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- W4297889579 abstract "In many human-in-the-loop robotic applications such as robot-assisted surgery and remote teleoperation, predicting the intended motion of the human operator may be useful for successful implementation of shared control, guidance virtual fixtures, and predictive control. Developing computational models of human movements is a critical foundation for such motion prediction frameworks. With this motivation, we present a computational framework for modeling reaching movements in the presence of obstacles. We propose a stochastic optimal control framework that consists of probabilistic collision avoidance constraints and a cost function that trades-off between effort and end-state variance in the presence of a signal-dependent noise. First, we present a series of reformulations to convert the original non-linear and non-convex optimal control into a parametric quadratic programming problem. We show that the parameters can be tuned to model various collision avoidance strategies, thereby capturing the quintessential variability associated with human motion. Then, we present a simulation study that demonstrates the complex interaction between avoidance strategies, control cost, and the probability of collision avoidance. The proposed framework can benefit a variety of applications that require teleoperation in cluttered spaces, including robot-assisted surgery. In addition, it can also be viewed as a new optimizer which produces smooth and probabilistically-safe trajectories under signal dependent noise." @default.
- W4297889579 created "2022-10-01" @default.
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- W4297889579 date "2017-01-06" @default.
- W4297889579 modified "2023-10-18" @default.
- W4297889579 title "Stochastic Optimal Control for Modeling Reaching Movements in the Presence of Obstacles: Theory and Simulation" @default.
- W4297889579 doi "https://doi.org/10.48550/arxiv.1701.01547" @default.
- W4297889579 hasPublicationYear "2017" @default.
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