μ-Synthesis Control for Self-powered Active Suspension of Vehicles

CHEN Yanqiu; SONG Pengyun; ZHANG Jiye; ZHANG Keyue

doi:10.3969/j.issn.0258-2724.2012.06.011

Volume 25 Issue 6

Dec. 2012

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Journal of Southwest Jiaotong University > 2012 > 25(6): 974-981.

CHEN Yanqiu, SONG Pengyun, ZHANG Jiye, ZHANG Keyue. μ-Synthesis Control for Self-powered Active Suspension of Vehicles[J]. Journal of Southwest Jiaotong University, 2012, 25(6): 974-981. doi: 10.3969/j.issn.0258-2724.2012.06.011

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CHEN Yanqiu, SONG Pengyun, ZHANG Jiye, ZHANG Keyue. μ-Synthesis Control for Self-powered Active Suspension of Vehicles[J]. Journal of Southwest Jiaotong University, 2012, 25(6): 974-981. doi: 10.3969/j.issn.0258-2724.2012.06.011

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μ-Synthesis Control for Self-powered Active Suspension of Vehicles

doi: 10.3969/j.issn.0258-2724.2012.06.011

Received Date: 11 Jan 2012
Publish Date: 25 Dec 2012

Abstract

Abstract

In order to improve the stability, vibration isolation, and energy feedback performance of a self-powered active suspension of vehicles, a self-powered active suspension model with parametric perturbation for 1/4 car body was built, and a dynamics analysis was made using the model. Then, a robust controller was designed based on μ-synthesis approach. A simulation was conducted in the MATLAB/SIMULINK environment to verify the controller performance. The result indicates that in the condition of parameter perturbation and surface irregularity disturbance, the μ-synthesis controller designed for the self-powered active suspension system was robust and stable: the peak structured singular value of the closed-loop system with parametric uncertainty was 0.580 9. With this controller, the vibration isolation performance of the suspension system was improved, and the gain of vertical acceleration of the car body was reduced by about 9 dB at the natural frequency.
- vehicles,
- self-powered active suspension,
- robust control,
- μ-synthesis,
- perturbation

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References(17)

References

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μ-Synthesis Control for Self-powered Active Suspension of Vehicles

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