664 results about "Motion simulation" patented technology

The invention relates to the technical field of landslide motion simulation, in particular to a landslide motion simulation method based on a motion model. The method comprises the following steps: acquiring data of a target landslide area; generating complete topographic feature data through landform identification and difference complementation; performing topographic analysis on the data; identifying a landslide-prone area, constructing a three-dimensional model, judging a critical state, performing risk weight calculation, and generating a probability distribution set of the landslide-prone area; performing path analysis to obtain an initial motion track and a probability prediction model thereof, constructing a three-dimensional dynamic simulation scene, performing iterative analysis, finally generating a landslide motion simulation result, and establishing a dynamic risk early warning and emergency response model to improve the prevention and control capability of landslide disasters. According to the invention, a more accurate and more reliable landslide motion simulation method is realized.

A deep reinforcement learning-based vehicle platoon control method and system. The method comprises: on the basis of a vehicle dynamics model, constructing a motion simulation model for vehicle platoon operation; on the basis of the motion simulation model for vehicle platoon operation and vehicle operating states, by using a constant time headway strategy, obtaining a state space and an action space for vehicle platoon control; and establishing a DDPG network on the basis of the state space and the action space for vehicle platoon control, using a reward function mechanism to train the DDPG network, stopping training when the total reward obtained per episode during the training process no longer increases, so as to obtain a trained control strategy network, and by using the trained control strategy network, performing platoon control.

The invention belongs to the technical field of wind tunnel tests, and particularly relates to a precession simulation device for a spiral flutter wind tunnel test. According to the invention, the design problem of the rotor craft spiral flutter wind tunnel test device is solved, and the key influence parameters and influence rules of the spiral flutter of the aircraft are researched by designing the precession motion simulation device of the rotor craft. Rotation of the rotor wings can be realized in the wind tunnel, and the rotating speed of the rotor wings is adjusted through the motor. Meanwhile, pitching and deflection modal decoupling of the rotating shaft of the rotating system is achieved, and pitching and deflection modal frequencies are independently adjustable; meanwhile, the axis of the pitch axis and the axis of the yaw axis coincide, so that pitching and yaw freedom degree coupling precession motion can be achieved under the effect of gyroscopic moment. Meanwhile, nacelle rotating mass rotational inertia, nacelle weight and mass center position adjustment can be achieved; and finally, the rotating speed of the rotating mass such as the rotor wing and the propeller hub can be adjusted through a speed adjusting motor, matching of the rotating speed and the incoming flow speed is guaranteed, and the spiral flutter state is achieved.

A fixed-wing unmanned aerial vehicle large-attack-angle longitudinal aerodynamic characteristic test device and a test method relate to the technical field of aircraft aerodynamic characteristic test, and mainly comprise a wind tunnel simulation device, an unmanned aerial vehicle bearing and motion simulation device, a sensor arranged on an unmanned aerial vehicle or a model, a data acquisition system and the like. The simulation module is used for simulating longitudinal motion states and attitudes of the unmanned aerial vehicle in various pneumatic environments; the device is used for experiments, nonlinear longitudinal aerodynamic characteristics of the unmanned aerial vehicle under various attack angles are obtained, a phase diagram reflecting the attack angle-pitch angle speed change relation of the system state is obtained, a balance point under the normal working condition and the limit working condition is determined, and a basis is provided for flight control of the unmanned aerial vehicle under the large attack angle limit working condition.

The invention discloses a shaping robot, a shaping system and a grain processing method thereof. An integrated moving and transferring device is used as a chassis for bearing all modules; the shaping industrial robot is used for driving a cutter on the mechanical arm to conduct shaping machining. The medicine scrap sucking and cleaning device is used for cleaning scraps generated by processing; the tool changing magazine is used for placing and managing tools and comprises a quick-changing tool rest, and a detection sensor used for detecting whether the tools exist or not is arranged on the quick-changing tool rest; the control system comprises a coordinate system management module, a tool path planning module, a robot kinematics module, a collision detection module, a motion simulation module and a robot program generation module. Automatic machining positioning, automatic machining path planning and automatic cutting tool switching and management can be achieved; the automation degree of grain cutting machining is effectively improved; in the shaping process, temperature and contact force detection sensors are used for detection, and early warning protection in the machining process is achieved.

The invention discloses an ocean engineering equipment coupling collision dynamics modeling simulation method and device, belongs to the technical field of ship and ocean engineering virtual simulation, and particularly relates to ocean engineering equipment rigid-flexible multi-body coupling collision dynamics modeling simulation. The problems that an existing simulation method is low in collision detection efficiency and not accurate enough in contact force calculation are solved. The method comprises the following steps: a motion simulation step: performing simulation by adopting an operation equipment time domain motion simulation model, updating an external acting force according to an obtained contact force, solving to obtain the acceleration of the operation equipment, performing integration through a fourth-order Runge-Kutta method to obtain the motion speed and pose of the operation equipment, and completing simulation. The ocean engineering equipment coupling collision dynamics modeling simulation method and device are suitable for dynamics modeling simulation of ocean engineering equipment rigid-flexible multi-body coupling collision.

The invention discloses a multi-brand AGV same-field mixed operation management and control method and device, electronic equipment and a storage medium, and the method comprises the steps: building a standardized data channel with an original scheduling system of each brand AGV, so as to obtain the real-time operation state data and planning path data of each AGV; based on the real-time operation state data and the planned path data, carrying out space intersection judgment on planned paths of all AGVs, and carrying out collision risk initial judgment on AGV pairs with space intersection based on preset limit operation parameters; motion simulation is carried out on the AGV pair with the collision risk through preliminary judgment in the virtual environment based on the actual operation parameters so as to output a quantized collision risk result; and based on the quantized collision risk result, generating an avoidance strategy for the AGV with the low priority in the AGV pair with the collision risk in combination with a preset dynamic priority rule, and issuing and executing a standardized scheduling instruction generated based on the avoidance strategy. According to the invention, safe and efficient cooperative operation of multiple brands of AGVs in a same-field mixed operation environment can be realized.

The invention discloses a golf motion simulation method and system based on digital twinning, and the method comprises the steps: obtaining an original data set containing a timestamp and a space coordinate from the cooperative motion of a plurality of parts and equipment of an athlete body through a sensor network technology in combination with a high-speed image capture device, and obtaining a preliminary multi-source motion information record; aiming at the initial multi-source motion information record, correcting time synchronization deviation and space matching error by adopting a data preprocessing module, and determining a corrected unified data framework by comparing timestamps and coordinate mapping relationships of data sources; according to the corrected unified data framework, a feature extraction algorithm is used for separating and marking the action analysis details and key parameters at the ball hitting moment, and a feature vector set containing the body posture and the equipment state is obtained. According to the invention, a highly vivid virtual environment support is provided for exercise training and match analysis, and the simulation precision and application value of a virtual exercise scene are effectively improved.

The invention relates to the technical field of port operation simulation software systems, and particularly discloses a quay crane operation process simulation system and method for port intelligent driving. The quay crane operation process simulation system comprises a data interaction module, a quay crane motion simulation module, a service simulation module, a simulation control module, an operation backtracking module, an analysis and optimization module and a simulation display module. The method has the beneficial effects that a complex port operation process is completely mapped to a digital space through fine dynamic modeling and coding, a port manager can visually observe and analyze the whole operation process in a virtual environment through full-process digitization, and potential problems can be found and solved in time; based on the constructed 3D simulation environment, natural environment data and random events are combined to carry out work process simulation, meanwhile, simulation data are fed back to a simulation system to carry out closed-loop control, simulation errors are reduced, and the work process simulation authenticity is improved.

The invention relates to the technical field of model construction, in particular to a method for creating an image recognition model based on clinical disease data integration. The method comprises the following steps: acquiring a medical clinical orthopedic image set; the bone density and the bone form of the medical clinical orthopedic image set are extracted, bone structure division is carried out on the medical clinical orthopedic image set, bone structure division images are generated, and the bone structure division images comprise large bone structure images and small bone structure images; analyzing the bone layer thickness of the big bone structure image and performing physical layer thickness compensation reconstruction on the big bone structure image to generate big bone middle virtual slice data; and performing detail guide reconstruction on the small bone structure image to generate small bone fracture texture reconstruction data. According to the invention, through image resolution enhancement, multi-modal data integration, motion simulation and optimization model training, the accuracy of skeleton image dynamic identification is improved.

The invention provides a motion simulation method and system for charged particles in a magnetic field, and the method comprises the steps: substituting the magnetic vector potential of an electromagnetic field where the charged particles are located into an established kinetic equation, solving the kinetic equation, and obtaining the motion trail of the charged particles; the kinetic equation is a Hamiltonian equation corrected by a narrow relativistic added with Lorentz force. The method has the advantages that a more comprehensive simulation method for the movement of the charged particles in the electromagnetic field is constructed, a simulation model based on energy conservation is considered, the divergence behavior of long-period prediction of a simulation system is improved, and long-period and high-precision simulation of the high-speed charged particles in the earth magnetic field is achieved.

The invention discloses a long-distance motion simulation system high-precision positioning and speed fixing method and device, the device comprises a slide rail, a slide table and a long-distance high-precision positioning and speed fixing unit, and the long-distance high-precision positioning and speed fixing unit comprises a photoelectric position marker, a high-speed signal acquisition and processing unit and a photoelectric encoder; when the sliding table passes through the photoelectric potential marker, a reflecting light path of the photoelectric potential marker is formed by using the light reflecting mirror, so that the photoelectric potential marker generates a pulse signal; the high-speed signal acquisition and processing unit acquires pulse signals in real time, marks time stamps on photoelectric potential marker signals acquired in real time, and determines absolute position data of the sliding table at the moment by taking the pulse signals transmitted by the photoelectric potential marker as a reference; the photoelectric encoder transmits a calculated distance value to the high-speed signal acquisition and processing unit; and obtaining real-time position information and instantaneous speed information of each sensing interval and the average speed of each sensing interval according to the absolute position data and the calculated distance value.

The invention discloses a flight simulation model for a variable stability flight simulator and a modeling method. The flight simulation model comprises an interface control module, a variable pneumatic simulation module, a variable flight control simulation module, a physical characteristic simulation module and a six-degree-of-freedom motion simulation module. The interface control module defines external data needing to be received; the variable pneumatic simulation module establishes a pneumatic derivative interpolation table and a pneumatic coefficient expression according to the non-linear pneumatic data packet, and by reconstructing the pneumatic coefficient expression, influences generated by externally configured pneumatic parameters are used as increments to be superposed into pneumatic coefficients; the physical characteristic simulation module outputs the weight and inertia of the airplane; the six-degree-of-freedom motion simulation module calculates the motion state of the aircraft; the variable flight control simulation module constructs flight control laws under different instruction types, and switches corresponding control laws and control gains in real time according to external configuration. Dual adjustment of aerodynamic parameters and flight control laws in the same flight simulation model is realized.

The invention relates to the technical field of textile machinery part manufacturing, in particular to a physical simulation device for a textile crochet hook of a circular knitting machine, which comprises a pay-off roller, a take-up roller and a crochet hook fixing support, a crochet hook is vertically arranged on the crochet hook fixing support, and a tension adjusting assembly is arranged at the lower end of the crochet hook. The pulling force of the doubling thread on the crochet hook is controlled through the pulling force adjusting assembly, a reciprocating mechanism is arranged at the upper end of the pay-off roller and comprises an eccentric wheel assembly and a fabric fixing assembly, and the distance between two fixing points for fixing the doubling thread on the fabric fixing assembly is adjustable. The eccentric wheel assembly drives the fabric fixing assembly to do reciprocating variable motion to simulate working conditions; verification test research in anti-fatigue manufacturing of the crochet hook is carried out, the problems of environmental factors and time cost in the actual use process of the crochet hook are effectively solved, theoretical interface research of contact fatigue and abrasion of the spinning crochet hook is facilitated, and a fatigue and abrasion failure mechanism is obtained based on the crochet hook under different manufacturing conditions.

The invention provides a joint reconstruction full-dimensional operation planning method, system and device based on anatomy biomechanical kinematics and a computer readable storage medium. The method comprises the following steps: acquiring a hip joint CT image of a patient; performing three-dimensional reconstruction based on the hip joint CT image to obtain a hip joint three-dimensional model; performing preoperative planning based on the hip joint three-dimensional model to obtain an initial preoperative planning scheme; after a simulation operation is carried out according to the initial preoperative planning scheme, postoperative motion simulation is carried out on the hip joint femur and the hip joint pelvis, and whether the corresponding normal joint motion range can be reached or not through various motion simulation is judged; and if at least one motion simulation cannot reach the corresponding normal joint motion range, adjusting the initial preoperative planning scheme to obtain a final preoperative planning scheme. According to the embodiment of the invention, preoperative planning can be more accurately carried out.

The invention is suitable for the technical field of wearable equipment, and provides a wearing comfort testing method of wearable equipment and electronic equipment, and the method comprises the steps: wearing the wearable equipment on a simulation human body assembly of a motion simulation device, and when the motion simulation device runs, testing the wearing comfort of the wearable equipment on the simulation human body assembly; acquiring reference position data corresponding to each reference motion capture mark point on the simulated human body assembly, target position data corresponding to each target motion capture mark point on the wearable device and pressure data acquired by each pressure sensor arranged at a wearing position of the wearable device at a preset acquisition frequency; determining a wearing stability index of the wearable device in a preset wearing scene according to each frame of target position data and the reference position data; and determining a wearing pressure index of the wearable device in a preset wearing scene according to each frame of pressure data. Therefore, the influence of subjective feeling on the test result is avoided, repeated verification can be realized, and the test precision of the wearing comfort is improved.

The invention discloses a landslide particle flow and live-action three-dimensional geographical environment analysis method and device, a medium and a product, and relates to the field of geological landslide simulation, and the method comprises the steps: determining a sliding body and a sliding bed region based on digital elevation model data before and after a landslide; establishing a three-dimensional landslide model by adopting a three-dimensional particle flow discrete element PFC3D based on the digital elevation model data before and after the landslide and the sliding mass and sliding bed areas; performing landslide particle motion simulation based on the three-dimensional landslide model; acquiring remote sensing images before and after the landslide; constructing a three-dimensional terrain scene based on a live-action three-dimensional technology according to the remote sensing data and the digital elevation model data of the corresponding period; obtaining and updating particle data according to the landslide particle motion simulation result; performing fusion rendering on the particle data and the three-dimensional terrain scene to obtain a simulation result of superposition of landslide simulation and the three-dimensional scene; the complete process of landslide occurrence can be visually displayed, and damage analysis can be accurately carried out on the landslide.

The invention provides an anthropomorphic motion method and device for a mechanical arm and terminal equipment, and is suitable for the technical field of robot control, the mechanical arm comprises seven joints, and the method comprises the steps that a motion task of the mechanical arm is analyzed, and tail end posture data, corresponding to the motion task, of the mechanical arm is determined; a pre-trained neural network model is used for analyzing the tail end posture data, and the optimal target angle of the seventh joint of the mechanical arm and the corresponding target arm angle are obtained; performing inverse kinematics analysis on the target angle of the seventh joint based on a preset kinematics model to obtain corresponding multiple groups of angle data; and target group angle data with the highest matching degree of the theoretical arm angle and the target arm angle is screened out from the multiple groups of angle data, and the mechanical arm is controlled to move based on the theoretical angle corresponding to each joint in the target group angle data, so that the mechanical arm executes a movement task in a personification movement mode. According to the embodiment of the invention, efficient and reliable anthropomorphic motion simulation can be realized.

The invention relates to the technical field of geological structure deformation simulation, in particular to a method and a device for simulating deformation of a basement involved tectonic zone based on discrete elements, and the method comprises the steps: extracting stratum information of a target area through geological survey and seismic data analysis; defining substrate wall conditions according to substrate activity distribution conditions; setting a target speed according to the multi-stage deformation in the target area; based on the geological parameters, determining particle mesoscopic parameters, and constructing a discrete element model; starting the boundary wall and the foundation wall to move, and simulating the dynamic evolution process of the tectonic zone; and when the contraction amount of the rear edge boundary of the motion plate meets a preset condition, acquiring and analyzing a simulation result based on the motion data of the filling particles. According to the method, by simulating and analyzing various basement involving construction modes, controlling the basement speed boundary conditions, simplifying the model calculation amount of the basement, improving the simulation efficiency and enhancing the result reliability, theoretical and technical supports are provided for oil-gas exploration work of the basement involving tectonic zone.

Sport simulation system. The present disclosure includes disclosure of a sport simulation system, including a box truck comprising a box, a driver-side fold-out configured to extend laterally from the box on a first side, and a passenger-side fold-out configured to extend laterally from the box on a second side opposite the first side, wherein an interior of the box is configured as a sport simulator with a projection screen.

The utility model relates to the technical field of equipment testing, in particular to a passive following type respirator testing device and system.The device comprises a respiration simulation assembly provided with a passive following type respirator; the muscle simulation assembly is connected with the respiration simulation assembly and used for driving the respiration simulation assembly to move and simulating the expiration and inspiration exchange process of the human body based on the movement of the respiration simulation assembly; and the upper computer is communicated with the muscle simulation assembly and is used for inputting a test instruction to enable the muscle simulation assembly to move and outputting a test result of the passive following type respirator according to the test data of the passive following type respirator. Therefore, the problem that the test accuracy is low due to the fact that the simulated lung lacks a power source and the spontaneous respiration state of human muscles cannot be simulated in the prior art is solved.

The invention discloses a fluid internal particle motion simulation method based on CFD-DEM coupling. Comprising the following steps: constructing a three-dimensional model, and exporting the three-dimensional model as a. Step file; grid division is carried out on the solid and the grid between the solid and the drainage basin, and a. Msh file is generated; a dynamic grid motion control file is generated, and a. Model file is reserved; the. Msh file is imported into DEM simulation software, and a. Case file with the initial time being 0 is exported; and performing fluid mechanics and discrete phase calculation on the. Model file in CFD simulation software, and exporting a particle motion track and a variable change curve. According to the method, control over the moving part is more accurate, the movement trend of particles in the three-dimensional model can be accurately simulated, and particle movement simulation animation and variable data of more real points are output; the obtained simulation coupling result not only can judge the movement condition of the abrasive particles, but also can improve the structure according to a fluid mechanics (CFD) calculation result, optimize work and design parameters, reduce power loss and improve transmission performance.

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

A static blade adjusting mechanism motion simulation test bench belongs to the technical field of multi-body dynamics tests and comprises a driving assembly, a transmission assembly, an execution assembly and a measurement assembly. The driving assembly is connected with the transmission assembly, the transmission assembly is connected with the execution assembly, and the measuring assembly is arranged on the transmission assembly and the execution assembly. The driving assembly takes a motor as a power source, drives a triangular crank of the transmission assembly to rotate, further drives a plate type simulation linkage ring of the execution assembly to rotate and translate along an optical axis, and finally drives a plate type simulation blade to perform rotation angle adjustment through a rocker arm by the plate type simulation linkage ring. In the moving process of the stationary blade adjusting mechanism, the rotation angles of the triangular crank, the plate-type simulation blade and the plate-type simulation linkage ring can be measured in real time through angle sensors in the measuring assembly. The characteristics of rotation and translation of the linkage ring are fully considered, the movement of the stationary blade adjusting mechanism can be simulated more truly, and the dynamic characteristics of the stationary blade adjusting mechanism can be reflected more comprehensively.

The invention relates to a landslide disaster-causing effect analysis method considering three-dimensional stability and finite difference, which comprises the following steps: calculating underground water level change under event rainfall in real time through FSLAM, interacting with a stability analysis module, and realizing closed-loop feedback of rainfall infiltration-stability coefficient-motion simulation; and the stability coefficient serves as a strength reduction factor input by Massflow to dynamically adjust material parameters, and full-chain analysis from instability judgment to motion simulation is achieved. By using high-resolution DEM data, the search range of the sliding surface can be dynamically defined, and the sliding surface is a three-dimensional sliding surface, so that modeling of a non-circular surface is supported, and irregular geometrical shapes can be accurately captured. The method overcomes the limitation of simplification of landslide geometry and soil mass mechanical characteristics in traditional two-dimensional analysis, more accurately captures complex mechanical behaviors in the landslide instability process, and improves the reliability of stability calculation.

The invention discloses a numerical simulation method, device and equipment for ice rock collapse starting and a medium, relates to the technical field of fluid motion simulation, and provides an FDEM-SPH coupling framework. Through a CIE unit in the FDEM method, crack propagation and fracture processes in rock masses are accurately simulated, and after the CIE unit is completely fractured, the FDEM method simultaneously simulates various contact forms between two separated finite units, so that mutual movement and interaction between fractured rock masses can be accurately described; ice and snow melting and movement in the ice-water phase change process are simulated through the smoothed particle flow SPH, and meanwhile, the interaction between ice-water phase change and rock mass fracture movement can be quantified by calculating the contact force between virtual particles in the smoothed particle flow SPH and the surface of a finite element in the finite discrete element method FDEM; the interaction reflects the erosion and impact of the ice-water phase change on the rock mass in the whole process and the actual physical condition in the ice rock collapse starting process, so that the ice rock collapse change more fitting the real condition is described.

The invention discloses a cracking type control surface follow-up loading test device and a test method. The cracking type control surface follow-up loading test device comprises a test bed; the control surface simulation unit comprises a simulation control surface base, an upper simulation control surface and a lower simulation control surface; the control surface deflection driving mechanism comprises two groups of control surface driving units, and the two groups of control surface driving units are respectively used for adjusting deflection angles of the upper simulation control surface and the lower simulation control surface; the follow-up loading system comprises two groups of control surface loading units, and the two groups of control surface loading units are respectively used for applying loads to the upper simulation control surface and the lower simulation control surface along the deflection direction of the control surfaces; and the control surface translation driving mechanism is respectively connected with the test bed and the simulation control surface base and is used for driving the control surface simulation unit to move along the horizontal direction. According to the invention, the motion simulation of the cracking control surface in various scenes can be realized, the test requirement of asynchronous loading on the two sides of the control surface can be met, and the device and the method can be suitable for tests of cracking control surfaces in different forms and under different requirements.

The invention discloses a semi-physical simulation system and method for a gliding extended-range guided aircraft. The simulation equipment comprises a rolling motion simulation turntable system, an electric steering engine load simulation system, a sensor measurement system, an information setting module, a gliding extended-range guidance aircraft trajectory calculation module, a data communication module, a data display and system evaluation module and the like. Missile-borne test parts comprise a missile-borne flight control computer and the like. The information setting module sets trajectory initial information and pulling deviation information, and the gliding extended-range guided aircraft trajectory resolving module calculates aircraft trajectory information and sends the aircraft trajectory information to the rolling motion simulation turntable system, the electric steering engine load simulation system and the missile-borne flight control computer; the missile-borne flight control computer performs trajectory control according to a preset control strategy to obtain a lift airfoil angle control instruction, and the lift airfoil angle control instruction is controlled to a target angle by a double-rotation electric steering engine; the data display and evaluation module collects related simulation and control data, and evaluates, detects and optimizes missile-borne tested parts.

The invention discloses a high-precision amphibious vehicle water motion simulation platform construction method and system, and relates to the technical field of vehicle simulation, and the method comprises the steps: obtaining the propulsion system configuration and parameters of an amphibious vehicle, and calculating a thrust database through the computational fluid mechanics principle; based on rigid body and fluid dynamics theories, a water dynamics model and an environment disturbance model are established. A high-precision water dynamics simulation program code is compiled and optimized, and an amphibious vehicle water motion simulation platform is developed in combination with an unreal engine. Based on the method, a high-precision amphibious vehicle water dynamics simulation platform can be established.