847
edits
Difference between revisions of "Human Vibration"
Jump to navigation
Jump to search
→Aw
(→VDV) |
(→Aw) |
||
| Line 134: | Line 134: | ||
For each channel, the <math>A_w</math> and <math>A_w(T)</math> will be calculated. The <math>A_w(T)</math> is the Daily exposure value, defined as : <br> | For each channel, the <math>A_w</math> and <math>A_w(T)</math> will be calculated. The <math>A_w(T)</math> is the Daily exposure value, defined as : <br> | ||
<math display="block" forcemathmode="5">A_w(T) = A_w*\sqrt{\frac{T_m}{T}}</math> | <math display="block" forcemathmode="5">A_w(T) = A_w*k_{i}*\sqrt{\frac{T_m}{T}}</math> | ||
With <math>T_m</math> the duration of the measurement and <math>T</math> the total exposure duration represented by the "Reference time" parameter. | With <math>T_m</math> the duration of the measurement and <math>T</math> the total exposure duration represented by the "Reference time" parameter. the <math>k_i/<math> factor is defined in the ISO 2631 as <math>k_X = k_Y = 1.4</math> and <math>k_Z = 1</math>. | ||
When comparing result from one measurement point in the three direction, the maximum of the Daily exposure value must be used as the total daily exposure value at that point :<br> | |||
<math display="block" forcemathmode="5">A_w(T) = max(A_{wX}(T), A_{wY}(T), A_{wZ}(T)) </math> | |||
======av====== | ======av====== | ||