Improving the Stability of the Passenger Vehicle by Using an Active Stabilizer Bar Controlled by the Fuzzy Method

Table 1

The technical parameters.

Symbol	Description	Value	Unit
M	Sprung mass	1,655	kg
mij	Unsprung mass	48	kg
M	Total mass	1847	kg
hφ	Distance from center of gravity to roll axis	0.51	m
hθ	Distance from center of gravity to pitch axis	0.44	m
twi	Half of the track width front/rear axle	0.725/0.720	m
li	Distance from center of gravity to front/rear axle	1.25/1.65	m
Jx	Moment of inertia of the x-axis	665	kg m^2
Jy	Moment of inertia of the y-axis	2,480	kg m^2
Jz	Moment of inertia of the z-axis	2,610	kg m^2
Τ	Time constant	0.005	S
	Servo valve gain	0.025	m/A
Kqi	Valve flow gain coefficient	0.02	m^2/s
Kce	Total flow pressure coefficient	4 × 10^−11	m^5/Ns
Vt	Total volume of trapped oil	1 × 10^−3	m^3
βe	Effective bulk modulus of the oil	6 × 10^6	N/m^2
Dm	Flow per revolution	1.6 × 10^−5	m^3/rad
Bm	Viscous friction coefficient	12.5	Nms/rad
Ja	Moment of inertia of the hydraulic motor	2.5	kg m^2