Abstract
This paper describes a control method which compensates two factors in a network based control system: one is a time-varying delay on a network communication and the other is a modeling error due to uncertainty of the plant. For the time-varying delay, we model it with an accurate modeling by measuring the individual time delays, and utilize them for the model-based compensator. Because the time delay on the network is not completely uncertain but measurable value. If the values are known and explicitly used for the control, performance improves. In contrast, the perfect dynamics modeling of the plant is very difficult and the real plant may vary its property due to the variation of loads or deterioration through aging, therefore the modeling error is inevitable. The modeling error is considered to be a loop gain variation (multiplicative uncertainty) with phase delay due to the time delay. Therefore, we propose a compensator which is designed based on robust control theory for the uncertainty of the plant. To evaluate the performance of the proposed system, we carried out simulations and experiments on a motor control system. From the results, we verified the stability and satisfactory performance of the system with the proposed methods.
| Original language | English |
|---|---|
| Title of host publication | IECON Proceedings (Industrial Electronics Conference) |
| Pages | 3013-3018 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - 2009 |
| Event | 35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009 - Porto Duration: 2009 Nov 3 → 2009 Nov 5 |
Other
| Other | 35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009 |
|---|---|
| City | Porto |
| Period | 09/11/3 → 09/11/5 |
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ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering
Cite this
Network based control with compensation of time-varying delay and modeling error. / Uchimura, Yutaka; Shimano, Hiroyuki.
IECON Proceedings (Industrial Electronics Conference). 2009. p. 3013-3018 5415275.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Network based control with compensation of time-varying delay and modeling error
AU - Uchimura, Yutaka
AU - Shimano, Hiroyuki
PY - 2009
Y1 - 2009
N2 - This paper describes a control method which compensates two factors in a network based control system: one is a time-varying delay on a network communication and the other is a modeling error due to uncertainty of the plant. For the time-varying delay, we model it with an accurate modeling by measuring the individual time delays, and utilize them for the model-based compensator. Because the time delay on the network is not completely uncertain but measurable value. If the values are known and explicitly used for the control, performance improves. In contrast, the perfect dynamics modeling of the plant is very difficult and the real plant may vary its property due to the variation of loads or deterioration through aging, therefore the modeling error is inevitable. The modeling error is considered to be a loop gain variation (multiplicative uncertainty) with phase delay due to the time delay. Therefore, we propose a compensator which is designed based on robust control theory for the uncertainty of the plant. To evaluate the performance of the proposed system, we carried out simulations and experiments on a motor control system. From the results, we verified the stability and satisfactory performance of the system with the proposed methods.
AB - This paper describes a control method which compensates two factors in a network based control system: one is a time-varying delay on a network communication and the other is a modeling error due to uncertainty of the plant. For the time-varying delay, we model it with an accurate modeling by measuring the individual time delays, and utilize them for the model-based compensator. Because the time delay on the network is not completely uncertain but measurable value. If the values are known and explicitly used for the control, performance improves. In contrast, the perfect dynamics modeling of the plant is very difficult and the real plant may vary its property due to the variation of loads or deterioration through aging, therefore the modeling error is inevitable. The modeling error is considered to be a loop gain variation (multiplicative uncertainty) with phase delay due to the time delay. Therefore, we propose a compensator which is designed based on robust control theory for the uncertainty of the plant. To evaluate the performance of the proposed system, we carried out simulations and experiments on a motor control system. From the results, we verified the stability and satisfactory performance of the system with the proposed methods.
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U2 - 10.1109/IECON.2009.5415275
DO - 10.1109/IECON.2009.5415275
M3 - Conference contribution
AN - SCOPUS:77951592916
SP - 3013
EP - 3018
BT - IECON Proceedings (Industrial Electronics Conference)
ER -