ANALYSIS AND SIMULATION OF AN ACTIVE SUSPENSION SYSTEM

With the rising need to maximize passenger’s comfort, especially with the rising demand for selfdriving vehicles, alternatives to the popular passive suspension system have been on the rise. In order to improve the stability of a vehicle and reduce the vibration transferred to the passengers of the vehicle due to different road profiles, it has become necessary to implement a smarter type of suspension system that can respond to different type of road profiles and provide improved damping experience. This type of suspension system is the active suspension system. In order to analyze and simulate an active suspension system, parameters like the sprung and unsprung mass, spring and tire stiffness, damping constant of the damper were accounted for. Then the mathematical model of the system in the time domain was generated. Mathematical model was transformed from the time domain to frequency domain, using the Laplace transform. Then an appropriate controller for stabilizing the system was obtained. The simulated results show that the active suspension system performs better than the passive suspension in terms of settling time, rise time and overshoot and had lesser vibrations was transmitted to the passengers