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1 results

  • Movement prediction for a lower limb exoskeleton using a conditional restricted Boltzmann machine

  • Eunsuk Chong, F. C. Park
  • Journal:
    Robotica / Volume 35 / Issue 11 / November 2017
    Published online by Cambridge University Press:
    28 November 2016, pp. 2177-2200

  • We propose a novel class of unsupervised learning-based algorithms that extend the conditional restricted Boltzmann machine to predict, in real-time, a lower limb exoskeleton wearer's intended movement type and future trajectory. During training, our algorithm automatically clusters unlabeled exoskeletal measurement data into movement types. Our predictor then takes as input a short time series of measurements, and outputs in real-time both the movement type and the forward trajectory time series. Physical experiments with a prototype exoskeleton demonstrate that our method more accurately and stably predicts both movement type and the forward trajectory compared to existing methods.