PMID- 34720012 OWN - NLM STAT- MEDLINE DCOM- 20220208 LR - 20220208 IS - 2041-3033 (Electronic) IS - 0954-4119 (Linking) VI - 236 IP - 3 DP - 2022 Mar TI - Nonlinear time delay estimation based model reference adaptive impedance control for an upper-limb human-robot interaction. PG - 385-398 LID - 10.1177/09544119211054919 [doi] AB - A nonlinear Time Delay Estimation (TDE) based model reference adaptive impedance controller was developed for Tarbiat Modares University Upper Limbs Rehabilitation Robot (TUERR). The proposed controller uses a stable reference impedance model, which produces desired dynamic relationship between applied force and position error for the robot End-effector to track the desired trajectory. TDE based model reference adaptive controller estimates unknown system dynamics and uncertainties, and the adaption law modifies the controller gains. Using a Lyapunov function was shown trajectory tracking errors in the overall system are bounded. In addition, a performance-based velocity profile proposed to modify the pace of trajectory planning considering the deviation from the desired path. Finally, the performance of the presented controller and rehabilitation process is experimentally investigated for TUERR. FAU - Omrani, Javad AU - Omrani J AUID- ORCID: 0000-0003-0992-0324 AD - Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran. FAU - Moghaddam, Majid M AU - Moghaddam MM AUID- ORCID: 0000-0002-7249-9096 AD - Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran. LA - eng PT - Journal Article DEP - 20211101 PL - England TA - Proc Inst Mech Eng H JT - Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine JID - 8908934 SB - IM MH - Adaptation, Physiological MH - Electric Impedance MH - Humans MH - Mechanical Phenomena MH - *Robotics MH - Upper Extremity OTO - NOTNLM OT - Impedance control OT - Lyapunov stability OT - adaptive control OT - rehabilitation robot EDAT- 2021/11/02 06:00 MHDA- 2022/02/09 06:00 CRDT- 2021/11/01 08:44 PHST- 2021/11/02 06:00 [pubmed] PHST- 2022/02/09 06:00 [medline] PHST- 2021/11/01 08:44 [entrez] AID - 10.1177/09544119211054919 [doi] PST - ppublish SO - Proc Inst Mech Eng H. 2022 Mar;236(3):385-398. doi: 10.1177/09544119211054919. Epub 2021 Nov 1.