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A (comparative) study of FS motors for Needle-free Injection (Maximizing…
A (comparative) study of FS motors for Needle-free Injection
Define better
In our application, we like as much average force density per unit weight as possible
Provide the same amount of force, but lighter.
To measure, we need to measure in N/kg
Better construction
Rotor is does not contain magnet
Rotor is structurely sound, can do high speed
No magnet retention problem
Magnet & Coil on the stator, easier to cool
Difference in previous method
assume saturation flux density = 2T
from there determine the iron shell thickness
Performance comparable to Surface Mounted PM
This is question ambiguous
Few research talks about how FS compares
Some say Surface Mounted is better
Some say Flux Switching is better
Writing Ideas
Collecting motor performance in the literature
Put in a statistic plot
Talk about key performance optimization techniques
for Flux Switching
Maximize N/kg
?????????????
Bads
highest cogging in Doubly Salient structures
difficulty with analytical modelling
multiple high order harmonic on backemf waveform
Maximizing performance
Saturation study
Air gap study
Scaling study
Scale dimension linearly
Use the same current density
Teeth width
Teeth angle
Pole number 5 or 7
Construction
Core
C core
E core
Winding
Half/Half
Whole