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Device for building a multilayer structure with storage container or filling container movable along the dispensing container

The invention relates to a device (1) for building a layer body (2) from a plurality of superimposed layers of free-flowing material, in particular particulate material, on a building platform (3) in a build space (4), the layers being solidified and joined to each other in locally predetermined areas, so that at least one layer body (2) is formed by the solidified and joined areas of the layers, including an elongated discharge container (5), which is movable back and forth over the build space (11 [sic; 4]) in at least one discharge direction and which has at least one discharge opening (6) from which the free-flowing material is dischargeable in individual superimposed layers during the movement of the discharge container (5), it being possible to supply the discharge container (5) with free-flowing material from a filling device with at least one storage or filling container (10) having at least one outflow opening (11) by vertically covering the at least one outflow opening (11) of the storage or filling container (10) with an elongated feed opening (12) of the discharge container (5).
The invention provides that the storage or filling container (10) has a shorter extension than the discharge container (5), viewed in the longitudinal direction of the discharge container (5), and the storage or filling container (10) is controllable relative to the discharge container (5), viewed in the longitudinal direction of the discharge container (5), in such a way that the outflow opening (11) of the storage or filling container (10) is guided along the feed opening (12) at least once from one end thereof to the other end thereof.
Owner:VOXELJET AG

Method for planning path for mobile robot based on environmental modeling and self-adapting window

InactiveCN101738195ASolve the problem of generating obstacle avoidance paths in real timeThe problem of real-time generation of obstacle avoidance paths satisfiesInstruments for road network navigationSpecial data processing applicationsSimulationLocal environment
The invention relates to a method for planning a path for a mobile robot based on environmental modeling and a self-adapting window, which relates to a method for planning a real-time path for the mobile robot. The method comprises the following steps of: performing modeling and analysis on a multiple constraint local environment; performing passable analysis; performing safety analysis; performing motion smoothness analysis; performing goal-directed analysis; and performing path planning by adopting the self-adapting window. Because the method has better environmental suitability and obstacle avoiding capacity, the method obtains good safety and reachability, has high calculation real-time property, so the method solves the problem that the mobile robot generates an obstacle avoidance path in real time in an uncertain complex environment, provides a path selection method with optimized integration, better meets the requirements on obstacle avoidance for the mobile robot, realizes the real-time path planning and control of the robot, and provides an effective collision-less path planning method for the navigation application of the mobile robot.
Owner:XIAMEN UNIV
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