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Pneumatic active suspension design for heavy vehicle seats and operator ride comfort.

Authors
Valero-B; Amirouche-F; Mayton-A
Source
Proceedings of the First American Conference on Human Vibration, June 5-7, 2006, Morgantown, West Virginia. Dong R, Krajnak K, Wirth O, Wu J, eds., Morgantown, WV: National Institute for Occupational Safety and Health, 2006 Jun; :38-39
NIOSHTIC No.
20030963
Abstract
Handling of heavy vehicles such as tractors, trucks and buses require a large roll stiffness which causes large high accelerations at the seat level during impacts. To provide comfort and minimize the energy transfer from the chassis and the seat a pneumatic active seat suspension is proposed. An active seat suspension design and control algorithm under development at the University of Illinois at Chicago, UIC, is being developed and tested. Preliminary results are presented in this paper. The design of a passive suspension typically consists of optimizing the value of two parameters: the stiffness and the damping of the suspension. The general dynamic performance of the suspension is limited to the conditions under which these parameters were obtained. A change in the input conditions might lead to poor suspension and an amplification of the vibration transmitted to the body. The focus of this paper is a robust, semi-active suspension system with a variable controlled damping and using the body response an index measure to minimize the acceleration at the interface of the seat and operator. A summary of existing suspensions, such as MR and ER fluids, and spring loaded and dual valve shock absorbent will be discussed to highlight the need of a semi-active pneumatic suspension system design.
Keywords
Vibration; Vibration-disease; Vibration-control; Vibration-effects; Vibration-exposure; Ergonomics; Equipment-design; Control-technology; Engineering-controls
Publication Date
20060601
Document Type
Conference/Symposia Proceedings
Editors
Dong-R; Krajnak-K; Wirth-O; Wu-J
Fiscal Year
2006
NTIS Accession No.
NTIS Price
NIOSH Division
PRL
Source Name
Proceedings of the First American Conference on Human Vibration, June 5-7, 2006
State
PA; IL
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