Abstract: Various embodiments may be generally directed to a welding system that monitors an output of the welding system to determine if an output arc should be extinguished or maintained. The welding system can compare an arc voltage output to a voltage threshold and a temporal threshold. When the arc voltage output exceeds the voltage threshold in an uninterrupted manner for the duration of the temporal threshold, an output weld current can be stopped. In turn, the output arc can be broken or extinguished. After a predetermined amount of time, the power source can be re-engaged to prepare for re-ignition of another arc. By tracking the amount of time the arc voltage output exceeds the predetermined threshold, a probability of unwanted arc outs can be reduced or minimized while still providing quick and reliable arc breaking when desired.

Abstract: An arc welding system includes a temperature determination module and a parameter optimization module. The temperature determination module is configured to determine, from among a plurality of possible temperature categories, a temperature category of an electrode during an interruption to an arc welding process on a workpiece based on a comparison of information indicative of a duration of the interruption to one or more timing thresholds. An electric arc between the electrode and the workpiece is extinguished during the interruption. The parameter optimization module is configured to set one or more current parameters of an output current to be applied to the arc welding process when the arc welding process restarts. The current parameters are based on the temperature category of the electrode determined by the temperature determination module.

Abstract: Various embodiments may be generally directed to a welding system that can adjust parameters of a welding process that is restarted after an interruption. The adjusted parameters can account for the temperature of an electrode, parent material, and/or weld pool which may change during the interruption. The adjusted parameters can be optimized based on these temperatures to enhance the quality and reliability of the weld as it restarts.

Abstract: Various embodiments may be generally directed to a welding system that monitors an output of the welding system to determine if an output arc should be extinguished or maintained. The welding system can compare an arc voltage output to a voltage threshold and a temporal threshold. When the arc voltage output exceeds the voltage threshold in an uninterrupted manner for the duration of the temporal threshold, an output weld current can be stopped. In turn, the output arc can be broken or extinguished. After a predetermined amount of time, the power source can be re-engaged to prepare for re-ignition of another arc. By tracking the amount of time the arc voltage output exceeds the predetermined threshold, a probability of unwanted arc outs can be reduced or minimized while still providing quick and reliable arc breaking when desired.

Abstract: Various embodiments may be generally directed to a welding system that monitors an output of the welding system to determine if an output arc should be extinguished or maintained. The welding system can compare an arc voltage output to a voltage threshold and a temporal threshold. When the arc voltage output exceeds the voltage threshold in an uninterrupted manner for the duration of the temporal threshold, an output weld current can be stopped. In turn, the output arc can be broken or extinguished. After a predetermined amount of time, the power source can be re-engaged to prepare for re-ignition of another arc. By tracking the amount of time the arc voltage output exceeds the predetermined threshold, a probability of unwanted arc outs can be reduced or minimized while still providing quick and reliable arc breaking when desired.

Abstract: Various embodiments may be generally directed to a welding system that monitors an output of the welding system to determine if an output arc should be extinguished or maintained. The welding system can compare an arc voltage output to a voltage threshold and a temporal threshold. When the arc voltage output exceeds the voltage threshold in an uninterrupted manner for the duration of the temporal threshold, an output weld current can be stopped. In turn, the output arc can be broken or extinguished. After a predetermined amount of time, the power source can be re-engaged to prepare for re-ignition of another arc. By tracking the amount of time the arc voltage output exceeds the predetermined threshold, a probability of unwanted arc outs can be reduced or minimized while still providing quick and reliable arc breaking when desired.

Abstract: Various embodiments may be generally directed to a welding system that can adjust parameters of a welding process that is restarted after an interruption. The adjusted parameters can account for the temperature of an electrode, parent material, and/or weld pool which may change during the interruption. The adjusted parameters can be optimized based on these temperatures to enhance the quality and reliability of the weld as it restarts.

Abstract: The invention relates to a device (200) for positioning one or several electro-optic contacts (120) on a circuit board in the direction of the beam, which device comprises a first part (150) and a second part (130). At least one of the parts comprises means for attachment to a circuit board (300), and the second part comprises a possibility of housing the electro-optic contact/s at a first position in the second part, with the device further comprising means (170,170′) for letting the second part make a spring-movement in relation to the first part, which spring means contact a second position in the second part of the device, said second position being separate from said first position, whereby the electro-optic contact (120) is brought along when the second part makes its spring-movement, and the electro-optic contact is positioned correctly in the direction of the beam.

Abstract: A method, arrangement, and system enable adaptive calibration of an analog-to-digital converter (ADC) from reference signals with unknown parameter(s) that may vary (e.g., a varying frequency). An analog reference signal s(t) is supplied to an ADC to be calibrated. The output x(n) of the ADC is used by a, e.g., sine-wave reconstruction filter to reconstruct an estimate ŝ(n) of the sampled instances of the signal s(t). A recursive frequency estimator within the sine-wave reconstruction filter produces a frequency estimate of the analog reference signal s(t) from the signal x(n). An adaptive reconstruction filter uses this frequency estimate and the signal x(n) to produce the estimate ŝ(n). When a convergence detector determines that the adaptive reconstruction filter has converged, the estimate ŝ(n) is used to alter values that are stored in a correction table. During functional operation of the ADC, the correction table is used to correct the output values of the ADC.

Abstract: Methods and arrangements enable ADCs to be calibrated from reference signals with unknown parameters and/or with amplitudes that exceed the dynamic range of the ADCs. A given analog reference signal s(t) is supplied to an ADC. The output (x(k)) of the ADC is used by calibration logic to estimate at least one parameter of the reference signal. A FIR filter accepts as input the x(k) signals and outputs an estimate (ŝ(k)) as the sampled instances of the s(t) signal. A reconstruction table is created that approximates the analog input signal in the digital domain using the knowledge of the analog input signal waveform type. The actual ADC outputs are compared to the values in the reconstruction table to produce a correction table for calibration. In an alternative embodiment, calibration logic interpolates the output (x(k)) of the ADC to reconstruct clipped portion(s) of the input analog reference signal s(t) when the amplitude of the input analog reference signal s(t) exceeds the full swing of the ADC.

Abstract: A method, arrangement, and system enable adaptive calibration of an analog-to-digital converter (ADC) from reference signals with unknown parameter(s) that may vary (e.g., a varying frequency). An analog reference signal s(t) is supplied to an ADC to be calibrated. The output x(n) of the ADC is used by a, e.g., sine-wave reconstruction filter to reconstruct an estimate ŝ(n) of the sampled instances of the signal s(t). A recursive frequency estimator within the sine-wave reconstruction filter produces a frequency estimate of the analog reference signal s(t) from the signal x(n). An adaptive reconstruction filter uses this frequency estimate and the signal x(n) to produce the estimate ŝ(n). When a convergence detector determines that the adaptive reconstruction filter has converged, the estimate ŝ(n) is used to alter values that are stored in a correction table. During functional operation of the ADC, the correction table is used to correct the output values of the ADC.

Abstract: A method and system enables ADCs to be calibrated from reference signals with unknown parameters. A given analog reference signal s(t) is supplied to an ADC. The output (x(k)) of the ADC is used by calibration logic to estimate at least one parameter of the reference signal. A FIR filter accepts as input the x(k) signals and outputs an estimate (s(k)) as the sampled instances of the s(t) signal. A reconstruction table is created that approximates the analog input signal in the digital domain using the knowledge of the analog input signal waveform type. The actual ADC outputs are compared to the values in the reconstruction table to produce a correction table for calibration. A continuous time reference signal may be utilized for training the correction table. The method and system is data adaptive, so it may be applied, for example, with any sinusoidal reference input.