Robot navigation using a high-level policy model and a trained low-level policy model

    公开(公告)号:US12061481B2

    公开(公告)日:2024-08-13

    申请号:US17291540

    申请日:2019-11-27

    Applicant: GOOGLE LLC

    CPC classification number: G05D1/0221

    Abstract: Training and/or using both a high-level policy model and a low-level policy model for mobile robot navigation. High-level output generated using the high-level policy model at each iteration indicates a corresponding high-level action for robot movement in navigating to the navigation target. The low-level output generated at each iteration is based on the determined corresponding high-level action for that iteration, and is based on observation(s) for that iteration. The low-level policy model is trained to generate low-level output that defines low-level action(s) that define robot movement more granularly than the high-level action—and to generate low-level action(s) that avoid obstacles and/or that are efficient (e.g., distance and/or time efficiency).

    ROBOT NAVIGATION USING A HIGH-LEVEL POLICY MODEL AND A TRAINED LOW-LEVEL POLICY MODEL

    公开(公告)号:US20210397195A1

    公开(公告)日:2021-12-23

    申请号:US17291540

    申请日:2019-11-27

    Applicant: GOOGLE LLC

    Abstract: Training and/or using both a high-level policy model and a low-level policy model for mobile robot navigation. High-level output generated using the high-level policy model at each iteration indicates a corresponding high-level action for robot movement in navigating to the navigation target. The low-level output generated at each iteration is based on the determined corresponding high-level action for that iteration, and is based on observation(s) for that iteration. The low-level policy model is trained to generate low-level output that defines low-level action(s) that define robot movement more granularly than the high-level action—and to generate low-level action(s) that avoid obstacles and/or that are efficient (e.g., distance and/or time efficiency).

    CONTROLLING A ROBOT BASED ON FREE-FORM NATURAL LANGUAGE INPUT

    公开(公告)号:US20210086353A1

    公开(公告)日:2021-03-25

    申请号:US17040299

    申请日:2019-03-22

    Applicant: Google LLC

    Abstract: Implementations relate to using deep reinforcement learning to train a model that can be utilized, at each of a plurality of time steps, to determine a corresponding robotic action for completing a robotic task. Implementations additionally or alternatively relate to utilization of such a model in controlling a robot. The robotic action determined at a given time step utilizing such a model can be based on: current sensor data associated with the robot for the given time step, and free-form natural language input provided by a user. The free-form natural language input can direct the robot to accomplish a particular task, optionally with reference to one or more intermediary steps for accomplishing the particular task. For example, the free-form natural language input can direct the robot to navigate to a particular landmark, with reference to one or more intermediary landmarks to be encountered in navigating to the particular landmark.

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