Ang laserproblemet. Kan det vara så att du försöker köra för låg effekt på laserröret så att den går i det område där den inte tänder 100% av gångerna... Vid för låg effekt tänder inte ljusbågen då man inte joniserar gasen homogent över röret... (Kaotiskt område för röret) (Gäller högspänningsmatade co2 glasrör)
Ang stegmotorer... Testa växla drivare mellan x och y axel och se om problmet följer drivaren. Test 2, Kanske kan man växla bara insignalen o låta utsignalen sitta kvar för att köra axlar växlade för att se om problemet följer mekaniken eller drivningen...
Klippt från Perplexity:
Limitations of Glass CO₂ Tube Power Modulation
Electrical Response Time: The glass tube is powered by a high-voltage DC supply that produces continuous wave output. Switching and modulating this kind of supply is much slower and far less precise than RF-excited tubes, making low-power settings unstable and causing delayed or uneven laser response.
Nonlinear “Firing Threshold”: The CO₂ gas must ionize and sustain a plasma for lasing. Below a minimum current and voltage (the “lasing threshold”), the tube simply does not produce a beam. This means there is a baseline below which no light is generated, preventing true 0–100% analog modulation.
PWM (Pulse Width Modulation) Limits: Power is often controlled by pulsing the laser with PWM, but because the plasma response is slow, low duty cycles (such as 1–10%) do not produce proportional or stable output. That’s why at very low percentages, the laser may not actually fire.
Physical Characteristics: DC glass tubes are designed for simple on/off control or slow power changes rather than high-speed, fine power modulation. The ionized plasma cannot respond quickly to control signals.
RF CO₂ vs Glass Tube Modulation
RF-excited CO₂ lasers use radio frequency drivers, enabling extremely fast modulation, true analog control and very fine pulse shaping, with stable output down to low percentages of total power. Glass tubes, in contrast, cannot achieve high-speed or linear modulation due to their excitation mechanism.
Practical Implications
For cutting and engraving where power control below ~20% is needed, glass tube CO₂ lasers are less precise and often unreliable. They may not fire at low power settings or may not maintain beam stability at the edges of their modulation range.
