Abstract:

An overview on study and progress of the slip ring technology is presented.The main electrical performance parameters of the slip ring,including contact resistance,insulation resistance,dielectric strength,crosstalk,electrical noise and standing-wave radio are analyzed.The research status quos on electrical contact structure,electrical contact materials and manufacturing process of slip ring are introduced respectively.The future directions of slip ring,namely miniaturization,integration,and expansion into residential areas,are pointed out.

Key words: slip ring;electrical performance parameter;contact resistance;progress