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Impact of Using an Inerter on the Performance of Vehicle Active Suspension
 
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Tafila Technical University
CORRESPONDING AUTHOR
Nabeel Taiseer Alshabatat   

Tafila Technical University
Publication date: 2022-06-01
 
Adv. Sci. Technol. Res. J. 2022; 16(3):331–339
 
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ABSTRACT
This paper investigates the effect of employing an inerter on the performance of active suspension systems. A quarter-car model with cubic-nonlinear spring is considered. The inerter is installed in parallel with the primary suspension spring and damper. First, feedback linearization (FBL) is used to linearize the mathematical model. Then the linear quadratic regulator (LQR) is adopted to control the suspension system. The proposed design is ride comfort-oriented and considers structural constraints. Numerical simulations are executed for passive systems with different values of inertance. Results show that employing an inerter to the passive suspension can improve the ride comfort performance by more than 32%. Employing an inerter to active suspension systems can also improve the ride comfort and reduce actuator force significantly. The actuator force can be reduced by 25%. However, the results also show that the uncaring selection of the inerter can dramatically degrade the performance of the suspension system.