Modelling and Analysis of Automobile Vibration System Based on Fuzzy Theory under Different Road Excitation Information

Table 3

The root mean square value of acceleration.

Input	Speed	Control mode	Body vertical acceleration	Pitching angular acceleration	Rolling angular acceleration
White noise excitation	20 m/s	Passive	0.3800	0.2075	0.4937
		PID	0.2862	0.1720	0.4462
		Fuzzy	0.3031	0.1700	0.4237
		Fuzzy-PID	0.2374	0.1475	0.3640
	30 m/s	Passive	0.5383	0.2232	0.4247
		PID	0.4205	0.1936	0.3828
		Fuzzy	0.3987	0.1819	0.3217
		Fuzzy-PID	0.3344	0.1673	0.2938
The sinusoidal excitation	20 m/s	Passive	1.1386	0.5525	0.1858
		PID	0.7232	0.3722	0.0938
		Fuzzy	0.7950	0.3734	0.1159
		Fuzzy-PID	0.4983	0.2891	0.0892
	30 m/s	Passive	1.2356	0.2857	0.2111
		PID	0.7881	0.2055	0.1111
		Fuzzy	0.8587	0.2113	0.1225
		Fuzzy-PID	0.6001	0.1653	0.1189