A New Physical Parameter Identification Method for Two-Axis On-Road Vehicles: Simulation and Experiment

Table 5

Estimated physical parameters for the school bus.

Notation	Description	Estimate values	Units
	Sprung mass	4320	kg
	Sprung mass inertia of the pitch	8800	kg⋅m^2
	Sprung mass inertia of the roll	3450	kg⋅m^2
	Unsprung mass of the front	130	kg
	Unsprung mass of the rear	330	kg
	Suspension stiffness of the front	155000	N/m
	Suspension stiffness of the rear	260000	N/m
	Tire stiffness of the front	880000	N/m
	Tire stiffness of the rear	1760000	N/m
	Equivalent suspension damping coefficient of the front	4000	N⋅s/m
	Equivalent suspension damping coefficient of the rear	5000	N⋅s/m
	Equivalent half of the shock absorber left-to-right distance at front/rear of vehicle	0.64	m