18 results about "Mobile grid" patented technology

The invention relates to the field of vacuum circuit breakers, in particular to a vacuum circuit breaker opening and closing dynamic characteristic calculation method, device and equipment and a medium. Establishing a three-dimensional geometric model of the pole-mounted vacuum circuit breaker arc extinguish chamber and the moving and static contacts; setting material attributes for each part in the three-dimensional geometric model; constructing a multi-physics field coupling system; the area where the moving contact is located is divided into movable grids, and the grid density of the moving contact and the grid density of the static contact dynamically change along with time; and performing multi-field coupling transient solution according to the three-dimensional geometric model, the multi-physical field coupling system and the movable grid to obtain the dynamic characteristics of the vacuum circuit breaker. The electromagnetic field, the thermal field, the fluid field, the structure field and the circuit are subjected to full coupling analysis, multi-physical field strong coupling dynamic simulation of the whole opening and closing process is achieved, and the dynamic characteristics of the whole opening and closing process can be accurately calculated.

The invention belongs to the technical field of optical absorption cell parameter design, and particularly relates to an optical absorption cell design method and system based on PSO particle swarm optimization, and the method comprises the steps: S1, building a PSO model, defining each particle as an optical path, setting the number of particles and the maximum number of iterations, discretizing an absorption cell optical mirror surface into a movable grid, and defining the moving direction of the particles; s2, initializing the position and speed of a particle swarm based on the curvature radius, spacing and incident angle parameters of a reflector of the absorption cell; s3, performing optical simulation on each particle, and calculating a fitness value reflecting the optical length, the absorption cell volume and the light spot coverage based on a simulation result; updating an individual historical optimal path and a global historical optimal path; s3 is repeated after the speed and the position are updated and the state of each particle is adjusted; and S4, outputting the optical length, the volume and the lens number of the absorption cell corresponding to the final global optimal path. According to the method, efficient search can be carried out in the parameter space, and a globally optimal or approximately optimal solution is found.

A gripping device for being suspended from a load handling device for lifting and moving containers stacked in stacks in a grid storage structure including a plurality of tracks arranged in a grid pattern above the stacks of containers. The gripping device includes a frame; a gripping mechanism mounted on the frame configured to releasably grip a container from below the frame; a fixing device mounted on the frame configured to fix a free end of a reeled cable; and a cable tensioner configured to put the cable under tension in use. The cable tensioner includes a track; a carriage slidably mounted on the track; and a biasing device configured to bias the carriage.

The present application relates to the technical field of robot workstation, specifically to a grid 3D laser robot welding workstation, which comprises a mobile base, a regulating component is arranged in the mobile base, a bearing component is arranged on the regulating component, a control device is arranged above the bearing component, a laser robot is arranged on the control device, inclined components are uniformly arranged around the lower part of the laser robot, and the control device comprises a matching component and an intermittent component. Through the work of the bearing component and the control device, the angle of the grid can be adjusted synchronously according to the welding angle of the robot, and the grid can be automatically moved when the robot needs to weld a position far away, so that the welding quality and convenience are greatly improved.

A method includes receiving an electrocardiogram signal obtained of a subject. The method also includes displaying the electrocardiogram signal over a grid on a display. The grid includes both vertical lines and horizontal lines that define a first of plurality of squares and a second plurality of smaller squares within each square of the first plurality of squares. Both the first plurality of squares and the second plurality of smaller squares represent an interval of time in a horizontal direction. Both the first plurality of squares and the second plurality of squares represent a voltage or electrical potential level in a vertical direction. The method further includes independently moving either the electrocardiogram signal relative to the grid or the grid relative to the electrocardiogram signal to align the electrocardiogram signal with an outer edge of a respective square of the first plurality of squares in response to a user input.

The present disclosure is directed to a mesh node to enhance a Wi-Fi connection throughput in an area with a weak coverage of an access point (AP). The mesh node provides an intermediate communication node that is moving to locations of the area which needs an improvement of the Wi-Fi connection throughput. A docking station is fixed in each location with a weak Wi-Fi connection throughput to provide a long-term energy source for the mesh node. Each docking station includes a power source to be coupled to the mesh node. The mesh node includes a transit power supply which provides a sufficient electrical energy during movements of the mesh node from a first location to a second location. Thus, the mesh node is capable of maintaining the Wi-Fi connection even during the movements between some locations.

The invention discloses a method for constructing a temperature field simulation model of an aluminum-steel arc welding-brazing workpiece, and relates to the technical field of welding machining.According to the method, aluminum metal and a steel substrate are modeled into solids, arc plasma in welding is modeled into fluid, meanwhile, an arc is modeled into an arc computational domain, and the temperature field simulation model of the aluminum-steel arc welding-brazing workpiece is obtained. The electric arc computational domain is set as a moving grid, and the moving grid can move along the modeled workpiece body and conduct heat transfer; then, in simulation software, energy and momentum source items representing the fluid flowing and fluid heat transfer process and the solid heat transfer process are added to the fluid and the solid, that is to say, welding parameters, namely the welding current, the welding speed and the shielding gas flow in the welding process, can be obtained in the heat transfer process of analogue simulation only by obtaining the welding parameters, namely the welding current, the welding speed and the shielding gas flow in the welding process. Heat transfer is directly simulated through a moving grid equivalent to an electric arc computational domain to calculate the electric arc temperature, the workpiece temperature and a welding thermal cycle curve of any point, and the experiment cost can be greatly reduced.

The application discloses a rhombicuboctahedron mobile robot, which comprises first to sixth vertex units and first to twelfth driving units, the first to sixth vertex units are connected through the driving units, in the initial state, each unit presents a quadrilateral shape, the whole robot is in the shape of a rhombicuboctahedron, a deformation mode of face center driving is adopted, the deformation of each single degree of freedom quadrilateral unit is realized by controlling the steering angle of a steering wheel, and then the overall deformation is realized, the robot can roll and move by taking the triangular face composed of the quadrilateral link units or the rods as support, rich deformation and movement modes can be realized, the spherical shape can make the robot realize rapid movement, and the grid structure makes the robot have high rigidity and environmental adaptability, and the application can be used for unmanned detection tasks in a field environment.

The utility model discloses a color recognizer for an automatic cloth rolling machine, which comprises a cloth rolling device and is characterized in that square steel is erected on the front side of the top end of the cloth rolling device, a moving lattice is arranged in the middle of the front side of the square steel, a mounting block is mounted on the outer surface of the square steel, a groove is formed in the mounting block, and the moving lattice is arranged in the groove. A motor is mounted at the bottom of the mounting block, a rotating shaft is mounted at the top end of the motor, a gear is mounted at the top end of the rotating shaft, a color recognition device is mounted at the front end of the mounting block, a closing block is mounted at the rear end of the mounting block, a hinge is mounted at the top end of the closing block, and a plug pin is mounted at the bottom end of the closing block. A worker controls the motor to run left and right through the controller, so that the color recognition device can horizontally move left and right to the boundary of the double-color cloth to recognize and position the color, a large amount of manpower and time are saved, and the working efficiency is improved.

The utility model is suitable for sewage cleaning technical field provides a mobile grid cleaner, including baffle, the baffle is provided with two groups, two groups baffle between installing fixed plate, the top of baffle installs gantry. The utility model provides a mobile grid cleaner, the grid frame is driven by second motor and makes the whole body on the support plate slide, thereby realizes the mobile cleaning of dirt, through setting up first motor drive screw rod rotation to make the grid frame lift, this setting can facilitate the dirt between the grid frame and baffle and pull out, and the connecting plate can scrape off the dirt in the gap of grid frame when the grid frame is lifted, realize the quick cleaning of grid frame, through setting up photovoltaic board charges the battery, so that the device need not to hitch up line power on, improve the flexibility that the device uses, and reach the purpose of energy saving, the length of support plate overlap can increase or decrease, convenient to use in different length's sink.

This invention discloses a finite element simulation method, apparatus, system, and storage medium for enhanced electromagnetic tracks, comprising: Step S1, generating electromagnetic force through an electromagnetic module when the projectile is in its initial position and current is applied; wherein, the performance enhancement of the track is achieved through the cyclic flow of current in the enhanced track; and the contact resistance is simulated through a weak contribution form of the contact resistance; Step S2, installing the armature into the track through an interference fit using a mechanical module, the electromagnetic force causing the armature to acquire acceleration and velocity; wherein, the armature movement generates displacement, leading to mesh deformation; Step S3, controlling the armature displacement by moving the mesh. Using the technical solution of this invention, there is no need to establish a contact layer, greatly reducing the computational complexity; simultaneously, the enhancement effect of parallel enhanced tracks can be quantitatively evaluated.

The invention relates to the technical field of robot navigation, and discloses a path planning method based on fusion of a zero neural network and a resistance network. According to the method, a robot working area is dispersed into a grid map, the mapping relation between the grid map and a time-varying conical curved surface resistance network is established, obstacle grids correspond to disconnection resistors, and a starting point and an ending point correspond to a current injection point and a current outflow point respectively; constructing a fast zero neural network based on the resistance network mathematical model, and solving time-varying potential of each node; starting from the starting point by the robot, screening candidate nodes at the current grid position, determining the next step of moving the grid by combining the time-varying potential and the direction deviation of the candidate nodes, and repeating until the robot arrives at the terminal point. The real-time performance and the dynamic adaptability of path planning are improved, the local optimal solution is effectively avoided, the path planning is stable and reliable, and the method is suitable for various complex operation scenes.

A storage and retrieval system 50 comprises a track system 115 with a plurality of grid members / tracks / rails 22 forming a grid pattern with a plurality of grid cells or spaces 24. At least one ver

The invention discloses an FDM-FPM coupling simulation method suitable for a dynamic boundary, and belongs to the field of computational fluid mechanics. According to the method, aiming at the problems of insufficient precision, large interpolation error and the like in multi-scale structure simulation of a traditional SPH method, a high-precision finite difference method is adopted for solving in a fluid mainstream region, and an FPM method is adopted for Lagrange particle calculation in an external region. According to the method, in viscous incompressible fluid and fluid-solid coupling simulation, an improved Navier-Stokes control equation is adopted, a moving grid mechanism is introduced, and accurate coupling and synchronous evolution between a flow field and structural motion are achieved. The method can effectively improve the simulation precision and the calculation efficiency, and is suitable for fluid-solid coupling scenes including mobile rigid grids and large displacement structures.

According to an aspect, there is provided a device and method for manipulating a sample droplet. The method comprises disposing a sample droplet onto a movement grid, moving the sample droplet along a path by electrowetting-on-dielectric forces. The path includes a divider that divides the sample droplet into at least a retained volume to be held in a retaining area and a remainder volume to be moved along the path. The movement grid includes a top layer and a bottom layer, the bottom layer comprising a dielectric layer coated with a bottom hydrophobic layer, the top layer comprising a conductive top plate coated with a top hydrophobic layer, the top layer and the bottom layer defining a cavity, and selectively actuatable regions of the dielectric layer for moving a sample droplet within the cavity via electrowetting-on-dielectric forces.

Systems and methods for industrial power delivery can include an electrical combiner system. The system can include a housing, a first breaker, a second breaker, and a network device. The first breaker is in communication with a first power source and comprises a first programmable controller. The second breaker is in communication with a second power source and comprises a second programmable controller. A site controller is in electronic communication with the first breaker and the second breaker, and is configured to synchronize a voltage of the first power source and a voltage of the second power source.

This multi-microgrid bidirectional time-of-use electricity price optimization method, based on a multi-level game, first designs a bidirectional time-of-use electricity price incentive mechanism for both generators and users in a multi-microgrid system-based electricity energy transaction. Secondly, a multi-level differentiated game model is established, with generators, mobile grid communication centers (MGCCs), and microgrid users as the main actors, coupling non-cooperative and master-slave game strategies. Finally, a two-layer particle swarm optimization algorithm combined with a Cplex solver is used to solve the established multi-level game model, resulting in an optimal bidirectional time-of-use electricity price optimization strategy. This proposed time-of-use electricity price optimization method can optimize energy management, reduce system operating costs and user electricity costs, and improve the economic benefits of generators.

A parallel coupled material point finite difference finite element simulation method is applied to material explosion simulation, the method comprises the following steps: generating a background grid, each background grid comprising a plurality of material points, initializing material information of the material points, the material information comprising at least one of mass, momentum, density, stress and strain, and deformation gradient information; initializing a rod element; based on the finite difference finite element method, parallel simulation and communication between each background grid; moving grid data, including the movement of the material points and the movement of the rod element. The method can improve the simulation accuracy when facing small deformation problems, making the simulation more in line with the actual situation.