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<p>Accurate prediction of human motor actions is essential for developing intuitive, responsive, and adaptive human–machine interaction systems. This study investigates the use of force myography (FMG) to predict knob-turning activity with varying torque values and arm angles. Participants performed knob-turning activities on three spiral springs with different torque values and at four arm angles. A convolution neural network, long short-term memory hybrid classification approach was employed to classify the FMG data and predict torque and arm angle with an overall accuracy of 95.87 ± 2.59% and 94.06 ± 2.44%, respectively. The study also shows that the presence of subcutaneous fat did not significantly affect the classification of torque and arm angle (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(p &gt; 0.05\)</EquationSource> </InlineEquation>, Mann–Whitney U test). These findings demonstrate the potential of FMG as an effective method for accurately predicting activities of daily life involving tasks with varying torque and arm angles.</p>

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Turning a knob: deep learning-based prediction of torque and arm angles using force myography

  • 期刊论文

  • 发表日期：

    2025年12月15日

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  • Ramandeep Singh,
  • Parikshith Chavakula,
  • Joy Chatterjee,
  • Anuj Saini,
  • Deepak Joshi,
  • Ashish Suri

摘要

Accurate prediction of human motor actions is essential for developing intuitive, responsive, and adaptive human–machine interaction systems. This study investigates the use of force myography (FMG) to predict knob-turning activity with varying torque values and arm angles. Participants performed knob-turning activities on three spiral springs with different torque values and at four arm angles. A convolution neural network, long short-term memory hybrid classification approach was employed to classify the FMG data and predict torque and arm angle with an overall accuracy of 95.87 ± 2.59% and 94.06 ± 2.44%, respectively. The study also shows that the presence of subcutaneous fat did not significantly affect the classification of torque and arm angle ( \(p > 0.05\) , Mann–Whitney U test). These findings demonstrate the potential of FMG as an effective method for accurately predicting activities of daily life involving tasks with varying torque and arm angles.