Controller Design for a Linearly Actuated Active Suspension System  (cdlaass)

Active suspension systems control the vertical movement of a vehicle using software and

hardware with the aim of reducing or eliminating disturbances. The controller design for a

linearly actuated active suspension system project approaches the problem of limiting vertical

movement of a vehicle using a linear actuator and hardware/software from National

Instruments. A disturbance is introduced to the system via an elliptical cam shaft attached to

an AC motor. The frequency of the disturbance is determined by a frequency drive controlling

the AC motor. As the controller software processes the vertical displacement of the vehicle by

way of a potentiometer, software outputs a signal(s) to circuitry driving

the linear actuator, lowering or raising the vehicle in response to the disturbance.