Note: This page has been translated by MathWorks. Click here to see

To view all translated materials including this page, select Country from the country navigator on the bottom of this page.

To view all translated materials including this page, select Country from the country navigator on the bottom of this page.

Track and extract order magnitudes from vibration signal

`mag = ordertrack(x,fs,rpm,orderlist)`

```
[mag,rpm,time]
= ordertrack(x,fs,rpm,orderlist)
```

`[___] = ordertrack(x,fs,rpm,orderlist,rpmrefidx)`

`[___] = ordertrack(map,order,rpm,time,orderlist)`

`[___] = ordertrack(___,Name,Value)`

`ordertrack(___)`

returns
a matrix, `mag`

= ordertrack(`x`

,`fs`

,`rpm`

,`orderlist`

)`mag`

, that contains time-dependent root-mean-square
(RMS) amplitude estimates of a specified set of orders, `orderlist`

,
present in input signal `x`

. `x`

is
measured at a set `rpm`

of rotational speeds expressed
in revolutions per minute. `fs`

is the measurement
sample rate in Hz.

`[___] = ordertrack(___,`

specifies further options using `Name,Value`

)`Name,Value`

pairs. Some of
the options apply only to the Vold-Kalman tracking procedure.

`ordertrack(___)`

with no output
arguments plots in the current figure the time-dependent orders and
RPM values.

[1] Brandt, Anders. *Noise and Vibration Analysis:
Signal Analysis and Experimental Procedures*. Chichester,
UK: John Wiley & Sons, 2011.

[2] Feldbauer, Christian, and Robert Höldrich. “Realization
of a Vold-Kalman Tracking Filter — A Least Squares Problem.” *Proceedings
of the COST G-6 Conference on Digital Audio Effects (DAFX-00)*.
Verona, Italy, December 7–9, 2000.

[3] Vold, Håvard, and Jan Leuridan. “High Resolution
Order Tracking at Extreme Slew Rates Using Kalman Tracking Filters.” *Shock
and Vibration*. Vol. 2, 1995, pp. 507–515.

`orderspectrum`

| `orderwaveform`

| `rpmfreqmap`

| `rpmordermap`

| `tachorpm`