143 results about "Parameter design" patented technology

The invention relates to the technical field of grouting construction parameter design, in particular to a large-section tunneling type rectangular tunnel grouting construction parameter optimization design method and system.The method comprises the following steps that modeling is conducted according to design sizes of a rectangular jacking pipe, a pipe joint and a stratum to obtain a rectangular jacking pipe model, a pipe joint model and a stratum model; wherein a construction gap is formed between the pipe joint model and the stratum model; setting slurry simulation parameters and contact surface simulation parameters; setting different hole site slurry injection ratios, performing slurry filling simulation through SPH according to the set different hole site slurry injection ratios, so as to simulate the process of filling the construction gap with slurry and filling the construction gap, and obtaining a corresponding simulation result; and selecting different hole site slurry injection ratios with the shortest time for filling the construction gap and smooth circumferential pressure distribution curve from the simulation result, and outputting the different hole site slurry injection ratios. According to the method, adverse disturbance to the stratum can be reduced to a certain extent through optimization.

The invention provides a fan tuned mass inerter damper structure and a parameter design method, and belongs to the field of ocean engineering vibration reduction. The structure comprises an engineering structure, an outer sleeve, a roller, an inner sleeve, an additional mass block, four damper spring units and four inerter system units. The engineering structure is fixed with the external sleeve, and a guide rail is formed between the engineering structure and the external sleeve; the additional mass block is arranged in the center of the inner sleeve, the four inerter system units are connected with the damper spring unit and located on the same plane, the other ends of the four inerter system units are connected with the inner wall of the inner sleeve, and each inerter system unit comprises an inerter system spring, a damping unit, a first inerter unit and a second inerter unit. According to the structure, translation-rotation conversion is achieved through the inerter unit, efficient inertia synergy is achieved with small physical mass, and the load of a draught fan is relieved; the four units are symmetrically arranged to ensure omnidirectional vibration suppression; the roller guide rail reduces friction and improves response sensitivity and energy consumption efficiency; according to the parameter design method, parameters are accurately optimized, and broadband vibration reduction performance and engineering reliability are guaranteed.

The invention provides a parameter design method for a multi-voltage rectification LCC converter, and the method comprises the steps: building a voltage precise mathematical model of a resonant cavity parallel capacitor through employing a fundamental wave equivalent method based on the condition that output capacitors of the multi-voltage rectification LCC converter and a multi-voltage rectifier participate in resonance; the gain of the voltage-multiplying LCC resonant converter is modeled through a voltage accurate mathematical model of a resonant cavity shunt capacitor; determining the number of rectifier bridges, the turn ratio of a transformer and the capacitance value of a rectification voltage-multiplying capacitor according to the voltage of the parallel capacitor of the resonant cavity and the gain of the voltage-multiplying LCC resonant converter; and determining values of the resonant cavity series-parallel capacitor and the resonant cavity inductor according to the capacitance value of the rectification voltage-multiplying capacitor. According to the method, analysis and calculation of the output filter capacitance are incorporated into parameter design of accurate modeling, a scheme for selecting the number of the voltage doubling rectifier bridges is given, and the size can be reduced and economic benefits can be increased under the condition that working condition requirements are met.

The invention belongs to the technical field of bridge vibration reduction, and discloses a TMD parameter design method for modal dense bridge multi-modal vortex vibration control. Modal analysis is carried out on the target bridge, and modal frequency, vibration mode and modal mass where vortex vibration possibly occurs are extracted; then based on a modal shape amplitude threshold, screening significant extreme points of each order of modal, calculating the number of the significant extreme points, and determining the priority of TMD design according to the number from small to large; for a mode with the number of extreme points being 1, the TMD is installed at the unique position; for a mode with the number of extreme points exceeding 1, the TMD mass is split and arranged at symmetrical positions meeting the mode decoupling condition, and therefore mode coupling caused by improper installation positions is avoided. And finally, determining the frequency ratio and the damping ratio of each TMD based on a Den Hartog empirical formula. The method does not need a complex optimization algorithm, is simple in design process, and is suitable for engineering practice; and modal coupling can be effectively inhibited, and the multi-modal vortex vibration control efficiency is improved.

The application provides a kind of mixed laminar flow control tail optimization design method of comprehensive multi-condition and multi-constraint, comprising the following steps: according to the optimization target and constraint condition of multiple actual conditions of vertical tail, the optimization mathematical model of vertical tail is established;Design variables are constructed;The design variables include vertical tail geometric parameter design variables and vertical tail suction coefficient design variables;Based on the vertical tail reference configuration, the optimization design space of each design variable is determined;Optimization design is carried out.The application has good multi-condition and multi-constraint processing capability, can consider the balance of friction resistance and pressure difference resistance in optimization design, while ensuring that the stall characteristics of vertical tail do not deteriorate during take-off and landing stage, and the laminar flow range of airfoil does not change abruptly under small side slip state, and can consider various complex engineering constraints, thereby effectively improving the drag reduction effect of mixed laminar flow control tail, and making the design result more in line with actual engineering needs.

The invention relates to the technical field of cutting process parameter design, in particular to a cutting process parameter design method, device and equipment and a storage medium, and the method comprises the steps: firstly obtaining a plurality of to-be-measured laser powers, calling a pre-trained target temperature prediction model to predict the plurality of to-be-measured laser powers, and obtaining a plurality of predicted temperatures; simulation operation is executed based on the multiple predicted temperatures to construct a first training sample set, an initial cutting parameter prediction model is constructed, the first training sample set is used for conducting multi-round iterative training on the initial cutting parameter prediction model to obtain a target cutting parameter prediction model, multiple to-be-measured temperatures are obtained, and multiple to-be-measured temperatures are obtained; and calling the target cutting parameter prediction model to predict each to-be-measured temperature to obtain a plurality of initial cutting process data sets, and screening in the plurality of initial cutting process data sets by adopting an SAC algorithm to obtain an optimized cutting process data set so as to realize efficient prediction and optimization of the critical cutting depth and the cutting force.

This invention discloses a method and system for frequency oscillation transfer analysis under multi-machine islanding. The method includes: establishing a transfer function; substituting the operating parameters of each operating condition into the transfer function; if stable, determining whether it is stable; if stable, it indicates that the system on the second VSG side is stable; if unstable, jumping to S3.1 to determine the cause of frequency oscillations on the second VSG side and the first VSG side; if unstable, it indicates that the frequency oscillations on the second VSG side are caused by insufficient stability margin of the second VSG side itself. The advantage of this invention is that it more accurately explains the cause of low-frequency oscillations in the system, thereby guiding the design of virtual synchronous machine controller parameters.

This invention belongs to the field of structural design and simulation testing technology for renewable energy equipment in the marine sector. It discloses a synchronous similarity design method and system for scaled-down towers. This method introduces an innovative composite penalty fitness function to drive a genetic algorithm for automatic optimization, thereby completing the segmented parameter design of the scaled-down tower in a single, high-precision manner. It synchronously ensures a high degree of similarity between the model and the actual model in key dynamic characteristics (first-order natural frequency) and accurate reproduction in three-dimensional geometry, while strictly complying with all engineering manufacturing constraints. This invention significantly improves optimization efficiency, achieves excellent design accuracy and completeness, and has strong engineering applicability.

The invention provides a ship transition skew design system and method, and the system comprises a data acquisition and analysis module which obtains a ship three-dimensional design model, and automatically extracts the geometric information of a plate and the process attribute information of a butt joint boundary from the ship three-dimensional design model; the rule management database is used for storing transition skew discrimination rules and a design rule base; the judging module is used for judging a target docking boundary needing to be provided with a transition slope according to a judging rule; the parameter design module is used for automatically calculating and generating corresponding transition skew geometric parameters for each target docking boundary; and the model updating module is used for modifying the ship three-dimensional design model according to the transitional oblique geometric parameters. The system integrates discrimination rules and design specifications, and reduces the dependence of design on designers, reduces errors caused by human experience and improves the design quality when the transition skew parameters are judged and calculated.

The invention relates to the technical field of computer aided design, in particular to a cold chain refrigeration system parameter design optimization system which comprises the steps of extracting temperature difference, flow velocity and pressure offset characteristics, recognizing abnormal point locations and determining regulation and control sections, calculating change rate overlapping areas to form a sorting map and a matching device response deviation obtaining and updating component. And outputting a structure combination verification result to form an optimized arrangement diagram group. According to the method, high-frequency offset characteristics of temperature difference, flow velocity and pressure sudden change are extracted, abnormal points are recognized through synchronous trend comparison, a sequencing map is output through coincidence measurement and calculation of liquid velocity slope, temperature drop gradient and load change, action stepping reasonability is evaluated according to throttling response deviation, device recognition and structure regulation and control verification are completed, and device recognition and structure regulation and control verification are completed. Accurate positioning and structure optimization of response mismatching sections are achieved, and the regulation and control efficiency and operation stability of the system under multi-parameter coupling are improved.

The invention relates to the technical field of power electronics, and discloses a two-way wireless electric energy transmission system based on a decoupling coil and a parameter design method, and the transmission system comprises a transmitting end coil and a double-receiving end coil which is parallel to the transmitting end coil and is completely opposite to the transmitting end coil. The parameter design method comprises the following steps: designing a constant voltage compensation capacitor parameter; designing a constant-current compensation inductance parameter and a constant-current compensation capacitance parameter; and designing emission compensation inductance parameters and emission compensation capacitance parameters. According to the invention, the technical problems of inconsistent output characteristics and large regulation and control difficulty of traditional double-channel wireless charging are solved, the charging efficiency and the electric energy quality are improved, the applicability in the scene of simultaneous charging of multiple devices is expanded, and the method has significant engineering application value.

This invention discloses a comprehensive parameter design method for the cross-section of long-span highway tunnels. Using tunnel flatness ratio and equivalent initial support strength as two variables, and with tunnel safety and economy as dual objectives, it employs numerical simulation and regression analysis to establish evaluation indicators and objective functions for flatness ratio and initial support. Based on survey results, the range of variables for flatness ratio and equivalent initial support strength is determined. Safety constraints are defined according to safety requirements. A non-dominated sorting genetic algorithm is used to perform optimization calculations within the specified variable range and constraints to obtain mutually suitable tunnel cross-section flatness ratio and equivalent initial support strength. Furthermore, the equivalent initial support strength is transformed into support form and parameters, ultimately forming the optimal initial support parameters for long-span tunnels. This method overcomes the shortcomings of traditional long-span highway tunnel design methods that only consider safety or economy as a single objective, and solves the problem of relying on manual experience to determine the optimal flatness ratio and initial support parameters.

The invention belongs to the technical field of oil casings, and discloses a method and device for calculating the design tolerance of special thread parameters of oil casings, and the method comprises the steps: obtaining the thread parameters of a plurality of randomly extracted special thread oil casings after machining, after surface treatment, after factory end screwing-on, and after oil field commodity inspection; respectively calculating sample standard deviations of thread parameter variations; according to the sample standard deviation, calculating the total standard deviation of thread parameter variation caused by surface treatment, factory end screwing-on and oil field commodity inspection; calculating the width of a design tolerance zone according to the total standard deviation after computer processing, surface treatment, factory end screwing-on and oil field commodity inspection, and calculating the design tolerance according to the width of the design tolerance zone; and taking the calculated design tolerance as a machining parameter of the special threaded oil casing. According to the invention, a series of acceptance problems caused by large difference between the special thread parameter commodity inspection acceptance tolerance of the oil casing and the existing design tolerance of a factory can be solved.

The invention discloses a power amplifier parameter design method and device, a storage medium and electronic device.The power amplifier parameter design method comprises the steps that in response to a design request, performance indexes and constraint conditions of a power amplifier are obtained; constructing an analytic mechanical model for describing the power amplifier according to the performance indexes and the constraint conditions; constructing a multi-objective cost function based on the analytic mechanical model; performing iterative optimization on the multi-target cost function by adopting an optimization algorithm to obtain a group of target design parameters; and outputting the target design parameters for guiding circuit implementation of the power amplifier. According to the invention, global collaborative optimization of the performance of the power amplifier can be realized.

The application belongs to the technical field of structure parameter design of the joint between the aircraft landing gear and the aircraft body, and particularly relates to a structure parameter design method of the joint between the aircraft landing gear and the aircraft body, comprising the following steps: determining the structure optimization parameters of the joint between the aircraft landing gear and the aircraft body and their upper and lower limits; calculating the target mass of the joint between the aircraft landing gear and the aircraft body based on the structure optimization parameters; calculating the optimization strength margin of the joint between the aircraft landing gear and the aircraft body based on the structure optimization parameters; under the condition that the optimization strength margin is greater than the constraint strength margin, seeking the structure optimization parameters that minimize the target mass within the upper and lower limits of the structure optimization parameters as the structure design parameters; normalizing the structure design parameters to obtain the structure processing parameters of the joint between the aircraft landing gear and the aircraft body; calculating the final strength margin of the joint between the aircraft landing gear and the aircraft body based on the structure processing parameters, and re-normalizing the structure design parameters when the final strength margin is less than the constraint strength margin.

This invention discloses a robust design method for technical parameters of passive suspension systems aimed at performance optimization. It can robustly design two types of suspension system parameters—stiffness coefficient and damping coefficient—to cope with changes in vehicle weight. Specifically, the method constructs a four-wheel vehicle passive suspension system model and uses an improved Harris-Eagle optimization algorithm to search for the suspension stiffness coefficient and damping coefficient under varying vehicle weight conditions, thereby ensuring a balanced balance between vehicle ride smoothness and handling stability. This invention is a technical parameter design method for four-wheel vehicle passive suspension systems that does not rely on trial and error by technicians to optimize the technical parameters of the passive suspension system. More importantly, this invention considers the uncertainty of vehicle weight during actual driving; the designed parameters are optimal under different vehicle weight variations, exhibiting a high degree of robustness.

The invention discloses a wireless electric energy transmission system with dynamic and static compatibility and a parameter design method, and relates to a wireless electric energy transmission system and a parameter design method. The invention aims to solve the problem that only one of the design of a static wireless charging system and a dynamic wireless power supply system can be realized at present. The wireless electric energy transmission system comprises an SDDS type dynamic and static compatible receiving end, a static wireless electric energy transmission system and a dynamic wireless electric energy transmission system. The SDDS type dynamic and static compatible receiving end is used for receiving power supplied by the static wireless power transmission system and the dynamic wireless power transmission system; the static wireless power transmission system is used for supplying power to the SDDS type dynamic and static compatible receiving end; and the dynamic wireless power transmission system is used for supplying power to the SDDS type dynamic and static compatible receiving end. The invention belongs to the technical field of wireless power transmission.

The invention provides an optimal phase shift parameter design method based on a switch multiplexing type multi-resonant switched capacitor, and the method comprises the steps: determining a control parameter combination according to the value interval of a preset phase shift ratio and a preset frequency ratio; determining resonance network hardware parameters according to the preset target equalization power and the preset resonance frequency; according to a preset soft switching constraint condition, verifying a parameter set composed of all control parameter combinations and resonance network hardware parameters; if the parameter set meets the preset soft switching constraint condition, taking the parameter set as an element of a feasible solution set; screening a parameter set with the minimum root mean square value of the resonance current according to the feasible solution set; and according to the parameter set with the minimum root-mean-square value of the resonance current, screening the parameter set with the minimum peak value of the resonance current as an optimal working point. According to the invention, through collaborative optimization of multiple performance indexes, on the premise of following the soft switching constraint, the switching loss and the operation loss of the switching tube are reduced, and the overall efficiency and the reliability of the equalizer are improved.

The application discloses a non-rectangular tunnel structure and a parameter design method thereof, and relates to the technical field of tunnel section construction. On one hand, the method comprises the following steps: according to the track transverse elastic deformation, the track vehicle transverse displacement and the curve radius at the track turning position, the widening distances of the inside and the outside of the tunnel structure passing space at the turning position are determined; according to the running speed of the track vehicle, the curve radius at the track turning position and the distance between the two track head center lines, the inclination angle of the outer side surface of the tunnel structure at the turning position is determined; according to the widening distances of the inside and the outside of the tunnel structure passing space at the turning position and the inclination angle of the outer side surface of the tunnel structure at the turning position, the size parameters of the tunnel structure at the turning position are determined. On the other hand, the non-rectangular tunnel structure obtained by using the method is provided. Through the above parameter design method, the utilization rate of the complex underground complex space can be improved by avoiding other structures outside the outer side surface of the tunnel structure.

This invention discloses a deep learning-based product structure parameterized design optimization method and system, relating to the field of computer-aided design technology. The key technical solutions include the following steps: collecting multi-source heterogeneous data on product structure design, including parameter design documents, simulation data, process execution records, and failure case reports; generating a parameter full-process influence correlation map based on the multi-source heterogeneous data; performing feature judgment on the parameter full-process influence correlation map to obtain a set of key constraint parameters; and generating an optimization target system based on the priority ranking and interactive constraint relationships of the key constraint parameter set. This optimization target system includes structural parameter targets in the design phase, structural manufacturing targets in the process phase, and structural stability targets in the usage phase. The effect is to avoid the problems of insufficient production adaptability and poor usage stability caused by focusing only on a single stage target, improving the parameter coordination throughout the product lifecycle, and shortening the product development iteration cycle.

This invention relates to the fields of computational mechanics and computer-aided engineering, specifically a mathematical model capable of predicting the forming shape of spherical bearings. The model takes the blank's geometric dimensions, mold parameters, and material elastic modulus as input. Based on the precise geometric relationships of the compression process, it establishes a system of equations, deriving the core relationship between the compression amount and the theoretical mean diameter, and solving for the theoretical shape without considering springback. By introducing the theory of compression-bending springback, it establishes springback geometric constraints and expressions for reverse stress. Based on the static equilibrium conditions under pure bending, it derives the explicit relationship between the radius after springback and the radius before springback, elastically correcting the theoretical shape to obtain a predicted shape closer to the actual forming result. The model's output can be compared and verified with finite element simulations and actual experimental data, exhibiting high prediction accuracy in the stable deformation stage with large compression amounts. This invention provides effective guidance for process parameter design and optimization, reducing the number of experiments and development cycles.

The invention provides a parameter design method considering impedance interaction characteristics of a distributed power supply and an SVC, and the method comprises the steps: constructing a port impedance model of a typical three-phase LCL type grid-connected converter and the SVC, building a node admittance matrix of a converter system, drawing a modal impedance curve of the system before and after the system is connected with the SVC in parallel through a modal analysis method, and determining a resonant mode of the system. The method comprises the following steps: solving a system characteristic root, taking a damping coefficient as a key parameter for representing the stability of the system, analyzing the influence of SVC parameters on the stability of the system, and aiming at a converter multi-machine grid-connected system, considering the reactive capacity configuration requirement of a station, aiming at improving the damping of the system, and combining a particle swarm algorithm to optimize the SVC parameters. According to the method, broadband harmonic oscillation caused by interaction of background harmonic waves and network impedance under complex working conditions can be effectively suppressed, reactive power provided for a power grid can be flexibly set, and the dual targets of electric energy quality optimization and harmonic oscillation treatment are achieved.

The application relates to the technical field of scaffold scheme checking, and particularly discloses a scaffold scheme checking system, which comprises a model construction module, a parameter input module and a checking module. The model construction module is used for setting a structure parameter design table and a design standard value corresponding to a scaffold building type under different scaffold safety levels, inputting steel pipe sizes and corresponding characteristic parameters, and inputting a calculation formula of the related parameters. The parameter input module is used for obtaining the scaffold building type, the structure parameters and the steel pipe sizes of the scaffold. The checking module is used for calculating the design value of the scaffold according to the scaffold building type, the structure parameters and the steel pipe sizes of the steel pipes used, comparing and analyzing the design value with the design standard value, and outputting a scaffold checking result. The application realizes checking of a scheme before scaffold building, safety level and risk assessment of the scaffold after building, and makes the operation personnel accurately and timely know the construction risk of the scaffold, so that the construction safety is ensured.

The invention discloses a self-tuning delay method and system for suspension load vibration control, and relates to the field of mechanical structure vibration control. According to the method, a parameter observation function is introduced into a self-tuning delay control algorithm, so that the delay parameter can be adaptively adjusted in real time according to the changing rope length, and the control algorithm can still keep robust and effective vibration suppression performance under the condition that the system parameter (such as the rope length) is continuously changed; the problem of performance degradation of a traditional control method in a time-varying system is solved; in the core time lag parameter design of the self-tuning time lag control algorithm, the inherent closed-loop time lag of the system is directly integrated, and the use of a traditional time lag compensator (such as a Smith predictor and model predictive control) which is complicated and depends on a high-precision model is avoided, so that a control loop is basically not influenced by the system feedback time lag, and the control precision is improved. And an effective and simple solution is provided.

This invention discloses a steam cooling energy-consuming device and its parameter design method, relating to the technical field of heat exchanger design for marine power systems. On one hand, the device includes a shell, a tube sheet assembly, a baffle plate, and a heat exchange tube assembly. The tube sheet assembly includes two spaced-apart tube sheets, both located within the shell and connected to the inner wall of the shell, dividing the shell into a heat exchange chamber and a water supply chamber. The baffle plate divides the water supply chamber into an inlet chamber and an outlet chamber. The heat exchange tube assembly includes at least two U-shaped heat exchange tubes, both ends of which are fixed to the tube sheet assembly, with one end communicating with the inlet chamber and the other end communicating with the outlet chamber. On the other hand, this invention also provides a parameter design method for the steam cooling energy-consuming device. By designing the required tube sheet spacing, the number, diameter, and spacing of the U-shaped heat exchange tubes, the strength of the U-shaped heat exchange tubes is ensured without affecting the sealing performance of the connection between the U-shaped heat exchange tubes and the tube sheet, thus solving problems such as heat exchange tube expansion leading to detachment from the heat exchange tubes.

The invention discloses a split linkage type filling coal mining hydraulic support parameter design method and system.The hydraulic support comprises a supporting unit and a falling material filling unit arranged at the rear end of the supporting unit, and the supporting unit and the falling material filling unit are connected through a linkage mechanism; the design method comprises the following steps: acquiring an engineering geological condition parameter set G of a target working face and a physical property parameter set M of a solid filling material; determining a support unit parameter set P, a blanking and filling unit parameter set F and a linkage mechanism parameter set L; establishing a mathematical model among the support unit parameter set P, the blanking filling unit parameter set F and the linkage mechanism parameter set L, constructing a filling efficiency objective function based on the mathematical model, solving the objective function according to the collaborative constraint condition, and obtaining design parameters; a support prototype is manufactured based on the obtained design parameters, an industrial test is conducted on the target working face, the filling rate eta is actually measured, and final design parameters are output.

The invention discloses a postweld heat treatment process optimization method for a G115 steel welded pipeline, and relates to the technical field of heat treatment numerical simulation. Through three core technologies of multi-physics field coupling modeling, a data-physics dual-drive algorithm and closed-loop real-time regulation and control, full-flow intelligentization from parameter design to process control is realized, the problems that a traditional process depends on experience, lacks system coupling consideration, is long in optimization period, is unstable in performance and the like are solved, and the method is suitable for large-scale popularization and application. And the structure stability of postweld heat treatment of the G115 steel welded pipeline is remarkably improved, the residual stress is reduced, and the energy consumption and the cost are reduced.

The invention relates to the field of electromagnetic parameter design of a phase-shifting transformer, in particular to an electromagnetic parameter design method of an ice suppression type phase-shifting transformer considering multi-factor coupling. According to the technical scheme, the method comprises the steps of collecting multi-factor constraint conditions, wherein the multi-factor constraint conditions comprise meteorological condition collection, line thermodynamic parameter collection and system electrical parameter collection; ice suppression power demand analysis based on thermal-electric coupling; designing the output capability of the ice suppression type phase-shifting transformer meeting the system constraint; reversely solving electromagnetic parameters of the phase-shifting transformer; verification and iterative optimization: substituting the designed electromagnetic parameters into an electromagnetic transient equation for simulation analysis, and verifying whether the electromagnetic transient characteristics of the electromagnetic parameters meet requirements or not when the system fails or is quickly adjusted; and if the verification is not passed, returning to adjust the designed electromagnetic parameters until all design targets are met. The method is suitable for electromagnetic parameter design of the ice suppression type phase-shifting transformer.

The invention provides a freight heavy truck driving parameter design method, system and device and a medium, and belongs to the technical field of intelligent driving, and the method comprises the steps: S1, classifying the operation scenes of a freight heavy truck, and collecting the driving parameter data of a driver in each operation scene; s2, preprocessing the collected driving parameter data to obtain a driving parameter sample set; and S3, analyzing the driving parameter sample set by adopting a clustering algorithm, and extracting typical driving parameters in each operation scene. Accurate matching of the driving parameters and the freight scene is achieved, and adaptability, safety and efficiency of the intelligent driving system in a complex freight environment are improved.