To ensure reliable control, the noisy signal must be filtered or smoothed. Filters such as Bessel or Butterworth work time-synchronously with low-pass characteristics.
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To ensure reliable control, the noisy signal must be filtered or smoothed. Filters such as Bessel or Butterworth work time-synchronously with low-pass characteristics.
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The TIM-EC and TIM-PN torque interface modules offer an integrated web server. In this browser-based software you can use all of the relevant settings for using the CASMA filter. The required filter parameters are entered via the HTML page and checked for plausibility. The entry point to the CASMA filter is integrated into the "Units and filters" menu.

The TIM-EC and TIM-PN torque interface modules offer an integrated web server. In this browser-based software you can use all of the relevant settings for using the CASMA filter.
The required filter parameters are entered via the HTML page and checked for plausibility. The entry point to the CASMA filter is integrated into the "Units and filters" menu.

Parameterization characteristic |
Function |

Angle divider | Reduces the angle resolution, thus allowing higher rotational speeds in the same window width |

Angle range (degrees) | Angle range (window width) over which the moving average operates |

Pseudo speed (rpm) | After the rpm speed, pseudo pulses or a pseudo speed are generated. Otherwise the filter would stop working and the measured value would freeze. |

Information area feature |
Function |

Maximum rotational speed (rpm) | The angle pulses/s must be less than the sampling rate of the torque measurement. Otherwise the average would be formed via the same measured value. |

Pulses per revolution | Comes from the number of increments, and the analysis. With active quadrature analysis, the angular resolution is quadrupled |

Angular resolution in degrees | Calculated from the number of pulses per revolution and the divider |

Number of averaged values | Computes the number of measured values used to form the moving average |

Parameterization characteristic | Function |

Angle divider | Reduces the angle resolution, thus allowing higher rotational speeds in the same window width |

Angle range (degrees) | Angle range (window width) over which the moving average operates |

Pseudo speed (rpm) | After the rpm speed, pseudo pulses or a pseudo speed are generated. Otherwise the filter would stop working and the measured value would freeze. |

Information area feature | Function |

Maximum rotational speed (rpm) | The angle pulses/s must be less than the sampling rate of the torque measurement. Otherwise the average would be formed via the same measured value. |

Pulses per revolution | Comes from the number of increments, and the analysis. With active quadrature analysis, the angular resolution is quadrupled |

Angular resolution in degrees | Calculated from the number of pulses per revolution and the divider |

Number of averaged values | Computes the number of measured values used to form the moving average |

In this short example, PMX is used for analyzing power P[W], rotational speed n [1/s] and acceleration [1/s²], in addition to torque M [Nm] and the corresponding CASMA filter. The calculated channels as shown in the screenshot below have been created for this purpose. The signals are displayed in catman.
### Calculations:

Power:
Angular speed:
Angular acceleration:
**Important:**For all calculations the rotation speed n has to be converted from revolutions per minute to revolutions per second, i.e. divided by 60.
### Channels

Please see below for all channels displayed graphically in catman. The colors in brackets refer to the colors of the curves. The signals consist of the following channels:

**Torque M (red): **
**CASMA filter (green): **
**Power P (yellow): **
**Rotational speed n (orange): **
**Angular acceleration (blue):**

- Directly from the measurement channel of the PX460

- Already explained in detail

- Divider (rotational speed n / 60), revolutions per second
- Constant signal (2*pi)
- Multiplier (M * n [1/s] * 2*pi]

- Directly from the measurement channel of the PX460

- Multiplier (2*pi * n [1/s]), results in the angular speed w
- Differentiator (w)

In this short example, PMX is used for analyzing power P[W], rotational speed n [1/s] and acceleration [1/s²], in addition to torque M [Nm] and the corresponding CASMA filter. The calculated channels as shown in the screenshot below have been created for this purpose. The signals are displayed in catman.
### Calculations:

Power:
Angular speed:
Angular acceleration:
**Important:** For all calculations the rotation speed n has to be converted from revolutions per minute to revolutions per second, i.e. divided by 60.
### Channels

Please see below for all channels displayed graphically in catman. The colors in brackets refer to the colors of the curves. The signals consist of the following channels:

**Torque M (red): **
**CASMA filter (green): **
**Power P (yellow): **
**Rotational speed n (orange): **
**Angular acceleration (blue):**

- Directly from the measurement channel of the PX460

- Already explained in detail

- Divider (rotational speed n / 60), revolutions per second
- Constant signal (2*pi)
- Multiplier (M * n [1/s] * 2*pi]

- Directly from the measurement channel of the PX460

- Multiplier (2*pi * n [1/s]), results in the angular speed w
- Differentiator (w)