| 摘要 |
<p>An apparatus and process for determining whether a fault has occurred in a welding process while the process is under way. The invention is applicable to welding and cutting processes where there is an arc plasma, such as gas-metal arc welding, tungsten-inert gas welding, pulsed welding, resistance welding and submerged welding. It involves sampling welding voltage and welding current to provide first and second signals, generating artificial third signals from these dependent on values of the first and second signals through generalised discrete point convolution operations, identifying corresponding values as triplets and collecting triplets of values into groups or regions.</p> |
