An adaptive pneumatic suspension based on the estimation of the excitation frequency

A pneumatic suspension that can adapt itself to the incoming vibration is presented in this paper. A switching control strategy between two different configurations is proposed and studied. The objective is to avoid undesirable resonant frequencies. The control procedure is based on the pre-knowledge of the incoming vibration frequency, and when this frequency is unknown, a very efficient prediction technique is used. The results show that the adaptable suspension has improved performance as compared to any of its passive counterparts. The transient response when switching typically takes less than three cycles and does not hinder the suspension performance.

[1]  Jian-Da Wu,et al.  Application of an active controller for reducing small-amplitude vertical vibration in a vehicle seat , 2004 .

[2]  Toshio Yoshimura,et al.  Fuzzy control of a manipulator using the concept of sliding mode , 1996, Int. J. Syst. Sci..

[3]  Michel Verhaegen,et al.  Proceedings of the 7th Mediterranean Conference on Control and Automation (MED99) , 1999 .

[4]  S. Sankar,et al.  A New Concept in Semi-Active Vibration Isolation , 1987 .

[5]  Toshio Yoshimura,et al.  CONSTRUCTION OF AN ACTIVE SUSPENSION SYSTEM OF A QUARTER CAR MODEL USING THE CONCEPT OF SLIDING MODE CONTROL , 2001 .

[6]  Igor Maciejewski,et al.  Modelling and multi-criteria optimisation of passive seat suspension vibro-isolating properties , 2009 .

[7]  Vicente Feliú Batlle,et al.  Adaptive input shaping for manoeuvring flexible structures using an algebraic identification technique , 2009, Autom..

[8]  Michael J. Griffin,et al.  a Semi-Active Control Policy to Reduce the Occurrence and Severity of End-Stop Impacts in a Suspension Seat with AN Electrorheological Fluid Damper , 1997 .

[9]  C.-M. Lee,et al.  Position control of seat suspension with minimum stiffness , 2006 .

[10]  Hebertt Sira-Ramírez,et al.  Closed-loop parametric identification for continuous-time linear systems via new algebraic techniques , 2007 .

[11]  Mooyoung Jung,et al.  a Hybrid-Type Active Vibration Isolation System Using Neural Networks , 1996 .

[12]  Kazuta Hirata,et al.  Parametric estimation of the cross-power spectral density , 2005 .

[13]  Jonathan Becedas,et al.  Adaptive Controller for Single-Link Flexible Manipulators Based on Algebraic Identification and Generalized Proportional Integral Control , 2009, IEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics).

[14]  Young-Bae Kim,et al.  Design and Application of Magnetic Damper for Reducing Rotor Vibration , 2000 .

[15]  H-B Yi,et al.  Active vibration control of a suspension system using an electromagnetic damper , 2001 .

[16]  Vicente Feliú Batlle,et al.  An algebraic frequency estimator for a biased and noisy sinusoidal signal , 2007, Signal Process..

[17]  Irving H. Shames.  Mechanics of Fluids , 1962 .

[18]  J.R. Trapero-Arenas,et al.  On-line frequency and damping estimation in a single-link flexible manipulator based on algebraic identification , 2008, 2008 16th Mediterranean Conference on Control and Automation.

[19]  Igor Maciejewski,et al.  The vibration damping effectiveness of an active seat suspension system and its robustness to varying mass loading , 2010 .

[20]  M. Fliess,et al.  Questioning some paradigms of signal processing via concrete examples , 2003 .

[21]  A. L. Morales,et al.  Unbalanced machinery vibration isolation with a semi-active pneumatic suspension , 2010 .

[22]  M. Fliess,et al.  An algebraic framework for linear identification , 2003 .

[23]  Bruce H. Wilson,et al.  An improved model of a pneumatic vibration isolator : Theory and experiment , 1998 .

[24]  Mamadou Mboup,et al.  Parameter estimation via differential algebra and operational culculus , 2007 .

[25]  Yoshihiro Suda,et al.  Self-powered active vibration control using a single electric actuator , 2003 .

[26]  H. Sira-Ramírez,et al.  A fast on-line frequency estimator of lightly damped vibrations in flexible structures , 2007 .

[27]  A. L. Morales,et al.  An analytical model of pneumatic suspensions based on an experimental characterization , 2008 .

[28]  Koen Deprez,et al.  An improved design of air suspension for seats of mobile agricultural machines , 2004 .