Department of Mechanical Engineering 445 Goodwin Hall (0238) 635 Prices Fork Road Blacksburg, Virginia 24061 540/231-7183 Fax: 540/231-0422 Jan 10, 2023 Dear Mr. Jamal Chen, We would like to thank you for organizing the reviewers and are pleased to resubmit this manuscript titled “Design and Validation of a Low-Level Controller for Hierarchically-Controlled Exoskeletons” authored by C. W. Herron, Z. J. Fuge, M. Kogelis, N. J. Tremaroli, B. Kalita, and A. Leonessa for further consideration of publication in Special Issue named “Medical Robotics 2022-23” of the journal “Sensors”. We would also like to thank the reviewers for their dedicated effort in assessing and investigating our work. We reviewed every comment and incorporated all the suggestions to the best of our ability in the revised version of the manuscript. In the postscript of this letter, we have attached all the detailed itemized responses to each of the comments along with the portions of the paper that were altered for each of the reviewers. In addition, a revised version of the manuscript has been provided for your convenience. Best, Connor Herron (Corresponding Author) Attachments: Response to Reviewer 1 Response to Reviewer 2 Response to Reviewer 3 Response to Reviewer 4 Revised Manuscript