In the Panther Sine application, tracking filters are essential for accurately analyzing and controlling the test at specific frequencies.

Here's what they're used for and their advantages:

Tracking filters essentially "tune in" to the specific frequency being generated by the sine sweep. They isolate the signal at that exact frequency, filtering out any noise or signals at other frequencies. Advantages of using tracking filters in a sine vibration test include:

•    1. Precise Measurement: They ensure that the measurements you're taking (like acceleration, velocity, or displacement) are solely from the sine wave at the current test frequency. This leads to highly accurate data.

•    2. Accurate Control: For closed-loop control, tracking filters allow the system to precisely monitor the response at the drive frequency. This is crucial for maintaining stable control, especially when dealing with resonances or anti-resonances.

•    3. Noise Reduction: By filtering out unwanted frequencies, tracking filters significantly reduce the impact of noise in your measurements, leading to cleaner and more reliable test results.

•    4. Resonance Identification: During a sine sweep, tracking filters help in clearly identifying and analyzing the system's response at its resonant frequencies. In essence, tracking filters are key to achieving accurate and stable sine vibration testing by ensuring that the analysis and control are focused precisely on the excitation frequency.