Abstract

The present comment concerns the above paper. [DOI: 10.1115/1.4039394]

References

1.
Spyrakos-Papastavridis
,
E.
,
Dai
,
J. S.
,
Childs
,
P. R. N.
, and
Tsagarakis
,
N. G.
,
2018
, “
Selective-Compliance-Based Lagrange Model and Multilevel Non-Collocated Feedback Control of a Humanoid Robot
,”
ASME J Mech. Rob.
,
10
(
3
), p.
031009
.
2.
Lanari
,
L.
,
Sicard
,
P.
, and
Wen
,
J. T.
,
1993
, “
Stability and Performance Analysis of Flexible Joint Robots Under Feedforward Approximations
,”
European Control Conference
,
Groningen, The Netherlands
,
June 28—July 1
,
Vol. 2
, pp.
892
897
.
3.
Sicard
,
P.
,
Wen
,
J. T.
, and
Lanari
,
L.
,
1992
, “
Passivity/Lyapunov Based Controller Design for Trajectory Tracking of Flexible Joint Manipulators
” Cirsee Report #121,
Rensselaer Polytechnic Institute, Electrical, Computer, and Systems Engineering Department
,
New York
.
4.
Battilotti
,
S.
, and
Lanari
,
L.
,
1995
, “
Global set Point Control via Link Position Measurement for Flexible Joint Robots
,”
Syst. Control Lett.
,
25
(
1
), pp.
21
29
.
5.
Lanari
,
L.
,
Sicard
,
P.
, and
Wen
,
J.
,
1993
, “
Trajectory Tracking of Flexible Joint Robots: A Passivity Approach
,”
European Control Conference
,
Groningen, The Netherlands
,
June 28–July 1
, pp.
886
891
.
6.
Bacciotti
,
A.
, and
Rosier
,
A.
,
2005
,
Liapunov Functions and Stability in Control Theory
, 2nd ed,
Springer-Verlag
,
Berlin
.
7.
Khalil
,
H.
,
2002
,
Nonlinear Systems
, 3rd ed,
Prentice Hall
,
Upper Saddle River, NJ
.
8.
Spyrakos-Papastavridis
,
E.
,
Medrano-Cerda
,
G.
,
Tsagarakis
,
N.
,
Dai
,
J.
, and
Caldwell
,
D.
,
2013
, “
Gravity Compensation Control of Compliant Joint Systems With Multiple Drives
,”
IEEE International Conference on Robotics and Automation
,
Karlsruhe, Germany
,
May 6–10
, pp.
4960
4966
.
9.
Spyrakos-Papastavridis
,
E.
,
Medrano-Cerda
,
G.
,
Tsagarakis
,
N.
,
Dai
,
J.
, and
Caldwell
,
D.
,
2013
, “
A Compliant Humanoid Walking Strategy Based on the Switching of State Feedback Gravity Compensation Controllers
,”
IEEE/RSJ International Conference on Intelligent Robots and Systems
,
Tokyo, Japan
,
Nov. 3–7
, pp.
3630
3636
.
10.
De Luca
,
A.
, and
Flacco
,
F.
,
2011
, “
A PD-Type Regulator With Exact Gravity Cancellation for Robots With Flexible Joints
,”
IEEE International Conference on Robotics and Automation
,
Shanghai, China
,
May 9–13
, pp.
317
323
.
11.
Brogliato
,
B.
,
2004
, “
Absolute Stability and the Lagrange-Dirichlet Theorem With Monotone Multivalued Mappings
,”
Systems and Control Letters
,
51
(
5
), pp.
343
353
.
12.
Xie
,
W.
,
Wen
,
C.
, and
Li
,
Z.
,
2001
, “
Input-to-State Stabilization of Switched Nonlinear Systems
,”
Transactions Automatic Control
,
46
(
7
), pp.
1111
1116
.
13.
Spyrakos-Papastavridis
,
E.
,
Kashiri
,
N.
,
Lee
,
J.
,
Tsagarakis
,
N.
, and
Caldwell
,
D.
,
2015
, “
Online Impedance Parameter Tuning for Compliant Biped Balancing
,”
IEEE-RAS 15th International Conference on Humanoid Robots
,
Seoul, South Korea
,
Nov. 3–5
, pp.
210
216
.
14.
Spyrakos-Papastavridis
,
E.
,
Perrin
,
N.
,
Tsagarakis
,
N.
,
Dai
,
J.
, and
Caldwell
,
D.
,
2014
, “
Lyapunov Stability Margins for Humanoid Robot Balancing
,”
IEEE/ RSJ International Conference on Intelligent Robots and Systems
,
Chicago, IL
,
Sept. 14–18
, pp.
945
951
15.
Spyrakos-Papastavridis
,
E.
,
Childs
,
P.
, and
Tsagarakis
,
N.
,
2017
, “
Variable Impedance Walking Using Time-Varying Lyapunov Stability Margins
,”
IEEERAS 17th International Conference on Humanoid Robotics
,
Birmingham
,
Nov. 15–17
, pp.
318
323
.
16.
Medrano Cerda
,
G. A.
,
2018
, “
Remarks on Online Impedance Regulation Techniques for Compliant Humanoid Balancing
,”https://www.researchgate.net/publication/325176462_Remarks_On_Online_impedance_regulation_techniques_for_compliant_humanoid_balancing10.13140/RG.2.2.32761.36963, last modified May 2018, accessed October 2020.
17.
Medrano Cerda
,
G. A.
,
2018
, “
Counter Examples to the Paper Online Impedance Regulation Techniques for Compliant Humanoid Balancing
,” https://www.researchgate.net/publication/325451838_Counter_Examples_to_the_paper_Online_impedance_regulation_techniques_for_compliant_humanoid_balancing, last modified May 2018, accessed October 2020.
18.
Medrano Cerda
,
G. A.
,
2018
, “
Counter Examples Supplementary matlab Files
,” https://www.researchgate.net/publication/325545550_Counter_Examples_Suppl ementary_matlab_Files, last modified May 2018, accessed October 2020.
19.
Medrano Cerda
,
G. A.
,
2018
, “
Comments on Online Impedance Parameter Tuning for Compliant Biped Balancing
,” https://www.researchgate.net/publication/325120005_Comments_On_Online_Impedance_Parameter_Tuning_ for_Compliant_Biped_Balancing, last modified May 2018, accessed October 2020.
20.
Medrano Cerda
,
G. A.
,
2018
, “
Discussion on Variable impedance Walking Using Time-Varying Lyapunov Stability Margins
,” https://www.researchgate.net/publication/325171423_Discussion_On_Variable_impedance_walking_using_Time-Varying_Lyapunov_Stability_Margins, last modified May 2018, accessed October 2020.
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