A Linear Permanent-Magnet Motor for Active Vehicle Suspension

Traditionally, automotive suspension designs with passive components have been a compromise between the three conflicting demands of road holding, load carrying, and passenger comfort. Linear electromagnetic motor-based active suspension has superior controllability and bandwidth, provides shock load isolation between the vehicle chassis and wheel, and, therefore, has great potential. It also has the ability to recover energy that is dissipated in the shock absorber in the passive systems and results in a much more energy-efficient suspension system. This paper describes the issues pertinent to the design of a high force density tubular permanent-magnet (PM) motor for active suspension in terms of performance optimization, the use of a solid stator core for low-cost production and its impact on thrust force, and the assessment of demagnetization risk.

[1]  T. S. Sankar,et al.  Analysis of a Passive Sequential Hydraulic Damper for Vehicle Suspension , 1990 .

[2]  Kais Atallah,et al.  Design of a linear permanent magnet motor for active vehicle suspension , 2009, 2009 IEEE International Electric Machines and Drives Conference.

[3]  Johannes J. H. Paulides,et al.  Design Considerations for a Semi-Active Electromagnetic Suspension System , 2006, IEEE Transactions on Magnetics.

[4]  G. D. Marques,et al.  Permanent-magnets linear actuators applicability in automobile active suspensions , 2006, IEEE Transactions on Vehicular Technology.

[5]  Roger Stanway,et al.  Semi-active vehicle suspension using smart fluid dampers: a modelling and control study , 2003 .

[6]  D. Howe,et al.  Stator iron loss of tubular permanent magnet machines , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[7]  Nicola Bianchi,et al.  Tubular linear permanent magnet motors: an overall comparison , 2002 .

[8]  Maurizio Repetto,et al.  The application of soft magnetic composites to the design of tubular linear actuators , 2004 .

[9]  D. Howe,et al.  Tubular modular permanent-magnet machines equipped with quasi-Halbach magnetized magnets-part II: armature reaction and design optimization , 2005, IEEE Transactions on Magnetics.

[10]  D. Howe,et al.  Tubular modular permanent-magnet machines equipped with quasi-Halbach magnetized magnets-part I: magnetic field distribution, EMF, and thrust force , 2005, IEEE Transactions on Magnetics.

[11]  Ion Boldea,et al.  Linear Motion Electromagnetic Devices , 1997 .

[12]  Jiabin Wang,et al.  Design optimization of radially magnetized, iron-cored, tubular permanent-magnet machines and drive systems , 2004, IEEE Transactions on Magnetics.

[13]  Kais Atallah,et al.  A tubular flux-switching permanent magnet machine , 2008 .

[14]  David Crolla,et al.  Road Vehicle Suspension System Design - a review , 1987 .

[15]  D. Howe,et al.  Design optimisation and comparison of tubular permanent magnet machine topologies , 2001 .

[16]  Weili Yan,et al.  3D multifields FEM computation of transverse flux induction heating for moving-strips , 1999 .

[17]  Johannes J. H. Paulides,et al.  Active Electromagnetic Suspension System for Improved Vehicle Dynamics , 2008, IEEE Transactions on Vehicular Technology.

[18]  D. Howe,et al.  Comparative studies of linear permanent magnet motor topologies for active vehicle suspension , 2008, 2008 IEEE Vehicle Power and Propulsion Conference.

[19]  Jiabin Wang,et al.  A general framework for the analysis and design of tubular linear permanent magnet machines , 1999 .

[20]  Pio G. Iovenitti,et al.  Electromagnetic regenerative damping in vehicle suspension systems , 2000 .

[21]  J. F. Eastham,et al.  Novel synchronous machines: linear and disc , 1990 .

[22]  Ulrich Mair,et al.  Electromechanical Active Body Control , 2009 .

[23]  K. Atallah,et al.  Demagnetization Assessment for Three-Phase Tubular Brushless Permanent-Magnet Machines , 2008, IEEE Transactions on Magnetics.

[24]  Johannes J. H. Paulides,et al.  Design Aspects of an Active Electromagnetic Suspension System for Automotive Applications , 2008, 2008 IEEE Industry Applications Society Annual Meeting.