PMID- 24612709 OWN - NLM STAT- MEDLINE DCOM- 20150511 LR - 20140627 IS - 1872-7565 (Electronic) IS - 0169-2607 (Linking) VI - 116 IP - 2 DP - 2014 Sep TI - Viscoelastic model based force control for soft tissue interaction and its application in physiological motion compensation. PG - 52-67 LID - S0169-2607(14)00031-5 [pii] LID - 10.1016/j.cmpb.2014.01.017 [doi] AB - Controlling the interaction between robots and living soft tissues has become an important issue as the number of robotic systems inside the operating room increases. Many researches have been done on force control to help surgeons during medical procedures, such as physiological motion compensation and tele-operation systems with haptic feedback. In order to increase the performance of such controllers, this work presents a novel force control scheme using Active Observer (AOB) based on a viscoelastic interaction model. The control scheme has shown to be stable through theoretical analysis and its performance was evaluated by in vitro experiments. In order to evaluate how the force control scheme behaves under the presence of physiological motion, experiments considering breathing and beating heart disturbances are presented. The proposed control scheme presented a stable behavior in both static and moving environment. The viscoelastic AOB presented a compensation ratio of 87% for the breathing motion and 79% for the beating heart motion. CI - Copyright (c) 2014 Elsevier Ireland Ltd. All rights reserved. FAU - Moreira, Pedro AU - Moreira P AD - LIRMM, UMR 5506, CNRS-Universite Montpellier 2, 161 Rue Ada, 34095 Montpellier Cedex 05, France. Electronic address: pedrolfm@ieee.org. FAU - Zemiti, Nabil AU - Zemiti N AD - LIRMM, UMR 5506, CNRS-Universite Montpellier 2, 161 Rue Ada, 34095 Montpellier Cedex 05, France. FAU - Liu, Chao AU - Liu C AD - LIRMM, UMR 5506, CNRS-Universite Montpellier 2, 161 Rue Ada, 34095 Montpellier Cedex 05, France. FAU - Poignet, Philippe AU - Poignet P AD - LIRMM, UMR 5506, CNRS-Universite Montpellier 2, 161 Rue Ada, 34095 Montpellier Cedex 05, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140203 PL - Ireland TA - Comput Methods Programs Biomed JT - Computer methods and programs in biomedicine JID - 8506513 SB - IM MH - Animals MH - Biomechanical Phenomena MH - Biophysical Phenomena MH - Computer Simulation MH - Elasticity MH - Humans MH - *Models, Biological MH - Movement MH - Myocardial Contraction MH - Respiratory Mechanics MH - Robotic Surgical Procedures MH - *Robotics MH - Viscosity OTO - NOTNLM OT - Beating heart surgery OT - Force control OT - Physiological motion compensation OT - Robotically-assisted surgery OT - Soft tissue modeling EDAT- 2014/03/13 06:00 MHDA- 2015/05/12 06:00 CRDT- 2014/03/12 06:00 PHST- 2013/07/29 00:00 [received] PHST- 2013/10/14 00:00 [revised] PHST- 2014/01/27 00:00 [accepted] PHST- 2014/03/12 06:00 [entrez] PHST- 2014/03/13 06:00 [pubmed] PHST- 2015/05/12 06:00 [medline] AID - S0169-2607(14)00031-5 [pii] AID - 10.1016/j.cmpb.2014.01.017 [doi] PST - ppublish SO - Comput Methods Programs Biomed. 2014 Sep;116(2):52-67. doi: 10.1016/j.cmpb.2014.01.017. Epub 2014 Feb 3.