system, and belongs to the technical field of power electronic device simulation design, and the method comprises the steps: constructing a bidirectional real-time coupling model of an electromagnetic field, a thermal field and a mechanical stress field; the irradiation dose is determined based on the expected working environment of the SiC controller, irradiation damage factors are introduced to correct SiC material parameters, and a bidirectional real-time coupling model is input; different temperature conditions and stress conditions are input into the bidirectional real-time coupling model for multi-working-condition simulation, performance parameters of the SiC material are output, and a quantitative relation model of the performance parameters, the temperature and the stress is established to reveal the performance degradation law of the SiC material; and based on the bidirectional real-time coupling model and the performance degradation law of the SiC material, taking the switching loss and the temperature rise as optimization targets, and carrying out collaborative optimization on parameters of the SiC controller. The simulation precision is improved, the performance of the SiC controller is optimized, the reliability is improved, and the service life is prolonged.

The invention relates to the technical field of simulation design, in particular to a design method and system based on a radar antenna, and the method comprises the following steps: resolving a phase error based on thermal deformation, analyzing a dynamic sidelobe variance in combination with displacement spectrum integration and covariance mapping, and generating a waveguide skeleton through electromagnetic energy mapping fluid damping; according to the method, thermally induced phase error data is introduced, the influence of structural deformation on the phase is accurately calculated, and meanwhile, calculation of dynamic group delay and group delay difference is combined, so that the phase correction accuracy is improved. Prediction of influence of structural deformation on electrical performance, data fusion of multiple physical fields and automatic process optimization are realized, design precision and efficiency are improved, limitation of single simulation software is avoided, factors such as material loss and gain evolution are accurately corrected in the design process, performance requirements of the high-frequency radar are met, and complex environment adaptability is improved.

The invention relates to the technical field of multi-objective optimization, in particular to a cable electrical performance simulation design method and system based on multi-objective optimization. The method comprises the steps of constructing a low-fidelity model and a high-fidelity model, fusing and evaluating features based on feature sensitivity, and performing staged evaluation by using a non-dominated sorting genetic algorithm. According to the method, exploration is accelerated by using a low-fidelity model at an optimized initial algebra, and hierarchical non-dominated sorting and high-fidelity evaluation refinement solution sets are applied in a convergence stage. Meanwhile, a constraint dominating principle and a dynamic penalty function are integrated, and it is ensured that the generated Pareto optimal solution set is strictly located in a feasible region. The efficiency bottleneck between high-precision simulation and optimization iteration is effectively solved, and the optimization efficiency of complex cable design and the reliability of a final scheme are remarkably improved.

The invention provides a simulation design method of an urban ecological corridor, which comprises the following steps: S1, collecting a multi-temporal thermal infrared remote sensing image of a city to be simulated and designed and preprocessing to obtain a core heat island node; s2, heat resistance surface construction is carried out based on different surface types, a heat transfer resistance surface is obtained, and the different surface types comprise a digital elevation model, an impervious surface index, a normalized vegetation index, a normalized building index, a normalized water body index and a gradient; s3, taking the core heat island node as a network end point, searching a communication path with the lowest resistance on a heat transmission resistance surface, and obtaining an urban heat island corridor; and S4, on the basis of the urban land utilization data, ecological lands of forests, wetlands, large parks and water bodies serve as candidate ecological source lands, ecological connection paths are constructed from the angle of ecological connectivity by adopting the S2 and the S3, and the urban ecological corridor is obtained.

This invention relates to the field of fabric printing simulation optimization technology, specifically a method and system for nylon fabric printing simulation design optimization based on finite element analysis. The method includes: acquiring microscopic images and physical property parameters of the nylon fabric; constructing a three-dimensional microscopic finite element model reflecting the yarn interweaving structure; selecting a printing area on the model surface and defining ink droplet ejection and ink fluid property parameters; using these parameters as initial conditions, employing a fluid-structure coupling algorithm to simulate the dynamic process of ink droplet impact, wetting, and penetration, acquiring three-dimensional ink distribution data and fabric stress-strain response data; extracting printing quality characteristic indicators, comparing stress-strain data with fabric deformation thresholds, and evaluating the impact of printing on fabric structural integrity; and generating an optimization and adjustment scheme for printing process parameters based on the evaluation results. This method improves simulation accuracy, achieves simultaneous evaluation of printing quality and fabric structural integrity, and optimizes printing process design.

A common data model is created for an automation system, which includes an ontology of semantic relationships between entities of the automation system captured from multiple simulation tools based on a simulation design of the automation system. Artifacts, such as simulation and automation artifacts may be attached to corresponding entities in the common data model. New automation artifacts may be generated utilizing logic definitions from the simulation artifacts in the common data model. Changes to an artifact may be propagated to affected artifacts in the common data model utilizing dependencies defined by the semantic relationships. A snapshot of the common data model, including the newly generated or modified artifacts are committed to a version control system. A continuous integration execution engine executes virtual commissioning for validating each automation artifact against a simulation environment in a simulation of the automation system, based on the commit of the common data model.

The invention discloses an engine ventilation process simulation calculation method based on three-dimensional iteration calibration, and belongs to the technical field of engine simulation data processing. The invention discloses an engine ventilation process simulation calculation method based on three-dimensional iteration calibration. The method comprises the steps that a one-dimensional simulation model and a three-dimensional simulation model of an intake and exhaust pipe system of an engine are constructed; same parabolic pressure wave boundary conditions are applied to air ports of the one-dimensional simulation model and the three-dimensional simulation model; calibrating the one-dimensional simulation model by iteratively adjusting structural parameters of key pipe sections of the one-dimensional simulation model by taking pressure waveforms of air cavities and header pipe nodes in the three-dimensional simulation model as references; and applying the calibrated one-dimensional simulation model to the one-dimensional model of the whole engine. By adopting the engine ventilation process simulation calculation method based on the three-dimensional iteration calibration, the problem that the whole machine simulation design efficiency is low due to the fact that the coupling relation is complex and the calculation time is long in the existing engine three-dimensional ventilation process can be solved.

The application discloses a simulation design method for energy-saving reconstruction of a permanent magnet synchronous reluctance motor, and aims to solve the problem of low matching degree of the existing reconstruction method and actual working conditions and limited energy efficiency improvement. The method collects and analyzes full working condition parameters, constructs a three-dimensional magnetic circuit-structure coupling simulation model, identifies key loss parameters and sets multi-dimensional constraint conditions, adopts multi-parameter collaborative optimization and an improved branch and bound method for optimization, and performs engineering adaptation and verification after screening the optimal scheme through simulation verification. The application realizes optimal energy consumption of the motor in full working conditions, improves the motor efficiency by more than 15% after reconstruction, and ensures that the power factor is not less than 0.92, and meanwhile, the reconstruction cost and resource utilization rate are considered, different types of motors are adapted, and scientific and efficient technical support is provided for large-scale energy-saving reconstruction of the permanent magnet synchronous reluctance motor.

The present application belongs to the technical field of nuclear fuel simulation design, and aims at the problem that the interface reaction between U3Si2 fuel particles and Al matrix of the existing U3Si2-Al fuel is prone to occur at high temperature, and provides a U3Si2-Cu dispersion type nuclear fuel with interface stability at high temperature and a simulation construction method, a U-Si-Xe-M quaternary potential function is developed by a gradient optimization algorithm of multi-objective simulated annealing combined with a MEAM model, wherein M is any one of Al, Cu, Mg and W, and atomic scale information of irradiation defects and fission gas at the interface in the U3Si2-M fuel is obtained by means of calculation simulation, and finally the U3Si2-Cu dispersion type nuclear fuel is obtained. The U3Si2-Cu dispersion type nuclear fuel provided by the present application has high interface stability at high temperature.

The invention relates to the technical field of spaceflight, in particular to a design method and device of a spaceflight optical load and a computer program product. The design method of the spaceflight optical load comprises the following steps: determining the emphasis dimension of a to-be-designed optical load according to a received task demand, and determining an optical weight, a mechanical weight and a thermal control weight based on the emphasis dimension; determining a performance optimization objective function according to the optical weight, the mechanical weight, the thermal control weight, the optical index, the mechanical index and the thermal control index; and performing simulation design on the optical load based on a simulation model and the task demand, and optimizing the simulation design at least based on the performance optimization objective function.

The present application relates to the technical field of aircraft engine simulation design, and particularly relates to a method for estimating aircraft engine thrust based on flight parameters. The aircraft engine thrust estimation method provided by the present application estimates the aircraft engine thrust from the perspective of flight parameter data, in combination with aircraft engine design parameters, taking into account task requirements and adopting the finite element method. Compared with the traditional scheme based on data, i.e., relying on a large amount of flight parameter data and combining statistical rules to obtain the aircraft engine thrust spectrum, the aircraft engine thrust estimation formula derived based on the physical formula has more reliable physical meaning and physical constraints, the distortion degree of the obtained aircraft engine thrust spectrum caused by data sampling error is smaller, the trend and characteristics are more in line with the real rules, and the aircraft engine thrust spectrum has more guiding significance and prediction value, thereby providing strong theoretical support for aircraft engine thrust spectrum prediction.

The invention is suitable for the technical field of luggage design, and particularly relates to a luggage pull rod dynamic impact strength simulation design method, which comprises the following steps: ensuring the reliability of a design result by obtaining a structure attribute set, a historical attribute set and a design attribute set of a target design luggage; modeling simulation processing is carried out based on the structure attribute set and the historical attribute set, accurate recognition of the high strain energy density area and the geometric weak position of the pull rod is achieved, a feature response set containing the geometric information and mechanical response data of the weak area is obtained, and a clear target spot is pointed out for optimization design; according to the characteristic response set and the design attribute set, variable density lattice structure generation processing is carried out on the high strain energy density area, a traditional empirical design and repeated physical test mode is replaced, the research and development period is greatly shortened, the trial and error cost is reduced, the dynamic impact strength and structural stability of the luggage pull rod are improved, and the service life of the luggage pull rod is prolonged. And reliable technical support is provided for high-performance, light-weight and low-cost design of the luggage pull rod.

The invention discloses a nanoindentation simulation design-based material indentation depth calibration method, device, equipment and medium, and relates to the technical field of material mechanics characterization, and the method comprises the steps of establishing a continuous gradient material finite element geometric model corresponding to a Brookfield indenter nanoindentation experiment, and constructing a continuous gradient material constitutive model with an elastic modulus continuously changing; combining the two models to perform indentation simulation at a plurality of preset maximum indentation depths to obtain simulation results; calculating an equivalent elastic modulus based on a load displacement curve in a simulation result to determine a material indentation depth corresponding to a preset maximum indentation depth of the indenter; and establishing a quantitative mapping model between the preset maximum indenter indentation depth and the material indentation depth so as to map a test result of the Brookfield indenter nanoindentation experiment at the preset maximum indenter indentation depth to the corresponding material indentation depth according to the quantitative mapping model. And the nanoindentation test result can be accurately mapped to the specific depth position of the continuous gradient material.

The invention relates to the technical field of tire finite element simulation design, in particular to a method, a system, a medium and a software product for calculating contribution of a tire part to radial rigidity. The method comprises the steps that a two-dimensional tire finite element model is established, inflation pressure is applied, a three-dimensional model is generated, a load is applied, and the radial rigidity of a complete tire is calculated; the Young modulus of the target part is reduced to 0.01%-5% of a design value, simulation is repeated, and rigidity after modification is calculated; and calculating a rigid contribution value and a contribution rate of the component through a difference value between the two values. The system comprises a finite element modeling module, a simulation module, an attribute adjustment module and a rigidity analysis module. On the premise of ensuring the continuity of a simulation structure and the consistency of working conditions, the method can accurately peel off the contribution of the component, is suitable for different tire structures, and has the advantages of high precision, high universality, low cost and the like.

The present application relates to compressed air energy storage technology field, specifically to a kind of gas storage cavern surrounding rock compression deformation simulation design method, equipment and medium.The present application is simulated surrounding rock deformation by two parts of bearing layer and deformation layer, the controllable deformation value generated by simulated lining layer is converted into the deformation value measurable to deformation layer, so as to facilitate to simulate the specified deformation of surrounding rock under the action of internal pressure by adjusting the opening parameter of deformation layer;When designing, given lining target deformation is taken as control target, the error of opening rate or the error of actual maximum compression deformation is judged to preliminarily screen out the opening type of deformation layer that can realize lining target deformation, then whether the opening of deformation layer is basically closed under the action of dead weight and under the action of maximum internal pressure P is checked, the opening type that finally meets the design requirement is screened out, so that the simulation test device simulates the pressure-bearing deformation capacity of surrounding rock under given condition, and the adjustment amount is small.

The application relates to the field of simulation design of switching power supplies, and particularly discloses a simulation design method of a switching power supply, which comprises the following steps: S1, establishing a topological structure model of the switching power supply, including a power conversion circuit, a control circuit and a feedback loop; and S2, constructing a mathematical model of the switching power supply according to circuit parameters and component characteristics; the application establishes a complete topological structure model covering the power conversion circuit, the control circuit and the feedback loop, and constructs a mathematical model based on the circuit parameters and the component characteristics, so that comprehensive coverage from a system architecture to theoretical characteristics is realized. This process not only provides an accurate bottom layer description for subsequent simulation, but also reveals coupling relationships among key parameters through mathematical abstraction, so that potential performance bottlenecks can be predicted at the initial design stage, global efficiency loss caused by local optimization in the traditional trial-and-error method is avoided, and the foresight and scientificity of the design are significantly improved.

The invention discloses a high-temperature-resistant low-dielectric rectangular groove type diamond copper-aluminum nitride composite functional substrate and a multi-physical field design method thereof, and belongs to the technical field of functional materials. The substrate comprises an aluminum nitride plate body, and a plurality of square or rectangular groove bodies are formed in the surface of the aluminum nitride plate body in an array mode. Each groove body is filled with a diamond copper composite material; wherein an active metal brazing layer is arranged between the diamond-copper composite material and the inner wall of the tank body. The high-temperature-resistant, low-dielectric and high-heat-conducting performance collaboration is achieved, the research and development cost and period are reduced through the simulation design, and the high-temperature-resistant and high-temperature-resistant composite material is suitable for high-frequency

The invention discloses a distribution network distance protection parameter optimization method and system based on multi-factor coupling simulation, and relates to the technical field of parameter optimization, and the method comprises the steps: constructing a distribution network simulation model of a target distribution network, carrying out the multi-factor coupling simulation design, and obtaining a multi-factor coupling scheme; traversing the multi-factor coupling scheme to perform batch simulation to obtain a simulation feature set; by taking the simulation feature set as input and taking a condition that a distance protection action result accords with an expected protection action as a target, carrying out optimization solution on a variable setting parameter of a distance protection element; and monitoring and obtaining the real-time state of the distribution network, and dynamically adjusting the variable setting parameter of the distance protection element according to an optimization solution result. The technical problem that existing distribution network distance protection parameter optimization depends on an empirical formula or a simplified model due to the fact that the multi-factor coupling effect is not fully considered, and consequently optimization result robustness and adaptability are insufficient is solved.

The invention relates to the technical field of tire simulation design, in particular to a method, a system and equipment for calculating contribution of a tire part to cornering rigidity and a storage medium. The method comprises the following steps: based on a tire finite element model, firstly carrying out inflation analysis on a two-dimensional axial symmetry model, generating a three-dimensional tire model, and completing steady-state rolling and lateral deviation working condition simulation under a rigid road surface and a rated load condition, so as to obtain the overall lateral deviation rigidity CF alpha1 of the tire; then target parts such as a tread, a belted layer and sidewall rubber are selected, the Young modulus of the target parts is reduced to 0.01%-5% of a design value, the target parts are approximately degraded into mechanical invalid components in the lateral deviation working condition, simulation is repeated on the premise that the boundary condition and the load are kept unchanged, and new lateral deviation rigidity CF alpha2 is obtained. By comparing the deviation rigidity difference values before and after degradation and normalizing according to the occurrence frequency of the components, the contribution value and contribution rate of the components to the deviation rigidity are calculated, and quantitative stripping and sorting of the rigidity contribution of the tire components are achieved. The method is simple, efficient and suitable for lateral deviation performance analysis and key component optimization design of tires of different structures.

The invention discloses a dynamic submarine cable armor layer loss optimization method and device, electronic equipment and a storage medium, and belongs to the technical field of submarine cable simulation design, and the method comprises the steps: obtaining structural geometric data, load operation data and armor layer to-be-selected parameters of a dynamic submarine cable, and constructing a three-dimensional model comprising a three-phase conductor, a shielding layer and an armor layer; establishing an electromagnetic coupling simulation model at a reference temperature, setting excitation, temperature and grounding boundaries, and completing gridding; and performing multi-physical field solution on different parameter combinations, analyzing loss distribution, and selecting an optimal parameter combination meeting a low loss standard as an armor layer loss optimization result according to a total loss change trend. Through the implementation of the method, the problems that in the prior art, due to the fact that a submarine cable complex spiral structure is simplified into an equivalent model, induced current vectors and coupling logic are distorted, loss calculation deviation is large, and precise optimization cannot be supported can be solved.

The application relates to a dual-gas response organic transistor sensor simulation design and a gas concentration decoupling method thereof, and belongs to the field of organic semiconductor device simulation and electronic technology. The method aims at the problem that existing gas monitoring technology cannot simultaneously consider low cost, room temperature operation and multi-component synchronous detection, and realizes the synchronous response and concentration accurate detection of a single organic transistor device to dual-component gas through the following steps: selection of gas-sensitive functional materials and their gas response key parameters, simulation design and electrical performance analysis of the dual-gas response organic transistor sensor, calculation of device electrical characteristic parameters and sensitivity, dual-gas signal data preprocessing and data set construction, dual-gas signal decoupling model construction and dual-gas concentration detection. The method improves the sensor integration and design efficiency, and realizes high-precision decoupling of mixed gas by using an algorithm, thereby providing technical support for the development of a sensing-storage-computing integrated intelligent gas sensing terminal related to gas monitoring of power system equipment.

This invention discloses a method, apparatus, and storage medium for end-to-end collaborative chip design, comprising: sequentially invoking various execution-type intelligent agents based on a task execution graph, and sending chip design sub-tasks to matching execution-type intelligent agents; the execution-type intelligent agents interacting with a cloud-native cross-level performance modeling platform through a communication layer to collaboratively execute design sub-tasks to obtain chip simulation results; and a decision-type intelligent agent evaluating the simulation results to obtain evaluation results, and determining the chip design scheme based on the evaluation results. The intelligent agent system achieves an automated end-to-end simulation design process for chips. The introduction of a communication layer enables rapid integration with the cloud-native cross-level performance modeling platform, significantly reducing adaptation costs. Furthermore, the decision-type intelligent agents automatically evaluate simulation results and automatically determine chip design schemes, significantly improving the automation and intelligence level of collaborative design.

The invention discloses a geotechnical engineering multi-mode simulation design method and a model test loading device, which solve the problems of single loading mode, low control precision and poor adaptability of the existing device, and the method comprises the following steps: establishing a pile-soil system wave equation, setting boundary initial conditions, correcting a vibration equation, deriving a displacement response curve, carrying out PID feedback regulation, and carrying out multi-mode simulation design on the basis of the parameters of Kp = 1.8, Ki = 0.4 and Kd = 0.02. A steady state is reached within 2s, the loading error is less than 3%, a complete mathematical model is constructed, the device comprises a base, a driving device and the like, and the base is adaptive to a multi-specification model box; the driving device ensures stable precision; the loading assembly uses an adjustable coupling and a modularized end, each part is modularized, and an upper computer is supported to control parameters and memories. Compared with the prior art, the invention has the advantages of multi-mode loading, high-precision control, strong adaptability and efficient operation, meets the requirements of complex rock and soil tests, and provides support for related mechanism research.

This invention provides a numerical simulation method, medium, and system for the quality characteristics of cigarette filter rods, belonging to the field of digital design technology for the product characteristics of cigarette filter rods. The numerical simulation method for the quality characteristics of cigarette filter rods includes six steps: preparation of a reference filter rod, acquisition of quality characteristic parameters, establishment of a mathematical model of the reference filter rod, numerical simulation design of the new product, preparation of the new product, and numerical verification of the new product. The numerical modeling of the reference filter rod, the numerical simulation design of the new product, and the numerical verification of the new product can be applied to a computer-aided design system. The computer-aided design system includes a numerical modeling unit and a simulation design unit, and can realize functions such as input, output, storage, and calculation. This method and processing system belong to the digital field and can solve the problems of existing methods, such as large sample preparation workload, very low efficiency, and limited data, which cannot meet the needs of digital design of cigarette products.