82 results about "Force analysis" patented technology

The invention discloses a stress analysis method for bridge incremental launching construction, and particularly relates to the field of stress analysis. According to the method, a mechanical state matrix is generated by combining wavelet noise reduction and Kalman filtering through distributed optical fibers, a piezoelectric force sensor, a vibrating wire stress meter and other equipment and real-time data; a pushing system-temporary support-beam body coupling dynamic mechanical model is established, and a generalized alpha method is adopted for solving and Bayesian optimization calibration parameters are adopted; key parameters are identified on line through a three-level progressive framework, boundary conditions are dynamically updated in combination with a total station and a laser tracker, and supporting rigidity self-adaptive adjustment is achieved through fuzzy PID control. Model confidence evaluation adopts a residual norm-modal confidence criterion-Bayesian update three-level mechanism, finally, stress distribution, support reaction and displacement deviation are calculated based on a correction model, and a safety index, threshold alarm and risk analysis report is generated through a fuzzy comprehensive evaluation method and fed back to a construction control center in real time.

The invention belongs to the technical field related to tunnels, and provides a subsea tunnel cross-fault water inrush catastrophe early warning decision-making method and system in order to solve the problems of inaccurate water inrush recognition, lack of interpretability and the like when an existing subsea tunnel passes through a fault zone high-risk scene. Full-process response control from weighting, prediction to explanation of the input features is realized; driving force analysis is carried out by adopting an interpretable model, so that a transparent and credible risk assessment result is provided; and by combining key driving force in the multi-source heterogeneous data and through numerical simulation of the water inrush catastrophe condition, real-time identification and early warning of the tunnel water inrush risk are comprehensively realized, the identification accuracy of the water inrush risk in the tunnel construction process and the completeness of an early warning mechanism are effectively improved, and the method has important engineering application value.

The invention discloses a building block assembly specification generation method based on dynamic stress and related equipment. According to the method, data is extracted based on images of building block components, dynamic stress characteristics are calculated and coded in a partitioned mode, a stress transmission relation is determined, key nodes are identified, an assembly step sequence is decomposed according to the key nodes, and finally an assembly specification considering dynamic stress is generated. According to the method, geometric and connection information of building block components is extracted, and dynamic stress characteristics and a transmission relation of the building block components are further calculated and analyzed, so that key stress nodes which are crucial to structural stability are identified. On the basis of the key nodes, the splicing process is decomposed into a step sequence considering stress balance, so that a splicing instruction containing stress analysis is generated, the stability of components in the building block splicing process is improved, professional splicing guidance containing dynamic stress information is provided for a user, and the building block splicing efficiency and success rate are effectively improved.

The invention discloses a method and system for space-time evaluation and restoring force early warning of a regional ecological hydrological function, and belongs to the technical field of ecological hydrology and environment monitoring and management, and the method comprises the steps: obtaining a multi-source index capable of sustainably diagnosing the ecological hydrological function; performing standardization processing on the multi-source indexes by adopting a global space-time threshold method; performing comprehensive evaluation on the standardized index data by adopting a combined weighting method and a nonlinear comprehensive model to obtain a comprehensive index; based on the comprehensive index or the multi-source index, dynamic early warning of the regional ecological hydrological function stability is carried out by adopting a critical moderation theory; and performing spatial clustering according to the comprehensive index, and performing driving force attribution analysis on the functional evolution of each clustering region to generate a spatial differentiated collaborative recovery path. The method solves the problems that a traditional evaluation method neglects quality, lacks space-time comparability and cannot carry out dynamic early warning and precise countermeasure, and has the remarkable advantages of being more scientific in evaluation, more reliable in result, and capable of carrying out early warning and countermeasure.

The invention relates to the technical field of intelligent engineering, in particular to a large-span reticulated shell column deviation stress analysis method and system based on the VR technology, and the method comprises the following steps: generating a large-span reticulated shell VR model through the rendering of a Unity 3D engine in a VR interaction system, and carrying out the visualization through VR head display equipment; identifying a column deviation high-risk area in the large-span reticulated shell VR model through a risk positioning model loaded in a processor in the VR interaction system; and predicting structural stress data of the column deviation high-risk area through an interaction response prediction model loaded in a processor in the VR interaction system according to interaction behavior data received in the column deviation high-risk area through the VR handle. The large-span reticulated shell VR model is rendered through the VR interaction system, the deviation high-risk area is determined through the risk positioning model, analog simulation of the deviation adjustment process is achieved based on the interaction behavior data of the user through the interaction response prediction model, and the user experience is improved.

A three-dimensional ice accretion reconstruction method and apparatus for a fan blade, and a device and a storage medium. The method comprises: using a cross-sectioning method to cut a fan blade, so as to obtain two-dimensional airfoil-section coordinate data of each position; performing airflow field calculation on each two-dimensional airfoil section, so as to obtain an external airflow velocity of each two-dimensional airfoil section; performing force analysis on water droplets, calculating impingement positions of the water droplets on each two-dimensional airfoil section, and then calculating a local water droplet impingement coefficient and a freeze fraction; on the basis of the local water droplet impingement coefficient, the freeze fraction and environmental parameters, acquiring the thickness of an ice accretion on each two-dimensional airfoil section and an ice accretion shape on each two-dimensional airfoil section; on the basis of the thicknesses of the ice accretions, updating the two-dimensional airfoil-section coordinate data; performing ice accretion calculation at the next time step until a preset condition is met; and performing lofting processing on each two-dimensional airfoil section, so as to obtain a three-dimensional ice accretion shape result of the fan blade. The increased thicknesses and shape of ice accretions of a fan blade under different working conditions are quickly obtained with a small amount of calculation.

The invention relates to the technical field of crane control, in particular to an unmanned crane control method and system, which comprises the following steps: acquiring a running space, establishing a basic simulation space through simulation, acquiring a real-time space image, establishing an execution state space, and marking a starting point and an ending point to determine a track space; a dangerous object is identified, a safety space signal is determined, and after the safety space signal is detected, the gravity center of a transported object is obtained, a grabbing point is set, the transported object is hoisted, stress analysis is conducted, longitudinal inertia force is set, tipping and anti-tipping moments are calculated, and a deviation angle is adjusted to obtain a normal operation signal; and finally, carrying out stress analysis again according to the deviation angle, setting a transverse inertia force to calculate a horizontal direction moment, determining an acceleration critical value and setting a real-time operation acceleration. According to the method, shutdown is reduced through unmanned control, parameters are optimized, efficiency is improved, the method is adaptive to multiple scenes and multiple models, and technology upgrading is promoted.

The invention provides a bridge supporting column stress measurement method based on structure collaborative stress analysis, and belongs to the technical field of stress measurement, and the method comprises the steps: collecting the stress, strain and displacement data of each bridge supporting column in real time; calculating a local stress index of each bridge support column based on the collected real-time data; according to the connection relation between the bridge overall structure parameters and the bridge supporting columns, a structure collaborative stress model is established; calculating a cooperative stress correction index of each bridge support column; and comparing the cooperative stress correction index with the dynamic stress evaluation interval, performing trend analysis in combination with historical data and environmental factors, judging whether a structural risk exists or not, and sending out an early warning signal when the structural risk exceeds a threshold value. According to the method, a structure collaborative stress analysis mechanism is introduced, the influence of the overall stress state of the bridge on a single bridge supporting column is comprehensively considered, key structure risk points can be recognized more accurately, and the reliability and early warning capacity of bridge safety monitoring are improved.

The present invention relates to the technical field of treadmills, and in particular to a treadmill with a running posture analysis function and a running board reaction force analysis method. The running board reaction force analysis method comprises the following steps: obtaining real-time air pressure data of the left airbag and the right airbag and generating air pressure time series curves respectively; distinguishing the left foot landing data segment, the right foot landing data segment and the two-foot-in-the-air data segment based on the air pressure time series curve; intercepting the left foot landing data segment and / or the right foot landing data segment used for reaction force analysis, and calculating the ground contact peak value by inferring the pressure exerted on the running board by the user during running based on the peak air pressure data. The data source of the present invention is the direct reflection of the force exerted by the running board on the sole of the foot, which can intuitively reflect the user's ground contact peak value and impact load rate. Moreover, the method does not require wearing and does not affect the user's daily running habits.

The invention belongs to the field of bearing manufacturing, particularly relates to a comprehensive stress analysis and calculation method for a main bearing of a shield tunneling machine, and mainly provides a comprehensive stress analysis and rapid calculation method for the design and checking process of the main bearing of the shield tunneling machine. According to the method, the force generated by the bolt, the contact force between the roller and the raceway surface, the contact force between the flange surface and the ferrule and the calculation method of the external force borne by the system are determined, the stress forms a resultant force matrix, a nonlinear equation set is solved to obtain a displacement matrix, and finally the bearing condition of each stress unit is obtained. According to the method, factors such as clearance, roller shaping and ferrule compression are considered, and the influence of interaction among the units on the bearing conditions of the units is considered, the stress conditions of the rollers, the bolts and the contact surfaces can be simply and quickly calculated, and a basis is provided for design and check of the main bearing of the shield tunneling machine.

The application discloses a portrait inspection and identification method based on gait cycle decomposition and multi-phase force analysis, and comprises the following steps: extracting the skeleton key points of a target object in a target object image set in a comparison video and the confidence score of each skeleton key point; extracting the features of the target object in the target object image set according to the skeleton key points of the target object, and obtaining the target object features, wherein the target object features comprise basic features, gait cycle features, gait stage features and gait parameter features; integrating the basic features, the gait cycle features and the gait stage features to obtain comprehensive features; respectively calculating the similarity of the target object features and the comprehensive features in the comparison video to obtain similarity calculation results and overall similarity calculation results; and obtaining the identity identification result of the target object according to the similarity calculation results and the overall similarity calculation results.

This invention relates to a precise motion correction control system and method for an unmanned workboat, belonging to the field of unmanned vessels. The system comprises a workboat hull, an accelerometer, a spirit level, and a central processing unit installed on the hull. The method comprises the following steps: S1: initialization; S2: receiving client instructions to perform operations; S3: real-time sensing of the hull state using the installed accelerometer, spirit level, and pressure sensor; S4: force analysis of the hull based on empirical formulas and the sensed hull state, calculating the theoretical action of the water pump; S5: selecting a candidate experience pool that meets the error limit requirements using a KNN network; S6: calculating the optimal action using a DQN network; S7: sending corresponding control instructions to the water pump according to the optimal action and executing them; S8: repeating steps S3 to S7 until the operation is completed. This invention can effectively reduce the action solution space, reduce the complexity of the solution, and improve control accuracy, thereby enhancing the adaptability of unmanned workboats to complex environments.

The present invention belongs to the technical field related to tunnels. In order to solve the problems of inaccurate water inrush identification and lack of interpretability in high-risk scenarios where existing submarine tunnels cross fault zones, a submarine tunnel cross-fault water inrush disaster warning decision-making method and system are proposed, and a joint modeling path of attention mechanism and Bayesian inference is constructed to realize the full-process response control of input features from weighting, prediction to interpretation; an interpretable model is used for driving force analysis, thereby providing transparent and reliable risk assessment results; and the key driving forces in multi-source heterogeneous data are combined to realize real-time identification and warning of tunnel water inrush risks through numerical simulation of water inrush disaster situations, effectively improving the accuracy of water inrush risk identification and the perfection of the warning mechanism during tunnel construction, and having important engineering application value.

The invention relates to the technical field of rail transit, in particular to a method for designing a high-speed railway bridge with in-beam travelling, which comprises the following steps: determining the clear width and clear height of a box beam chamber, keeping the clear width and clear height of the box beam chamber constant along the length direction of the bridge, and arranging a rail on a bottom plate of the box beam; according to the designed running speed of the train and the clear width and the clear height of the box girder cavity, simulation analysis is conducted on the aerodynamic effect in the box girder cavity for the most unfavorable working condition when the train runs; according to simulation analysis results of the mechanical effect and the aerodynamic effect of the train, stress analysis is conducted on the box girder in software, then the theoretical thickness of a box girder bottom plate, a box girder web and a box girder top plate is determined, and design is completed. According to the design method, the defects that in the prior art, when a train runs in a box girder, the aerodynamic effect of an inner cavity of the box girder is obvious, stress of all positions of the box girder cavity is different, but no corresponding design method exists at present are overcome.

The application discloses a bearing capacity calculation method and device of a pile structure with a bearing platform and a storage medium, and solves the problem that the design method is relatively complex and the calculation result is not accurate in the prior art. The calculation method comprises the following steps: obtaining size parameters and adjacent soil parameters of a bearing pile, a bearing platform and a foundation pile in the pile structure with the bearing platform; inputting the size parameters and the adjacent soil parameters into a bearing capacity calculation model to obtain bearing capacity data output by the bearing capacity calculation model; and the bearing capacity data at least comprises: a pushing force of a rear soil body on the bearing pile, a counterforce of the bearing platform, an eccentricity of the counterforce of the bearing platform, a stress of the counterforce of the bearing platform and an axial pressure at a bottom end of the bearing pile, which are obtained by solving a soil pressure analysis model based on the bearing pile; and a positive section bending moment of the bearing platform, a downward punching shear damage of the bearing pile on the bearing platform and an upward punching shear damage of a rear row of foundation piles on the bearing platform, which are obtained by solving an asymmetric force analysis model based on the bearing platform.

This invention discloses a high-precision fatigue analysis method for spring arms, comprising the following steps: S1: Preprocessing the model using mesh preprocessing software and calculating the stress distribution of the part under fatigue conditions using finite element analysis; S2: Analyzing the fatigue life using fatigue analysis software; S3: Comparing the fatigue results obtained through experiments with the analyzed values. The method closely approximates actual experiments in simulating the constraints and loads on the spring arm's motion, resulting in better convergence of the force analysis. It addresses the accuracy issues caused by the complex forces at the spring points of the spring arm, and the analysis results show high consistency with actual experimental verification. This allows for early risk identification in the design phase, improving development efficiency and reducing development costs. It features high versatility and accurate calculation results.

The present application relates to a kind of large-span steel truss beam cable-stayed bridge closure intelligent control system and method, adopt beidou positioning instrument, wireless tiltmeter and IMU sensor etc. and form closure intelligent control system, reduce the difficulty of construction survey, improve the measurement efficiency.The data obtained by the automatic monitoring system are analyzed to analyze the closure mouth state and control the force analysis of construction adjustment, the closure mouth state is adjusted using full-automatic hydraulic jack, and the large-span steel truss beam cable-stayed bridge is closed in the middle of the span by combining fine adjustment measures.The method helps to reduce the waiting operation time of large cantilever construction, solves the problems of low construction efficiency, different synchronization of closure adjustment measures, and realizes the accurate closure of large-span steel truss beam cable-stayed bridge.

The present invention discloses a tunnel construction water gushing monitoring device, which belongs to the technical field of tunnel construction. The device comprises a base and a float, wherein a silk thread is connected between the base and the float, and further comprises a retractable assembly and a load adjustment system; the load adjustment system comprises a data acquisition module, a force analysis unit, a torque analysis unit, an adjustment module, an offset angle analysis unit and an early warning unit; the present invention uses the retractable assembly and the load adjustment system to not only dynamically adjust the tension of the silk thread to cope with water flow impact and rockfall interference, and prevent the problem of easy deviation or entanglement of the cable in traditional float monitoring; the data acquisition module can also be used to collect water flow velocity, vertical cross-sectional area of ​​the silk thread entering the water and rockfall status data in real time, comprehensively evaluate the water gushing risk and generate an early warning signal, thereby improving the stable operation of the device in a complex tunnel environment, thereby improving the stability of the float on the water surface, and providing reliable protection for tunnel construction safety.

This invention relates to the field of debugging and testing technology for airborne equipment, specifically a method for locating potentiometer adjustment holes based on a force feedback rectangular search strategy. The method includes the following steps: S1, hole error analysis; S2, force analysis; S3, hole-finding strategy design; S4, specific hole-finding process. This invention provides a method for locating potentiometer adjustment holes based on a force feedback rectangular search strategy. Compared with existing technologies, without increasing hardware investment or significantly increasing system computation, it improves the hole-finding accuracy from 80.8% to 98.3%, enhancing the overall efficiency of the automatic debugging system. Furthermore, during the hole-finding process, the contact force between the screwdriver and the potentiometer adjustment knob panel is always kept within a set safety threshold range, preventing damage to the potentiometer.

This invention discloses a magnetic levitation control method based on regularized data-driven strategy optimization. First, force analysis is performed on the smallest levitation unit of the maglev train to establish nonlinear dynamic equations. Then, input and output data of this unit are collected at time intervals {0,1,…,k}, and a sample covariance matrix is ​​constructed based on the data. The dynamic equations of the levitation system are rewritten through covariance parameterization. Subsequently, a regularization term is introduced into the LQR cost function to construct a direct data-driven LQR optimization problem with regularization constraints. Finally, the strategy parameter matrix is ​​updated using the projected gradient descent algorithm, and the covariance matrix and its inverse matrix are recursively updated using the rank-one update rule to achieve online control gain update and complete the levitation control of the maglev train. This invention eliminates the need for precise dynamic modeling, solving the problems of cumbersome modeling and inaccurate parameters in traditional model-based control. The regularization term significantly improves the system's robustness to complex disturbances and noise, effectively avoiding system instability under conditions of minimal air gap constraints.

This invention discloses a modeling method, system, and device for a suspension system with a non-guided buffer block, belonging to the field of suspension force analysis technology. The modeling method includes: establishing a mechanical model of the suspension system; determining the point of force application and the initial force plane through the kinematic relationship between the control arm and the buffer block; thereby determining the direction of the force between the buffer block and the control arm; and further analyzing the force situation of the suspension system. Based on the kinematic relationship between the control arm and the buffer block, the relative motion between the control arm and the buffer block can be determined, thereby determining the point of action of the buffer block on the control arm, and the initial force plane, which is perpendicular to the force between the buffer block and the control arm at the initial contact stage. The direction of the force between the buffer block and the control arm is determined based on the point of action and the initial force plane, solving the problem of uncertainty in the load direction of the buffer block due to wheel bounce, and realizing the force analysis of a suspension system using a non-guided buffer block.

The present application provides a method for analyzing the force on complex components of high-rise structures based on multi-scale model correction. This method obtains the measured data of the static and dynamic force responses of corresponding test components in high-rise structures and the simulated data of the static and dynamic force responses calculated based on the initial finite element model; constructs a multi-scale finite element model correction and optimization function according to the relative error between the measured data and the simulated data; uses a multi-objective optimization algorithm to realize the correction of the initial finite element model; finally, analyzes the stress change of the component under the action of super strong wind loads based on the corrected finite element model. This method can ensure the accuracy of simulating the structural response based on the corrected finite element model, and further confirm the safety of the actual high-rise structure under the action of super strong wind loads, etc.

The application discloses a kind of excavator material weighing system and method, belong to engineering machinery intelligentization measurement field;System is composed of excavator body, inclination sensor, pressure sensor and controller;Inclination sensor is installed in bucket rod and bucket, pressure sensor is installed in bucket cylinder two cavities, controller posture, pressure, handle and main pump signal are collected, and weighing calculation is carried out in the relative static time when unloading before digging is completed, and bucket is not moved.The mechanical model is established only by using bucket parameters, the complex parameters of swing arm and bucket rod are omitted, and the calibration difficulty and external interference are reduced.The center of gravity of material, the weight of bucket is corrected in real time by force analysis of bucket and cylinder output calculation, and the weighing accuracy is significantly improved.The application solves the problems of existing technology, such as complicated calibration, easy to be affected by machine parameters, large dynamic error, has the advantages of simple calculation, high stability, strong adaptability, accurate weighing, and is suitable for various types of excavator online material measurement operation.

The embodiment of the invention provides a maximum wellhead tension determination method and device, a processor and a storage medium, and relates to the technical field of logging, the method comprises the following steps: determining a target well depth position sequence corresponding to a cable according to the current position of a sticking point when the logging operation is stuck; wherein the target well depth position sequence comprises a plurality of target well depth positions; based on the axial force of the sticking point at the current position, wellhead tension at each target well depth position is determined; and determining the maximum wellhead tension according to the wellhead tension of each target well depth position. According to the method and the device, the wellhead tension at each target well depth position is determined through iterative calculation based on the stress analysis of the logging cable, so that the maximum wellhead tension is determined, the maximum wellhead tension can be determined efficiently and precisely without manual intervention, and the accuracy of the maximum wellhead tension is improved. The problems that the maximum wellhead tension can be roughly estimated only by professional technicians when the well logging operation is stuck, and meanwhile operation is tedious, the speed is low and precision is low are solved.

The present invention discloses a spiral oil groove design method, system, device and medium, including: performing a force analysis on the rolling piston according to the structural characteristics of the compressor pump body to obtain the resultant external force of all the resistances acting on the rolling piston; determining the compressed area of the inner wall surface of the bearing during the rotation of the crankshaft according to the resultant external force of all the resistances acting on the rolling piston; obtaining the zero-compression area of the inner wall surface of the bearing according to the compressed area of the inner wall surface of the bearing during the rotation of the crankshaft, that is, obtaining the layout area of the spiral oil groove to be designed on the inner wall surface of the bearing; by performing a force analysis on the rolling piston, the present invention takes the zero-compression area of the inner wall surface of the bearing as the layout area of the spiral oil groove to be designed, avoids the wear of the spiral oil groove during the rotation of the crankshaft, ensures the reliability of the lubrication effect between the crankshaft-bearing cover moving pair, effectively reduces the power consumption of the crankshaft-bearing cover moving pair, and improves the reliability of the compressor pump body.

The invention relates to the technical field of simulation analysis, in particular to an analysis method and device for the cracking risk of a sealing rubber strip, electronic equipment and a medium, and the method comprises the steps: carrying out the segmentation definition of the sealing rubber strip at a target position, and building a two-dimensional finite element analysis model; applying boundary conditions and loading conditions to the two-dimensional finite element analysis model to perform section compression simulation analysis to obtain a first analysis result; a target section of the sealing rubber strip with the point stress concentration phenomenon in the first analysis result is recognized, a three-dimensional finite element analysis model is constructed, boundary conditions and loading conditions are applied to the three-dimensional finite element analysis model for three-dimensional compression simulation analysis, and a second analysis result is obtained; according to the second analysis result, whether the line type stress concentration phenomenon exists in the sealing rubber strip of the target section or not is judged, and the section structure of the sealing rubber strip with the line type stress concentration phenomenon is optimized. Therefore, comprehensive stress analysis is carried out on the frame sealing rubber strip through simulation, and efficient evaluation of the cracking risk is achieved.

The utility model discloses a force analysis device which comprises a first rod, a second rod, a supporting piece, a force sensor, a pull wire and a fixed pulley, the second rod, the fixed pulley and the force sensor are respectively installed on the supporting piece, the first rod is rotatably connected with the second rod, one end of the pull wire is connected with the first rod, and the other end of the pull wire is connected with the force sensor. And the orientation of the pull wire is adjusted through the fixed pulley. The first rod and the second rod which are rotationally connected are used for simulating the front arm and the upper arm respectively, and the force sensor, the pull wire and the fixed pulley are arranged, so that it is guaranteed that the force sensor relatively accurately measures the acting force borne by the first rod (the front arm), mechanical experiment display for simulating arm stress is more rigorous and scientific, and teaching requirements are met.

The present invention discloses a simplified calculation method and system for the shear force and opening of segment joints in immersed tube tunnels. The method comprises: determining basic assumptions; then setting the relative axial and vertical deformations and relative rotation angles at the neutral axis of the joint, and clarifying the calculation method for the deformation of the concrete end spring, Ω waterstop, and shear key; then performing force analysis on the concrete per unit area of ​​the end face, the shear key, etc., deriving force formulas, and clarifying the expressions and force mechanisms for the axial force, shear force, and bending moment; considering the extreme conditions of overall heating and cooling, deriving the heating using an elastic foundation beam model and treating the cooling as an articulated joint, and simulating using three-dimensional finite element software; finally, determining the influencing factors and assumptions based on longitudinal three-dimensional model parameter analysis, establishing and deriving a simplified theoretical calculation model, and verifying the formula by comparing the results of the three-dimensional calculation model. This method achieves efficient and accurate calculation of the shear force and opening of segment joints.

The invention relates to a large-scale high-rigidity dynamometer system, and belongs to the field of vibration measurement. Comprising an inner platform assembly, a force measuring ring assembly, an outer platform assembly and six-component force analysis software. The outer platform assembly is of a horizontally-placed square cylinder structure. A groove is formed in the top of the outer platform assembly; the inner platform assembly is embedded into the groove downwards from the top to achieve butt joint with the outer platform assembly. Force measuring ring assemblies are evenly arranged on the lower surface of the inner platform assembly in the circumferential direction. A cable of each force measuring ring assembly is led out from the side wall of the outer platform assembly and is connected with the six-component force analysis software; according to the invention, the six-component disturbance vibration force / torque generated by a large-scale disturbance vibration source can be accurately measured and displayed in real time, the method is used for analyzing the dynamic characteristics of the disturbance vibration source in six degrees of freedom in the space in the operation process of a spacecraft, and reference is provided for disturbance source suppression.

The application provides a transverse jet flow mixing characteristic prediction method and device, wherein the method comprises the following steps: obtaining physical parameters of a main flow, initial physical parameters and initial geometric parameters of a transverse jet flow, and a position of a target prediction plane; obtaining positions of penetration centers of the transverse jet flow at each intermediate prediction plane based on the physical parameters of the main flow, the initial physical parameters and the initial geometric parameters of the transverse jet flow; and obtaining a trajectory of the transverse jet flow and coordinates of a penetration center of the transverse jet flow at the target prediction plane based on the positions of the penetration centers of the transverse jet flow at the intermediate prediction planes. The transverse jet flow mixing characteristic prediction method and device provided by the application can realize more efficient, rapid and relatively accurate prediction of the mixing characteristic of a small-flow transverse jet flow by regarding the trajectory flow of the transverse jet flow as a series of steady flows composed of mutually non-interfering jet flow elements, performing force analysis on any jet flow element, and performing recursion based on the Lagrange recursion algorithm.