Browse Publications Technical Papers 2013-26-0147

Cab Suspension Optimization Using Matlab 2013-26-0147

Driver's ride comfort is an important characteristic in heavy commercial vehicle cab design. Optimizing the ride behavior for different cab variants and vehicle applications is a challenge for cab design and development engineers. Suspension parameter tuning with physical test is time consuming and costly. Therefore, a lumped parameter quarter car model of suspended cab is developed in MATLAB® tool SimScape which includes cab mass, springs and dampers for predicting ride behavior as per ISO 2631. The study is done for a 25 t rigid truck. The input to the system is displacement at axles and the output is acceleration measured at cab and chassis level. This output is correlated with test data obtained from physical measurements using Power Spectral Density (PSD) curves, bode plots and level cross count. This proved that simple lumped parameter models which use very few input parameters can be effectively employed in analysis of cab ride in initial design phases. Further, the cab suspension is optimized to improve the ride comfort, with cab suspension stiffness and damping as tunable parameters. This study gives the choice to cab designer to choose the best combination of spring and damper for better ride at initial design phase itself. The number of physical tests required for subjective assessment and validation can be reduced, saving time and cost. In future, this model can be extended for different truck configurations.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:

The Study on Fatigue Test of Cab Assembly Based on 4-Channel Road Simulation Bench


View Details


Simulation and Optimization of a Low Frequency Vibration Issue for Commercial Truck


View Details


Improving Ride Quality on the Cab Suspension of a Heavy Duty Truck


View Details