Tracking Control of a Galfenol-Actuated Nanopositioning Stage Using Feedforward Control with a Disturbance Observer
The main challenge of the galfenol actuator for high-precision positioning is the inherent nonsmooth hysteresis, which may lead to undesirable inaccuracies or oscillations and even instability. The primary aim of this study is to develop a tracking control method to precisely control the output disp...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/3025871 |
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| author | Shiping Jiang Bin Xu Shuxin Liu Wei Zhu |
| author_facet | Shiping Jiang Bin Xu Shuxin Liu Wei Zhu |
| author_sort | Shiping Jiang |
| collection | DOAJ |
| description | The main challenge of the galfenol actuator for high-precision positioning is the inherent nonsmooth hysteresis, which may lead to undesirable inaccuracies or oscillations and even instability. The primary aim of this study is to develop a tracking control method to precisely control the output displacement of a galfenol-actuated nanopositioning stage using feedforward control with a disturbance observer. In order to accurately describe the rate-dependent hysteresis, considering the dynamic behavior of the power amplifier, a novel dynamic model is put forward. Then, a developed controller is designed. In this controller, a feedforward control is developed to compensate the rate-dependent hysteresis, and a disturbance observer is employed to restrain disturbances, high-order unmodeled dynamics, and hysteresis compensation error. The comparative experimental results show that the proposed control method can significantly improve the positioning accuracy and suppress disturbances. This research can be applied in various micro and nanopositioning and vibration control fields. |
| format | Article |
| id | doaj-art-51b06c806a294fd0adcd3614015e1043 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-51b06c806a294fd0adcd3614015e10432025-02-03T01:28:37ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/30258713025871Tracking Control of a Galfenol-Actuated Nanopositioning Stage Using Feedforward Control with a Disturbance ObserverShiping Jiang0Bin Xu1Shuxin Liu2Wei Zhu3Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, Jiangsu, 212013, ChinaSchool of Manufacturing Science and Engineering, Sichuan University, 610065 Chengdu, ChinaThe South Western Technical Institute of Physics, Chengdu 610041, ChinaInstitute of Launch Dynamics, Nanjing University of Science and Technology, Nanjing 210094, ChinaThe main challenge of the galfenol actuator for high-precision positioning is the inherent nonsmooth hysteresis, which may lead to undesirable inaccuracies or oscillations and even instability. The primary aim of this study is to develop a tracking control method to precisely control the output displacement of a galfenol-actuated nanopositioning stage using feedforward control with a disturbance observer. In order to accurately describe the rate-dependent hysteresis, considering the dynamic behavior of the power amplifier, a novel dynamic model is put forward. Then, a developed controller is designed. In this controller, a feedforward control is developed to compensate the rate-dependent hysteresis, and a disturbance observer is employed to restrain disturbances, high-order unmodeled dynamics, and hysteresis compensation error. The comparative experimental results show that the proposed control method can significantly improve the positioning accuracy and suppress disturbances. This research can be applied in various micro and nanopositioning and vibration control fields.http://dx.doi.org/10.1155/2019/3025871 |
| spellingShingle | Shiping Jiang Bin Xu Shuxin Liu Wei Zhu Tracking Control of a Galfenol-Actuated Nanopositioning Stage Using Feedforward Control with a Disturbance Observer Advances in Materials Science and Engineering |
| title | Tracking Control of a Galfenol-Actuated Nanopositioning Stage Using Feedforward Control with a Disturbance Observer |
| title_full | Tracking Control of a Galfenol-Actuated Nanopositioning Stage Using Feedforward Control with a Disturbance Observer |
| title_fullStr | Tracking Control of a Galfenol-Actuated Nanopositioning Stage Using Feedforward Control with a Disturbance Observer |
| title_full_unstemmed | Tracking Control of a Galfenol-Actuated Nanopositioning Stage Using Feedforward Control with a Disturbance Observer |
| title_short | Tracking Control of a Galfenol-Actuated Nanopositioning Stage Using Feedforward Control with a Disturbance Observer |
| title_sort | tracking control of a galfenol actuated nanopositioning stage using feedforward control with a disturbance observer |
| url | http://dx.doi.org/10.1155/2019/3025871 |
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