Optimal and Robust Control of Active Suspension System for a Quarter Car Model

The vehicle's comfort and stability while driving is significantly influenced by the suspension. An active suspension system is utilized in place of the conventional mechanical suspension system (passive suspension system) to enhance safety in addition to comfort and convenience. The suspension system is classified as a three types passive, semi active, and active suspension. The PID controller, LQG controller, FOPID controller, and other control devices, are utilized to regulate the active suspension system. The application of the quadratic linear regulator (LQR) controller for active suspension is the main topic of this study. According to research findings, active suspension systems considerably increase the displacement values and inflated block acceleration of a vehicle. In this work the authors focus on control an active suspension system by LQR control, and comparative the results with passive suspension. LQR controller support body movement optimization, particularly given how noisy the road is. Future, more sophisticated research will be supported based on the findings from this study.