Quality factor of the filter (P-AXIS-00752)

P-AXIS-00752

Quality factor of the filter

Description

Depending on the filter type selected (P-AXIS-00849), the quality factor has a different impact on filter response.

Filter type - Band-pass filter:

Specifies the inverse value of the bandwidth for the band-pass filter for all modes (P-AXIS-00753).

P-AXIS-00752 = P-AXIS-00751 / bandwidth

Filter type - All-pass filter:

In the case of an all-pass filter, the quality factor determines the magnitude and narrowband nature of the phase shift about the centre frequency fg_f0. The higher the quality factor, the steeper and more concentrated the phase rotation.

Parameter

lr_param.improved_position_control.stage[i].filter[k].q_factor

Data type

REAL64

Data range

1.0 <= q_factor <= 10.0

Axis types

T, R, S

Dimension

T: —-

R, S: —-

Default value

-1

Drive types

SERCOS, Profidrive, CANopen

Remarks

A high filter quality limits the bandwidth of the filtering frequencies. To avoid cutting off any relevant frequencies, it is advisable to raise the filter quality step by step. The filter quality is limited by changing the frequency dependent on machine position and mass inertia. Among other things, a higher filter quality leads to improved damping of the required frequency, whereas a lower quality results in a more robust behaviour of frequency damping.

Parameter available as of CNC Build V3.1.3077.08