Robust direct acoustic impedance control using two microphones for mixed feedforward-feedback controller
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arXiv
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| Format: | Preprint |
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2021
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| _version_ | 1866918274298544128 |
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| author | Volery, Maxime Guo, Xinxin Lissek, Hervé |
| author_facet | Volery, Maxime Guo, Xinxin Lissek, Hervé |
| contents | This paper presents an acoustic impedance control architecture for an electroacoustic absorber combining both a feedforward and a feedback microphone-based strategies on a current-driven loudspeaker. Feedforward systems enable good performance for direct impedance control. However, inaccuracies in the required actuator model can lead to a loss of passivity, which can cause unstable behaviors. The feedback contribution allows the absorber to better handle model errors and still achieve an accurate impedance, preserving passivity. Numerical and experimental studies were conducted to compare this new architecture against a state-of-the-art feedforward control method. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2108_02003 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Robust direct acoustic impedance control using two microphones for mixed feedforward-feedback controller Volery, Maxime Guo, Xinxin Lissek, Hervé Systems and Control This paper presents an acoustic impedance control architecture for an electroacoustic absorber combining both a feedforward and a feedback microphone-based strategies on a current-driven loudspeaker. Feedforward systems enable good performance for direct impedance control. However, inaccuracies in the required actuator model can lead to a loss of passivity, which can cause unstable behaviors. The feedback contribution allows the absorber to better handle model errors and still achieve an accurate impedance, preserving passivity. Numerical and experimental studies were conducted to compare this new architecture against a state-of-the-art feedforward control method. |
| title | Robust direct acoustic impedance control using two microphones for mixed feedforward-feedback controller |
| topic | Systems and Control |
| url | https://arxiv.org/abs/2108.02003 |