AUTONOMOUS VEHICLE SIMULATION USING MACHINE LEARNING

    公开(公告)号:US20200368906A1

    公开(公告)日:2020-11-26

    申请号:US16417540

    申请日:2019-05-20

    Abstract: In an embodiment, a system calculates a distribution of possible parameters for a simulation that cause the simulation to match a measured behavior in the real world. In an embodiment, the system selects a plurality of simulation parameters based on a statistical distribution that represents an initial estimate of possible parameter values. In an embodiment, using the results produced by the simulation, an updated distribution of possible parameters is constructed based on a density of the results modeled using Fourier features. In an embodiment, the updated distribution of possible parameters can be used to select a particular set of parameters for the simulation, which cause the simulator approximate the measured behavior.

    Semantic rearrangement of unknown objects from natural language commands

    公开(公告)号:US12223949B2

    公开(公告)日:2025-02-11

    申请号:US17930349

    申请日:2022-09-07

    Abstract: A robotic system is provided for performing rearrangement tasks guided by a natural language instruction. The system can include a number of neural networks used to determine a selected rearrangement of the objects in accordance with the natural language instruction. A target object predictor network processes a point cloud of the scene and the natural language instruction to identify a set of query objects that are to-be-rearranged. A language conditioned prior network processes the point cloud, natural language instruction, and the set of query objects to sample a distribution of rearrangements to generate a number of sets of pose offsets for the set of query objects. A discriminator network then processes the samples to generate scores for the samples. The samples may be refined until a score for at least one of the sample generated by the discriminator network is above a threshold value.

    SIMULATING PHYSICAL INTERACTIONS FOR AUTOMATED SYSTEMS

    公开(公告)号:US20230294276A1

    公开(公告)日:2023-09-21

    申请号:US18148548

    申请日:2022-12-30

    CPC classification number: B25J9/1605 B25J9/163 G05B2219/39001

    Abstract: Approaches presented herein provide for simulation of human motion for human-robot interactions, such as may involve a handover of an object. Motion capture can be performed for a hand grasping and moving an object to a location and orientation appropriate for a handover, without a need for a robot to be present or an actual handover to occur. This motion data can be used to separately model the hand and the object for use in a handover simulation, where a component such as a physics engine may be used to ensure realistic modeling of the motion or behavior. During a simulation, a robot control model or algorithm can predict an optimal location and orientation to grasp an object, and an optimal path to move to that location and orientation, using a control model or algorithm trained, based at least in part, using the motion models for the hand and object.

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