Improvement of Ride Comfort with Active Suspension System Using Preview Control Law | Zendy

Hideo Tobata | Zendy; Takeshi Kimura | Zendy; Yohsuke Akatsu | Zendy

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Improvement of Ride Comfort with Active Suspension System Using Preview Control Law

Author(s) -

Hideo Tobata,

Takeshi Kimura,

Yohsuke Akatsu

Publication year - 1995

Publication title -

journal of robotics and mechatronics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.257

H-Index - 19

eISSN - 1883-8049

pISSN - 0915-3942

DOI - 10.20965/jrm.1995.p0307

Subject(s) - skyhook , suspension (topology) , acceleration , automotive engineering , road surface , damper , actuator , vibration , active suspension , engineering , control theory (sociology) , computer science , control (management) , simulation , sprung mass , structural engineering , acoustics , physics , mathematics , artificial intelligence , homotopy , pure mathematics , civil engineering , electrical engineering , classical mechanics

It is known that the ride comfort of a vehicle equipped with active suspension can be further improved if a priori information about the road surface, i.e., preview control, is used. This paper discusses the application of preview control to the rear wheels of a vehicle with active suspension. Information about the front wheels' vertical motion is used to estimate the vertical travel of the rear wheels. Vibration transmitted from the road surface to the vehicle body through the rear suspension can be estimated from the vertical motion of the wheels. Thus, the control force that should be generated by the rear suspension actuators can be obtained. Simulation results reveal that preview control provides an accurate estimate of road force inputs, enabling the vertical acceleration of the vehicle body to be reduced for further improvement in ride comfort. The results of vehicle driving tests also confirm that the preview-control force serves to reduce the vertical acceleration of the vehicle body. Cooperation between preview control and a skyhook damper is also discussed and shown to be effective in reducing vehicle body vibration.

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