Abstract
In this paper, a Prandtl-Ishlinskii (PI) model-based adaptive feedforward controller is proposed to overcome hysteretic behaviors of a piezoelectric-stack-actuator (PSA)-driven system. The feedforward control design is centered on the PI inverse hysteresis model. In addition, in order to capture the rate-dependent characteristics of the PSA-driven system, a normalized least mean-squares (NLMS) algorithm is adopted to online identify optimal weight vectors of the PI hysteresis models. The identified PI hysteresis model is then utilized to compute the inverse PI model. The feedforward controller can be designed accordingly. Tracking experiments focusing on sinusoidal and random-like signals were performed on a high-stiffness flexible micro-positioning system driven by a PSA. The experimental results show that the tracking accuracy is significantly improved using solely open-loop feedforward control in comparison with traditional open-loop control without compensation.
| Original language | English |
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| Title of host publication | Proceedings - 2016 International Conference on Artificial Intelligence and Robotics, ICAIR 2016 and 2016 International Conference on Automation, Control and Robotics Engineering, CACRE 2016 |
| Editors | Dan Zhang, Marius Balas, Tshilidzi Marwala, Tshilidzi Marwala, Jongwon Kim |
| Publisher | Association for Computing Machinery |
| ISBN (Electronic) | 9781450342353 |
| DOIs | |
| State | Published - 13 07 2016 |
| Externally published | Yes |
| Event | 2016 International Conference on Artificial Intelligence and Robotics, ICAIR 2016 and 2016 International Conference on Automation, Control and Robotics Engineering, CACRE 2016 - Kitakyushu, Japan Duration: 13 07 2016 → 15 07 2016 |
Publication series
| Name | ACM International Conference Proceeding Series |
|---|---|
| Volume | 13-15-July-2016 |
Conference
| Conference | 2016 International Conference on Artificial Intelligence and Robotics, ICAIR 2016 and 2016 International Conference on Automation, Control and Robotics Engineering, CACRE 2016 |
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| Country/Territory | Japan |
| City | Kitakyushu |
| Period | 13/07/16 → 15/07/16 |
Bibliographical note
Publisher Copyright:© 2016 ACM.
Keywords
- Adaptive feedforward control
- Normalized least mean-squares (NLMS)
- Prandtl-Ishlinskii hysteresis model