chattering

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chattering

[′chad·ə·riŋ]
(control systems)
A mode of operation of a relay-type control system in which the relay switches back and forth infinitely fast.

chattering

A malfunction in hydraulically operated brakes that results in heavy vibrations. The malfunction is caused by a glazed surface on the brake disc, alternately producing friction and then permitting the lining to slip over the disc.