Application of Gap Metric to LADRC Design in Multilinear Model of SDR
The solid ducted rocket ramjet (SDR) system faces many disturbances in the process of operation, and the linear active disturbance rejection controller (LADRC) has been widely used in engineering to solve such problems. However, the SDR also has strong nonlinearity, which brings a great challenge to...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/2669954 |
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| _version_ | 1832554949523800064 |
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| author | Hongfu Wang Qinghua Zeng An Wang Zongyu Zhang |
| author_facet | Hongfu Wang Qinghua Zeng An Wang Zongyu Zhang |
| author_sort | Hongfu Wang |
| collection | DOAJ |
| description | The solid ducted rocket ramjet (SDR) system faces many disturbances in the process of operation, and the linear active disturbance rejection controller (LADRC) has been widely used in engineering to solve such problems. However, the SDR also has strong nonlinearity, which brings a great challenge to the application of the LADRC in the gas flow regulation of the SDR. And the problem of fast adjustment of the “compensation factor” is one of the main difficulties in LADRC. In this paper, under the LADRC frame, the gas generator system’s closed-loop stability of the SDR was analyzed and the range of compensation factors had been calculated, and then, the “gap factor” was introduced and the “cross-iteration” method was used to quickly map out the “compensation factor” in the multilinear model controller based on the variation of the zero-point position of the system and the gap metric between adjacent set points. This greatly simplifies the parameter tuning process of the LADRC when it was applied to strongly nonlinear systems. Finally, through the comparison of simulation with adaptive PI controller and model-assisted LADRC (M-LADRC), the results have shown that the control method designed in this paper can obtain satisfactory performance and has a good engineering application prospect. |
| format | Article |
| id | doaj-art-eba52ffa063f4103b40430e253a17219 |
| institution | Kabale University |
| issn | 1687-5974 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-eba52ffa063f4103b40430e253a172192025-02-03T05:50:04ZengWileyInternational Journal of Aerospace Engineering1687-59742022-01-01202210.1155/2022/2669954Application of Gap Metric to LADRC Design in Multilinear Model of SDRHongfu Wang0Qinghua Zeng1An Wang2Zongyu Zhang3College of Aeronautics and AstronauticsCollege of Aeronautics and AstronauticsInstitute of Air and Space TechnologyCollege of Aeronautics and AstronauticsThe solid ducted rocket ramjet (SDR) system faces many disturbances in the process of operation, and the linear active disturbance rejection controller (LADRC) has been widely used in engineering to solve such problems. However, the SDR also has strong nonlinearity, which brings a great challenge to the application of the LADRC in the gas flow regulation of the SDR. And the problem of fast adjustment of the “compensation factor” is one of the main difficulties in LADRC. In this paper, under the LADRC frame, the gas generator system’s closed-loop stability of the SDR was analyzed and the range of compensation factors had been calculated, and then, the “gap factor” was introduced and the “cross-iteration” method was used to quickly map out the “compensation factor” in the multilinear model controller based on the variation of the zero-point position of the system and the gap metric between adjacent set points. This greatly simplifies the parameter tuning process of the LADRC when it was applied to strongly nonlinear systems. Finally, through the comparison of simulation with adaptive PI controller and model-assisted LADRC (M-LADRC), the results have shown that the control method designed in this paper can obtain satisfactory performance and has a good engineering application prospect.http://dx.doi.org/10.1155/2022/2669954 |
| spellingShingle | Hongfu Wang Qinghua Zeng An Wang Zongyu Zhang Application of Gap Metric to LADRC Design in Multilinear Model of SDR International Journal of Aerospace Engineering |
| title | Application of Gap Metric to LADRC Design in Multilinear Model of SDR |
| title_full | Application of Gap Metric to LADRC Design in Multilinear Model of SDR |
| title_fullStr | Application of Gap Metric to LADRC Design in Multilinear Model of SDR |
| title_full_unstemmed | Application of Gap Metric to LADRC Design in Multilinear Model of SDR |
| title_short | Application of Gap Metric to LADRC Design in Multilinear Model of SDR |
| title_sort | application of gap metric to ladrc design in multilinear model of sdr |
| url | http://dx.doi.org/10.1155/2022/2669954 |
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