Research on Model Predictive Control for Automobile Active Tilt Based on Active Suspension

Jialing Yao, Meng Wang, Zhihong Li and Yunyi Jia
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Jialing Yao: College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing 210037, China
Meng Wang: College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing 210037, China
Zhihong Li: College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing 210037, China
Yunyi Jia: Department of Automotive Engineering, Clemson University, Greenville, SC 29607, USA

Energies, 2021, vol. 14, issue 3, 1-18

Abstract: To improve the handling stability of automobiles and reduce the odds of rollover, active or semi-active suspension systems are usually used to control the roll of a vehicle. However, these kinds of control systems often take a zero-roll-angle as the control target and have a limited effect on improving the performance of the vehicle when turning. Tilt control, which actively controls the vehicle to tilt inward during a curve, greatly benefits the comprehensive performance of a vehicle when it is cornering. After analyzing the advantages and disadvantages of the tilt control strategies for narrow commuter vehicles by combining the structure and dynamic characteristics of automobiles, a direct tilt control (DTC) strategy was determined to be more suitable for automobiles. A model predictive controller for the DTC strategy was designed based on an active suspension. This allowed the reverse tilt to cause the moment generated by gravity to offset that generated by the centrifugal force, thereby significantly improving the handling stability, ride comfort, vehicle speed, and rollover prevention. The model predictive controller simultaneously tracked the desired tilt angle and yaw rate, achieving path tracking while improving the anti-rollover capability of the vehicle. Simulations of step-steering input and double-lane change maneuvers were performed. The results showed that, compared with traditional zero-roll-angle control, the proposed tilt control greatly reduced the occupant’s perceived lateral acceleration and the lateral load transfer ratio when the vehicle turned and exhibited a good path-tracking performance.

Keywords: tilt control; model predictive control; handing stability; active suspension (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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