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SD710 Series Servo Drive Technical Manual Chapter 6 Adjustment
13
Precautions
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The above filter frequency characteristics are obtained from theoretical model calculations and
simulations, and there are some differences with the actual characteristics.
Notch filter
A notch filter is a filter used to remove a specific vibration frequency component caused by resonance of a ball screw
shaft, etc. The gain curve is shown in the figure below, and the specific frequency (hereinafter called the trap frequency)
has a notch shape. This feature enables the elimination or reduction of frequency components near the trap frequency.
The notch filter is set by three parameters: the notch filter frequency, the notch filter Q value, and the notch filter depth.
The notch filter Q and the notch filter depth D are described below.
Notch filter Q
The notch filter Q value is the set value that determines the width of the notch filter at a certain notch filter frequency. The
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First-order low-
pass filter
Second-order
low-pass filter