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Oct 06, 2016
07:33 AM
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Oct 06, 2016
07:33 AM
Dear community,
I'm using DAVE App ACIM_FREQ_CTRL for simple spin a motor using
CPU-14A-V1 (XMC1400 Boot Kit) demoboard.
I'm using Ramp Generator 0 for generate a simple speed ramp.
The following question seems trivial but in reality it isn't:
what is the measurement unit of the parameter Slew rate?
It seems there is no exact relationship between the value set and that measured with the oscilloscope
for all speed target/slew rate values...some works, some not.
For example below there is no match between Expected and Real:
target speed = 3000[rpm], pole pair = 1, slew rate = 3000[u/s]
Expected rise time = 1.00
Real rise time = 1.70
Thank you.
I'm using DAVE App ACIM_FREQ_CTRL for simple spin a motor using
CPU-14A-V1 (XMC1400 Boot Kit) demoboard.
I'm using Ramp Generator 0 for generate a simple speed ramp.
The following question seems trivial but in reality it isn't:
what is the measurement unit of the parameter Slew rate?
It seems there is no exact relationship between the value set and that measured with the oscilloscope
for all speed target/slew rate values...some works, some not.
For example below there is no match between Expected and Real:
target speed = 3000[rpm], pole pair = 1, slew rate = 3000[u/s]
Expected rise time = 1.00
Real rise time = 1.70
Thank you.
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