Study Of An Active Suspension For Improved Ride Quality And Reduced Dynamic Wheel Loads
نویسندگان
چکیده
An articulated vehicle suspension comprising a parallel combination of energy restoring and dissipative elements and a feedback controlled force generator is analyzed using Linear Quadratic Gaussian (LQG) control technique. Ari ideal active suspension scheme is formulated to minimize a quadratic performance measure comprising ride quality, cargo safety, suspension and tire dynamic deflections, and power requirements. The presence of the passive components yields a fail-safe active suspension design that reduces the power requirements and enhances the reliability. The ride quality and the dynamic wheel load performance characteristics of the actively suspended vehicle are compared to those of a vehicle with an "optimum" passive suspension to demonstrate the performance potential of the ideal suspension scheme. The results of the study reveal that the fail-safe active suspensions can yield performance benefits associated with ride quality as well as tire dynamic forces.
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