A. Farrens, A. Zonnino, A. Erwin, M. K. O’Malley, C. L. Johnson, D. Ress, and F. Sergi, “Quantitative testing of fMRI-compatibility of an electrically active mechatronic device for robot-assisted sensorimotor protocols,” IEEE Transactions on Biomedical Engineering, 2017. (In Press, doi: 10.1109/TBME.2017.2741346).
A. Erwin, M. K. O’Malley, D. Ress, and F. Sergi, “Kinesthetic feedback during 2DOF wrist movements via a novel MR-compatible robot,” IEEE Transactions on Neural Systems and Rehabilitation Engineering, vol. 25, no. 9, pp. 1489-1499, 2016.
Dylan P. Losey, A. Erwin, C. G. McDonald, F. Sergi, and M. K. O’Malley, “A time domain approach to control of series elastic actuators: Adaptive torque and passivity-based impedance control,” IEEE/ASME Transactions on Mechatronics, vol. 21, no. 4, pp. 2085-2096, 2016. 2016 IEEE/ASME Transactions on Mechatronics Best Paper Award.
A. Erwin and F. Sup, “A haptic feedback scheme to accurately position a virtual wrist prosthesis using a three-node tactor array,” PLoS One, vol. 10, no. 8, 2015.
F. Sergi, A. Erwin, and M. K. O’Malley, “Interaction control capabilities of an MR-compatible compliant actuator for wrist sensorimotor protocols during fMRI,” IEEE/ASME Transactions on Mechatronics, vol. 20, no. 6, pp. 2678-2690, 2015.
A. U. Pehlivan, F. Sergi, A. Erwin, N. Yozbatiran, G. E. Francisco, and M. K. O’Malley, “Design and validation of the RiceWrist-S exoskeleton for robotic rehabilitation after incomplete spinal cord injury,” Robotica Special Issue, vol. 32, no. 8, pp. 1415-1431, 2014.

A. Erwin, E. Pezent, J. Bradley, and M.K. O’Malley, “The effect of robot dynamics on smoothness during wrist pointing,” IEEE International Conference on Rehabilitation Robotics (ICORR),  pp. 597-602, 2017.
A. Erwin, M. K. O’Malley, D. Ress, and F. Sergi, “Development, control, and MRI-compatibility of the MR-SoftWrist,” IEEE International Conference on Rehabilitation Robotics (ICORR), pp. 187-192, 2015. Best Student Paper Award.
A. Erwin and F. Sup, “Design and perceptibility of a wearable haptic device using low-frequency stimulations on the forearm,” IEEE Haptics Symposium, pp. 505-508, 2014.
F. Sergi, A. Erwin*, B. Cera*, and M. K. O’Malley, “Compliant force-feedback actuation for accurate robot-mediated sensorimotor interaction protocols during fMRI,” IEEE RAS & EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob),  pp. 1057-1062, 2014.
A. Erwin, F. Sergi, V. Chawda, a nd M. K. O’Malley, “Interaction control for rehabilitation robotics via a low-cost force sensing handle,” ASME Dynamic Systems and Control Conference (DSCC),  2013.
F. Sergi, B. Cera, A. Erwin, and M.K. O’Malley, “Interaction control of a linear MR-compatible series elastic actuator,” IEEE EMBS Conference on Neural Engineering, 2013.

*Denotes equal contribution for author position

A. Erwin, “Using custom integrated force sensing mechanisms for interaction control in rehabilitation robots,” M.S. Thesis, Rice University, Houston, Texas, 2014.
A. Erwin, “Development of a haptic feedback device for upper limb amputees,” Undergraduate Honors Thesis, University of Massachusetts Amherst, Amherst, MA, 2012.