Simulation of Longitudinal Vehicle Dynamics under FTP-75 Drive Cycle Using MATLAB/Simulink
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Keywords:
Vehicle Longitudinal Dynamics, Tractive Effort, Drive Cycle Simulation, Resistive Forces Modeling, MATLAB/Simulink, Power And Torque Analysis, Energy ConsumptionAbstract
This study presents a MATLAB/Simulink-based framework for analyzing the longitudinal
dynamics of passenger vehicles under standardized drive cycles. The primary objective is to provide a
flexible tool for quantifying tractive effort, power demand, and wheel torque , which are critical for the
design and performance evaluation of electric and hybrid vehicles. The model incorporates fundamental
resistive forces including rolling resistance, aerodynamic drag, gradient resistance, and acceleration
resistance, each implemented as modular subsystems in Simulink. The FTP-75 drive cycle, widely
recognized for emulating urban driving conditions, is used as the input speed profile to evaluate vehicle
behavior under dynamic scenarios such as acceleration, deceleration, and stop-and-go traffic. Simulation
outputs include time-based profiles of tractive effort, instantaneous power, and wheel torque, providing
clear insights into the energy demands. Results indicate that tractive effort peaks during acceleration and
uphill segments, while aerodynamic drag becomes dominant at higher speeds. Power requirements fluctuate
up to approximately 70 kW, and torque values reach around 1600 Nm, consistent with medium-sized
passenger vehicles. The findings confirm that the proposed framework accurately tracks the reference
velocity profile and generates performance estimates. Overall, this study demonstrates the effectiveness of
drive cycle-based modeling in supporting motor sizing, battery capacity planning, and control strategy
development, offering a valuable foundation for both academic research and industrial vehicle design
optimization.
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