@poster{drama2020a,
  title = {VP above or below? A new perspective on the story of the virtual point},
  abstract = {The spring inverted pendulum model with an extended trunk (TSLIP) is widely used to investigate the postural stability in bipedal locomotion [1, 2]. The challenge of the model is to define a hip torque that generates feasible gait patterns while stabilizing the floating trunk. The virtual point (VP) method is proposed as a simplified solution, where the hip torque is coupled to the passive compliant leg force via a virtual point. This geometric coupling is based on the assumption that the instantaneous ground reaction forces of the stance phase (GRF) intersect at a single virtual point.
  },
  month = may,
  year = {2020},
  author = {Drama, Özge and Badri-Spr{\"o}witz, Alexander},
  url = {https://www.seas.upenn.edu/~posa/DynamicWalking2020/601-869-1-RV.pdf},
  month_numeric = {5}
}