Active suspension control considering lateral vehicle dynamics due to road input at different vehicle speed

Takuma Suzuki, Masaki Takahashi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In recent year, it is reported that roll and lateral vehicle motions are affected by the road input, and the characteristic of vehicle motions changes depending on the vehicle speed. However, there are few researches about a suspension control method which takes into consideration with the suspension characteristic that is the toe change and scuff caused by suspension stroke and tire side-force. In this paper, new active suspension control method is proposed to reduce the vehicle vibration and vehicle lateral motion due to the road input. Firstly, a vehicle model including the suspension characteristic is constructed. Next, the time delay of the road input from the front wheel to the rear wheel is modeled with Pade approximation. Then we formulate the linear parameter varying system taking amount of vehicle speed. The gain-scheduling controller based on the linear matrix inequalities which sets the lateral acceleration of the vehicle to one of controlled outputs is proposed. Finally, in order to verify the effectiveness of the proposed control method, the simulation is carried out by using the full vehicle model. From the result, it was confirmed that the proposed gain-scheduling controller can reduce the vertical and lateral motions caused by road disturbance at a different vehicle speed better than a normal H controller.

Original languageEnglish
Pages (from-to)446-461
Number of pages16
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume78
Issue number786
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

Controllers
Wheels
Scheduling
Linear matrix inequalities
Tires
Time delay

Keywords

  • Active suspension
  • Automobile
  • Comfortability in riding
  • Gain-scheduled control
  • Linear parameter varying system
  • Vehicle dynamics
  • Vibration control

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering

Cite this

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abstract = "In recent year, it is reported that roll and lateral vehicle motions are affected by the road input, and the characteristic of vehicle motions changes depending on the vehicle speed. However, there are few researches about a suspension control method which takes into consideration with the suspension characteristic that is the toe change and scuff caused by suspension stroke and tire side-force. In this paper, new active suspension control method is proposed to reduce the vehicle vibration and vehicle lateral motion due to the road input. Firstly, a vehicle model including the suspension characteristic is constructed. Next, the time delay of the road input from the front wheel to the rear wheel is modeled with Pade approximation. Then we formulate the linear parameter varying system taking amount of vehicle speed. The gain-scheduling controller based on the linear matrix inequalities which sets the lateral acceleration of the vehicle to one of controlled outputs is proposed. Finally, in order to verify the effectiveness of the proposed control method, the simulation is carried out by using the full vehicle model. From the result, it was confirmed that the proposed gain-scheduling controller can reduce the vertical and lateral motions caused by road disturbance at a different vehicle speed better than a normal H ∞ controller.",
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