HIS-Based Semiactive Suspension Dual-Frequency-Range Switching Control to Improve Ride Comfort and Antiroll Performance

Table 3

Parameter optimization for HIS-based semiactive control suspension system.

Parameter	Symbol	Remark	Scale	Optimization objective function	Constraints
The diameter of throttle valve connecting to the rodless chamber in front axle	D1fl	D1fl = D1fr	[2,8] (mm)	Bounce mode: where f1 and f2 are weighted coefficients and N is the sampling point	where Gsj0 is the static load of every wheel
	D1fr
The diameter of throttle valve connecting to the rodless chamber in rear axle	D1rl	D1rl = D1rr	[2,8] (mm)
	D2rr
The diameter of throttle valve connecting to the rod chamber in front axle	D2fl	D2fl = D2fr	[2,8] (mm)
	D2fr
The diameter of throttle valve connecting to the rod chamber in rear axle	D2rl	D2rl = D2rr	[2,8] (mm)
	D2rr
The diameter of throttle valve connecting to the accumulator in front axle	D3fl	D3fl = D3fr	[2,8] (mm)	Roll mode:	Pmax ≤ 10 Mpa
	D3fr
The diameter of throttle valve connecting to the accumulator in rear axle	D3rl	D3rl = D3rr	[2,8] (mm)
	D3rr
Precharge pressure in accumulator	p0		[5e5,25e5] (pa)