Advisor: Dr. W. Anakwa
An active pneumatic suspension system replaces a passive shock absorber
by producing forces opposing uneven surfaces in the roadway. The active
suspension system can provide a smoother ride allowing for better vehicle
control, and less vehicle abuse. The prototype laboratory scale active
suspension system consists of springs, a pneumatic actuator, solenoid valves,
position and velocity sensors. The road disturbance input is simulated
using an inverter driven A.C. motor. Signals from the position and velocity
sensors are sent to a microprocessor which controls the pneumatic actuator.
Some of the control algorithms which may be implemented include proportional
and linear optimal quadratic control law. Presently, a proportional control
law attenuates road disturbance input effect by 40%.
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