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International Journal of Automotive Technology 2005;6(3): 243-249. |
| CONTROL STRATEGY OF AN ACTIVE SUSPENSION FOR A HALF CAR MODEL WITH PREVIEW INFORMATION |
| B.-K. CHO1, G. RYU1, S. J. SONG2 |
1Korea University of Technology and Education
2Wonju National College |
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| ABSTRACT |
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To improve the ride comfort and handling characteristics of a vehicle, an active suspension which is controlled by external actuators can be used. An active suspension can control the vertical acceleration of a vehicle and the tire deflection to achieve the desired suspension goal. For this purpose, Model Predictive Control (MPC) scheme is applied with the assumption that the preview information of the oncoming road disturbance is available. The predictive control approach uses the output prediction to forecast the output over a time horizon and determines the future control over the horizon by minimizing the performance index. The developed method is applied to a half car model of four degrees-of-freedom and numerical simulations show that the MPC controller improves noticeably the ride qualities and handling performance of a vehicle. |
| Key Words:
Active suspension, Preview information, Model predictive control, Vehicle dynamics |
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