Performance Analysis of a Semiactive Suspension System with Particle Swarm Optimization and Fuzzy Logic Control

Table 7

Performance comparison of various input parameters in fuzzy logic control for step road profile.

Parameters	Input parameters for fuzzy logic controller
	Relative velocity/; relative displacement; (9 rules)		Absolute velocity/; relative velocity		Absolute acceleration/; relative velocity		Absolute velocity/; relative velocity/; relative displacement		Relative velocity/; relative displacement; (4 rules)
Tire load	9.7	1.3	13	1.2	9	1.7	11.2	2.2	9.7	1.3
	−9.7	5.3	−13	5.2	−9	5.7	−9.6	6.2	−8	5.8
Suspension displacement	0	1.3	0	2.1	26	2.5	43	3	0	1.3
	0	5.3	0	6.1	−13	6.5	−28	7	−28	6.4

Bold cells give percentage overshoot.
Italic cells give stabilizing time in seconds.