TY - GEN
T1 - Analysis of bilateral systems with time delay
AU - Natori, Kenji
AU - Katsura, Seiichiro
AU - Tsuji, Toshiaki
AU - Ohnishi, Kouhei
PY - 2005
Y1 - 2005
N2 - Bilateral control is an effective method for reproduction of tactile sense. Therefore many researches have been conducted so far. That is about not only stability but also performance. In this paper, one of evaluation indices of bilateral systems, "Transparency" is applied to the case with time delay. Both master and slave site of the system used in this research come with acceleration control system by disturbance observer. Therefore the system is very robust to disturbance and parameter variation. The relation of force and position information of both master and slave is formulated using hybrid matrix. Then frequency responses of the elements of hybrid matrix are analyzed taking band-width of disturbance observer and reaction force observer, time delay into account. From those frequency responses, it is found out that there exists unfamiliar phenomenon (an infinite number of resonances) induced by the dimensionless characteristic of time delay. Therefore the relation of time delay and the phenomenon is discussed and clarified using Pade approximation. Then using the result, new stabilization method is proposed. It is based on phase-lead compensation.
AB - Bilateral control is an effective method for reproduction of tactile sense. Therefore many researches have been conducted so far. That is about not only stability but also performance. In this paper, one of evaluation indices of bilateral systems, "Transparency" is applied to the case with time delay. Both master and slave site of the system used in this research come with acceleration control system by disturbance observer. Therefore the system is very robust to disturbance and parameter variation. The relation of force and position information of both master and slave is formulated using hybrid matrix. Then frequency responses of the elements of hybrid matrix are analyzed taking band-width of disturbance observer and reaction force observer, time delay into account. From those frequency responses, it is found out that there exists unfamiliar phenomenon (an infinite number of resonances) induced by the dimensionless characteristic of time delay. Therefore the relation of time delay and the phenomenon is discussed and clarified using Pade approximation. Then using the result, new stabilization method is proposed. It is based on phase-lead compensation.
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U2 - 10.1109/ISIE.2005.1529156
DO - 10.1109/ISIE.2005.1529156
M3 - Conference contribution
AN - SCOPUS:33748373181
SN - 0780387384
SN - 9780780387386
T3 - IEEE International Symposium on Industrial Electronics
SP - 1511
EP - 1516
BT - Proceedings of the IEEE International Symposium on Industrial Electronics 2005, ISIE 2005
T2 - IEEE International Symposium on Industrial Electronics 2005, ISIE 2005
Y2 - 20 June 2005 through 23 June 2005
ER -