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| Adaptive control for small-hole EDM process with wavelet transform detecting method
Yi Jiang, Wansheng Zhao*, Xuecheng Xi and Lin Gu
The Journal of Mechanical Science and Technology, vol. 26, no. 6, pp.1885-1890, 2012
Abstract : To achieve an efficient small-hole EDM process, an accurate pulse monitoring strategy and a precise control are both required. In order
to improve the efficiency and stability of the small-hole drilling process, an adaptive control system with a self-tuning regulator is
developed. A high-speed EDM pulses monitoring system based on wavelet transform is implemented to measure the gap status, whose
output is adopted as the feedback signals of the adaptive control system. The discharge waveforms are recorded and analyzed. The experimental
results demonstrate that the arc pulse ratio during small-hole drilling process is reduced remarkably. The machining efficiency
as well as the machining quality is improved significantly.
Keyword : Adaptive control; EDM; Small-hole; Wavelet transform |
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