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Detector to discriminate between tool break acoustic signatures and spiky noise
Detector to discriminate between tool break acoustic signatures and spiky noise
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机译:检测器可区分刀具断路声信号和尖峰噪声
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摘要
In some machining conditions the background noise in an acoustic cutting tool break detection system is a low mean level with fairly dense high amplitude noise spikes. A common tool break vibration signature is the sudden appearance of a dense spiky noise. Digital signal pattern recognition logic uses an up/down counter to reject the noise on the basis of its lower spike density while alarming on such a tool break signature. Preprocessed vibration signal samples are tested against a detection threshold and an alarm generated if those whose amplitude is above the threshold amplitude exceeds those below by a preset count.
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