Apps

Truck Suspension

Apps.TruckSuspension History

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March 06, 2010, at 02:47 AM by 206.180.155.75 -
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March 06, 2010, at 02:32 AM by 206.180.155.75 -
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!! Truck Suspension Dynamics

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! Truck suspension
!
! D. Matko, R. Karba and B. Zupancic, Simulation and Modeling of Continuous
!  Systems.  Prentice Hall, 1992.
!
! APMonitor Modeling Language
! http://www.apmonitor.com
Model suspension
  Parameters
    m[1] = 500  ! kg
    m[2] = 50  ! kg
    k[1] = 7500 ! spring constant
    k[2] = 150000 ! spring constant
    f = 2250    ! N
    z = 0      ! vertical displacement
  End Parameters

  Variables
    y[1] = -0.05 ! position
    y[2] = 0
    z[1] = 0    ! velocity
    z[2] = 0
  End Variables

  Equations
    $y[1] = z[1]
    $y[2] = z[2]
    m[1] * $z[1] = -f * (z[1]-z[2]) - k[1] * (y[1]-y[2])
    m[2] * $z[2] = -f * (z[2]-z[1]) - k[1] * (y[2]-y[1]) - k[2] * (y[2]-z)
  End Equations
End Model
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