SAE J 1490:2011-05-17

There are two ways to assess the characteristics of ride vibrations of a vehicle during its operation. Subjective evaluation and objective measurement. Subjective assessments of the ride vibrations experienced by drivers during ride evaluations are generally performed by a panel of drivers and/or passengers who are instructed to operate or ride a group of vehicles in a predetermined manner in order to subjectively assess the levels and characteristics of ride vibrations. Figures 6A through 6C show examples of subjective evaluation forms presently in use. The disadvantages of the subjective method include need for careful experimental design, need for statistically unbiased samples, complexity of human perceptions of vibrations, and difficulty in comparing qualitative data of vehicles evaluated at different times and/or by different groups of people. Often ride characterization is not an easy task using only qualitative or descriptive terms. Therefore, it is necessary and desirable to develop objective techniques to enable ride engineers and others to measure ride vibrations during ride assessment in a quantitative manner.

Author	SAE
Editor	SAE
Document type	Standard
Format	File
ICS	17.160 : Vibrations, shock and vibration measurements 43.040.60 : Bodies and body components
Number of pages	29
Replace	SAE J 1490:1999-09-30
Set	JPAKS10U-10
Year	2011
Document history	SAE J 1490:1999-09-30
Country	USA
Keyword	SAE 1490;SAE J1490;SAE J1490;SAE J 1490