Card Sliver Quality Monitoring and Control
topic
Online card sliver quality monitoring systems measure sliver mass variation using capacitive or optical sensors at the card delivery, detecting count deviations, periodic irregularities, and spectrogram peaks that indicate mechanical periodicity from damaged clothing, eccentric rollers, or drive irregularities, with spectral analysis identifying defect wavelengths that correlate with specific machine component rotation frequencies.
Role
Provides early detection of card mechanical defects and clothing deterioration through sliver evenness monitoring before quality problems propagate to yarn and fabric, enabling predictive maintenance scheduling based on measured sliver quality deterioration trends rather than fixed time intervals that may miss early-stage defects or cause unnecessary premature maintenance interventions.