International Journal of Automotive Technology

, Volume 19, Issue 6, pp 1001–1012 | Cite as

Development of Preview Active Suspension Control System and Performance Limit Analysis by Trajectory Optimization

  • Minwoo Soh
  • Hyeongjun Jang
  • Jaehyung Park
  • Youngil Sohn
  • Kihong ParkEmail author


The main role of the suspension system is to achieve ride comfort by reducing vibrations generated by the road roughness. The active damper is getting much attention due to its reduced cost and ability to enhance ride comfort especially when the road ahead is measurable by an environment sensor. In this study a preview active suspension control system was developed in order to improve ride comfort when the vehicle is passing over a speed bump. The control system consists of a feedback controller based on the skyhook logic and a feedforward controller for canceling out the road disturbance. The performance limit for the active suspension control system was computed via trajectory optimization to provide a measure against which to compare and validate the performance of the developed controller. The simulation results indicated that the controller of this study could enhance ride comfort significantly over the active suspension control system employing only the skyhook feedback control logic. Also the developed controller, by displaying similar control pattern as the trajectory optimization during significant time portions, proved that its control policy is legitimate.

Key Words

Active suspension control system Active damper Trajectory optimization Performance limit Skyhook control 


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Copyright information

© The Korean Society of Automotive Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Minwoo Soh
    • 1
  • Hyeongjun Jang
    • 1
  • Jaehyung Park
    • 2
  • Youngil Sohn
    • 2
  • Kihong Park
    • 3
    Email author
  1. 1.Graduate School of Automotive EngineeringKookmin UniversitySeoulKorea
  2. 2.Chassis System Control Development TeamHyundai Motor CompanyGyeonggiKorea
  3. 3.Department of Automobile & IT ConvergenceKookmin UniversitySeoulKorea

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