Symmetry Control of Comfortable Vehicle Suspension Based on <i>H</i><i>∞</i>
Suspension is an important part of intelligent and safe transportation; it is the balance point between the comfort and handling stability of a vehicle under intelligent traffic conditions. In this study, a control method of left-right symmetry of air suspension based on <i>H</i><i>...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/14/1/171 |
| _version_ | 1797490042918141952 |
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| author | Jiguang Hou Xianteng Cao Changshu Zhan |
| author_facet | Jiguang Hou Xianteng Cao Changshu Zhan |
| author_sort | Jiguang Hou |
| collection | DOAJ |
| description | Suspension is an important part of intelligent and safe transportation; it is the balance point between the comfort and handling stability of a vehicle under intelligent traffic conditions. In this study, a control method of left-right symmetry of air suspension based on <i>H</i><i>∞</i> theory was proposed, which was verified under intelligent traffic conditions. First, the control stability caused by the active suspension control system running on uneven roads needs to be ensured. To address this issue, a 1/4 vehicle active suspension model was established, and the vertical acceleration of the vehicle body was applied as the main index of ride comfort. <i>H</i><i>∞</i> performance constraint output indicators of the controller contained the tire dynamic load, suspension dynamic stroke, and actuator control force limit. Based on the Lyapunov stability theory, an output feedback control law with <i>H</i><i>∞</i>-guaranteed performance was proposed to constrain multiple targets. This way, the control problem was transformed into a solution to the Riccati equation. The simulation results showed that when dealing with general road disturbances, the proposed control strategy can reduce the vehicle body acceleration by about 20% and meet the requirements of an ultimate suspension dynamic deflection of 0.08 m and a dynamic tire load of 1500 N. Using this symmetrical control method can significantly improve the ride comfort and driving stability of a vehicle under intelligent traffic conditions. |
| first_indexed | 2024-03-10T00:25:38Z |
| format | Article |
| id | doaj.art-56106803343c4828b57209bffa85dae4 |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-10T00:25:38Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-56106803343c4828b57209bffa85dae42023-11-23T15:34:33ZengMDPI AGSymmetry2073-89942022-01-0114117110.3390/sym14010171Symmetry Control of Comfortable Vehicle Suspension Based on <i>H</i><i>∞</i>Jiguang Hou0Xianteng Cao1Changshu Zhan2College of Mechanical and Electrical Engineering, Jilin Province Economic Management Cadre College, Changchun 130022, ChinaSchool of Traffic and Transportation, Northeast Forestry University, Harbin 150040, ChinaSchool of Traffic and Transportation, Northeast Forestry University, Harbin 150040, ChinaSuspension is an important part of intelligent and safe transportation; it is the balance point between the comfort and handling stability of a vehicle under intelligent traffic conditions. In this study, a control method of left-right symmetry of air suspension based on <i>H</i><i>∞</i> theory was proposed, which was verified under intelligent traffic conditions. First, the control stability caused by the active suspension control system running on uneven roads needs to be ensured. To address this issue, a 1/4 vehicle active suspension model was established, and the vertical acceleration of the vehicle body was applied as the main index of ride comfort. <i>H</i><i>∞</i> performance constraint output indicators of the controller contained the tire dynamic load, suspension dynamic stroke, and actuator control force limit. Based on the Lyapunov stability theory, an output feedback control law with <i>H</i><i>∞</i>-guaranteed performance was proposed to constrain multiple targets. This way, the control problem was transformed into a solution to the Riccati equation. The simulation results showed that when dealing with general road disturbances, the proposed control strategy can reduce the vehicle body acceleration by about 20% and meet the requirements of an ultimate suspension dynamic deflection of 0.08 m and a dynamic tire load of 1500 N. Using this symmetrical control method can significantly improve the ride comfort and driving stability of a vehicle under intelligent traffic conditions.https://www.mdpi.com/2073-8994/14/1/171<i>H</i><i>∞</i> output feedbackair suspensionRiccati equationroad disturbance |
| spellingShingle | Jiguang Hou Xianteng Cao Changshu Zhan Symmetry Control of Comfortable Vehicle Suspension Based on <i>H</i><i>∞</i> Symmetry <i>H</i><i>∞</i> output feedback air suspension Riccati equation road disturbance |
| title | Symmetry Control of Comfortable Vehicle Suspension Based on <i>H</i><i>∞</i> |
| title_full | Symmetry Control of Comfortable Vehicle Suspension Based on <i>H</i><i>∞</i> |
| title_fullStr | Symmetry Control of Comfortable Vehicle Suspension Based on <i>H</i><i>∞</i> |
| title_full_unstemmed | Symmetry Control of Comfortable Vehicle Suspension Based on <i>H</i><i>∞</i> |
| title_short | Symmetry Control of Comfortable Vehicle Suspension Based on <i>H</i><i>∞</i> |
| title_sort | symmetry control of comfortable vehicle suspension based on i h i i ∞ i |
| topic | <i>H</i><i>∞</i> output feedback air suspension Riccati equation road disturbance |
| url | https://www.mdpi.com/2073-8994/14/1/171 |
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