Traditional Method
Compact sensor
perform ISO2631 ride comfort analysis
ISO 2631:1997 deals with generic ride comfort that can be used for both roadside vehicles and railway trains.
The standard requests to apply a non-symmetric filter on vibration data (for all directions X / Y / Z axis) in order to come up with a [RMS] root mean squared value (average vibration). This average vibration is then compared with standard limits that determine whether the ride was considered comfortable or not comfortable.
The filter is shaped in such a way that the highest or worst frequencies felt by the human being are weighted the most i.e. dominates the calculation of RMS; which is around 10Hz according to ISO 2631:1997-4.
ISO 2631:1997 evaluates frequency weightings for health, comfort and perception and for motion sickness.
Installing the Sensor
Apply double sided tape. For low vibrating structures in the order of milli G (when doing ride comfort analysis), it is recommended to apply double sided tape which results in the same results as applying adhesive.
Running the analysis
Enable ISO2631 ride comfort mode.
Run the analysis, all RMS (root mean squared will be updated to reflect "comfort" value
Comfort level is compared with acceptance criteria