Control and Stability Analysis of Double Time-Delay Active Suspension Based on Particle Swarm Optimization

Table 2

RMS value of ride comfort index under harmonic excitation.

Performance indicators	Passive suspension	Active suspension with time delay	Reduced proportion (%)
RMS acceleration of body centroid	3.0647	0.5026	−83.60
RMS acceleration of vehicle pitch	2.3646	1.1162	−52.80
RMS of dynamic deflection of front suspension (m)	0.0383	0.0275	9.78
RMS of dynamic deflection of rear suspension (m)	0.0772	0.0362	28.20
RMS of dynamic displacement of front tire (m)	0.0108	0.0020	−81.48
RMS of dynamic displacement of the rear tire (m)	9.7508e − 4	3.3363e − 4	−68.78