9results about How to "Less freedom" patented technology

This application discloses a low-scaling coarse-grained modeling method and related apparatus based on machine learning, belonging to the field of molecular dynamics simulation technology. The method includes: acquiring full-atom data of the target system; constructing a coarse-grained model to be learned; the potential function form of the coarse-grained model to be learned includes a potential energy expression describing polar correlation interactions, and the coarse-grained model to be learned is a model validated by full-atom data; using the full-atom data as the optimization target, the potential function parameters to be determined in the coarse-grained model to be learned are automatically iteratively optimized using machine learning methods until preset conditions are met, and the optimized coarse-grained model is output. While preserving key electrostatic and dipole physics mechanisms, this method significantly reduces the degrees of freedom of the coarse-grained model and reduces human intervention through a highly automated process, thereby improving the computational efficiency of complex system simulations and enhancing the model's accuracy, stability, and cross-system transferability.

The fluid conveying equipment comprises a medicine storage device, a rotating sleeve, a ratchet wheel, a ratchet wheel transmission part and a power assembly, and a piston rod of the medicine storage device is sleeved with the rotating sleeve in a threaded connection mode; the ratchet wheel is mounted on the rotating sleeve in a circumferential limiting manner; the ratchet wheel transmission part is elastically clamped on the tooth surface of the ratchet wheel; the power assembly is in transmission connection with the ratchet transmission part; wherein the power assembly has a first working mode and a second working mode for continuous operation, and in the first working mode, the power assembly drives the ratchet wheel transmission part to perform first movement and is in linkage with the ratchet wheel to rotate by a first angle in the preset direction; in the second working mode, the power assembly drives the ratchet wheel transmission part to conduct second movement and is in linkage with the ratchet wheel to rotate by a second angle in the preset direction. In this way, the structure of the fluid conveying equipment can be simplified, the size is reduced, and the control precision and reliability of the fluid conveying equipment during working are improved.

The present application relates to the technical field of vehicles, in particular to a load wheel chain assembly, comprising a load wheel and a load wheel suspension, the load wheel is installed on the load wheel suspension, the load wheel suspension is sequentially connected in series, forming a flexible load wheel chain assembly. The load wheel chain assembly can be used as a load wheel and a supporting belt wheel, and can guide the rubber track by limiting the lateral displacement (along the width direction of the track) of the rubber track, thereby avoiding the occurrence of the off-track condition. The flexible form of the load wheel chain assembly can make the ground contacting part of the walking system better adapt to the change of the terrain, and facilitate the adjustment of the ground contacting area of the walking system.

A solid-liquid bundled rocket structure simplified modeling method, comprising: establishing a rocket structure three-dimensional finite element model, the rocket structure three-dimensional finite element model comprising a main structure model and a secondary structure model of a rocket body; for the main structure model of the rocket body, according to the type of the main structure model of the rocket body, simplifying the type of the main structure model of the rocket body into a low-dimensional model; for the secondary structure model of the rocket body, according to the type of the secondary structure model of the rocket body, simplifying the type of the secondary structure model of the rocket body into a particle element model; simplifying each main structure model and each secondary structure model of the rocket body, and connecting the obtained low-dimensional model and particle element model according to the corresponding relationship of the rocket structure three-dimensional finite element model to obtain a rocket structure simplified model.

The utility model discloses a bionic aquatic plant riverway purification device which comprises guide grooves and bionic aquatic plants which are arranged on two sides of a riverway, the guide grooves are formed by pouring concrete, matched buoyancy tanks are arranged in the guide grooves, a telescopic frame is connected between the two opposite buoyancy tanks, the telescopic frame comprises a shear fork mechanism and a plurality of cross rods, and the shear fork mechanism is connected with the bionic aquatic plants. The transverse rod is longitudinally connected between two opposite hinge points of the shear fork mechanism, a transverse through round hole is formed in the support and used for being connected with a transverse first pull rope in a penetrating mode, an aeration pipe is installed on the riverbed under the telescopic frame, and a plurality of transverse second pull ropes are connected into the aeration pipe; the first pull ropes and the second pull ropes are vertically opposite one by one, a plurality of uniformly distributed bionic aquatic plants are connected between the first pull ropes and the second pull ropes, and a plurality of uniformly distributed rotary aeration discs are mounted on the aeration pipe. The bionic aquatic plants are arranged between the telescopic frame and the aeration mechanism, the freedom degree of the bionic aquatic plants is reduced, the winding probability is reduced, and meanwhile aeration can promote growth and reproduction of aerobic bacteria on the bionic aquatic plants.

The present application relates to a kind of heavy load equal material forming robot real-time dynamics digital twin system modeling method, comprising the following steps: S1, only considering the dynamics model of heavy load equal material forming robot of link elastic deformation is established;S2, construct multi-sensor distributed force / position interactive measurement system, arrange grating ruler, encoder, pressure sensor, data fusion is carried out in combination with Kalman filter;S3, PID algorithm is embedded into control system, realizes the closed-loop control of motion trajectory tracking and force feedback;S4, establish the digital twin framework including five dimensions of physical entity, virtual entity, digital data, connection and service.The present application realizes the five-dimensional digital twin system of heavy load equal material forming robot, provides the overall view of robot dynamics through the interaction of physical space and network space, overcomes the problems such as large resource consumption and response delay of high-fidelity simulation.

The invention relates to the technical field of human body assistance, in particular to a leg assistance mechanism which comprises a driving assembly, a first transmission assembly, a second transmission assembly, a third transmission assembly and a first supporting piece, and the driving assembly is in transmission connection with one end of the first transmission assembly and can drive the first transmission assembly to rotate around a first axis. One end of the second transmission assembly is connected with the other end of the first transmission assembly, and the second transmission assembly can rotate around a second axis relative to the first transmission assembly. The third transmission assembly is connected with the other end of the second transmission assembly and can rotate around a third axis relative to the second transmission assembly. The second axis is perpendicular to the first axis and the third axis in different planes, and an included angle smaller than 90 degrees is formed between the third axis and the first axis. The first supporting piece is installed on the third transmission assembly. According to the leg assisting mechanism, distortion of the walking posture of a user after the leg assisting mechanism is worn can be reduced.

The application discloses a device and a method for measuring deformation of a nuclear fuel assembly underwater. The device comprises an underwater measuring mechanism, a water surface driving mechanism, a control box and an upper computer. The underwater measuring mechanism comprises a rack, clamping components, supporting components and a plurality of measuring components. The rack comprises a plurality of layers of supports provided with through holes or through grooves. The supporting components are arranged at the bottom of the rack and have a supporting position and a retracted position relative to the rack. The clamping components are arranged at the upper part of the rack and have a clamping position and a releasing position relative to the rack. The plurality of measuring components are arranged on corresponding supports along the height direction of the nuclear fuel assembly to be measured. The water surface driving mechanism is connected with the underwater measuring mechanism. The control box is connected with the water surface driving mechanism and the underwater measuring mechanism. The upper computer is used for verifying deformation data of the nuclear fuel assembly to be measured through a redundancy algorithm, data fitting and three-dimensional deformation model reconstruction, obtaining and displaying the deformation amount of the nuclear fuel assembly to be measured. The application further provides a method for measuring deformation of a nuclear fuel assembly underwater.

The invention discloses a rigidity mass matching and structure optimization design method and system for an AC swing head. The method comprises the steps that S1, the AC swing head is divided into a plurality of substructures; s2, establishing a substructure dynamic model and extracting a stiffness matrix and a mass matrix of each substructure; s3, constructing an agent model of the stiffness matrix and the mass matrix of the substructure about stiffness and mass parameters of each structural member; s4, constructing an AC head swinging dynamic model; s5, identifying a weak structural member by adopting a sensitivity analysis method; s6, establishing a weak structural member multi-objective optimization model and solving an optimal sub-structure rigidity and mass matrix; s7, constructing a neural network agent model between the size parameters of the weak structural member and the stiffness / mass matrix of the substructure; and S8, taking the optimal sub-structure rigidity and mass matrix obtained in the step S6 as a target matrix, taking the size parameter of the weak structural member as a design variable, adopting an optimization algorithm, and realizing size optimization by minimizing the difference between the target matrix and the optimized matrix.