Hello,
After the last consultation, I have realized the function I needed to implement last time.
Now, I am using this EVM board to drive one of our magnetic levitation pumps. During the test, I found that in the chip open loop mode, the pump can rotate and reach the preset open-close loop threshold speed. However, the power The value is much larger than our existing controller, as shown in Figure 1 using EVM board test, our other controller power is less than 10W. At this point, lock0 could not be cleared for some reason.
In addition, when in close loop mode, the pump cannot be turned on, and the accessories are waveforms and register settings (Figure 3-5). The blue line in the figure is the collected phase V current, and there is a significant jump at the end of the current waveform (Figure 2).
I also tested the case where lock5 is not checked. The waveform is shown in Figure 6.
Please help me analyze what is the reason and how do I need the chip to drive our pump normally?
Thank youpics.zip
