org.usfirst.frc.team1736.lib.SignalMath

Class FilterCoefs

java.lang.Object

org.usfirst.frc.team1736.lib.SignalMath.FilterCoefs

public final class FilterCoefs
extends java.lang.Object

Pre-calculated Coefficients used for filter calculations. For all, sample rate presumed at 50Hz (20 ms).

Derived from this online source. Peter Isza, you are a boss and I owe you a beverage!

Field Summary

Fields

Modifier and Type	Field and Description
static double[]	highpass2HzCoef 81-tap filter.
static double[]	highpass5HzCoef 55-tap filter.
static double[]	lowpass15HzCoef 53-tap filter.
static double[]	lowpass2HzCoef 57-tap filter.
static double[]	lowpass5HzCoef 57-tap filter.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

lowpass2HzCoef

public static final double[] lowpass2HzCoef

57-tap filter. Phase Delay = 0.56 s

Zone	Start	End	Nominal Gain	Ripple
Passband	0 Hz	2 Hz	0 dB	0.75 dB
Stopband	4 Hz	25 Hz	-60 dB	0.02 dB

lowpass5HzCoef

public static final double[] lowpass5HzCoef

57-tap filter. Phase Delay = 0.56 s

Zone	Start	End	Nominal Gain	Ripple
Passband	0 Hz	5 Hz	0 dB	0.63 dB
Stopband	7 Hz	25 Hz	-60 dB	1.57 dB

lowpass15HzCoef

public static final double[] lowpass15HzCoef

53-tap filter. Phase Delay = 0.52

Zone	Start	End	Nominal Gain	Ripple
Passband	0 Hz	15 Hz	0 dB	0.71 dB
Stopband	17 Hz	25 Hz	-60 dB	0.47 dB

highpass2HzCoef

public static final double[] highpass2HzCoef

81-tap filter. Phase Delay = 0.8s

Zone	Start	End	Nominal Gain	Ripple
Stopband	0 Hz	1.9 Hz	-50 dB	0.62 dB
Passband	3 Hz	25 Hz	0 dB	0.70 dB

highpass5HzCoef

public static final double[] highpass5HzCoef

55-tap filter. Phase Delay = 1.1s

Zone	Start	End	Nominal Gain	Ripple
Stopband	0 Hz	3 Hz	-60 dB	0.99 dB
Passband	5 Hz	25 Hz	0 dB	0.67 dB