{"@context":"https://schema.org","@type":"TechArticle","id":"TR-MAG-001","slug":"magnetic-drive","canonical_url":"https://flavorotor.com/research/magnetic-drive","machine_readable_url":"https://flavorotor.com/research/data/chapters/magnetic-drive.json","markdown_url":"https://flavorotor.com/research/markdown/magnetic-drive","title":"Magnetic drive system","description":"Transmission ratio, overload behaviour, preliminary calculations and the required slip-torque validation.","chapter":"Experimental platform","version":"1.1","updated":"2026-07-26","table_of_contents":[{"id":"definition","label":"Design definition"},{"id":"kinematics","label":"Kinematic model"},{"id":"force-model","label":"Why the earlier force estimate is not a final result"},{"id":"test","label":"Required validation"},{"id":"provenance","label":"FlavoRotor design provenance"}],"html":"
In brief

Transmission ratio, overload behaviour, preliminary calculations and the required slip-torque validation.

\"Magnetic
Magnetic coupling interface.CAD record; transmitted torque remains subject to bench measurement.
\"Exploded
Driving pinion construction.Original component view from the v2.0 report.
\"Magnet
Driven-ring magnet layout.Geometry supports the analytical transmission model; slip torque and endurance require measurement.
\n

Design definition

\n
ParameterDesign record
Driving wheel teeth15
Driven wheel teeth146
Nominal ratio146/15 = 9.733:1
Magnet typeNdFeB N42, Ø8 × 3 mm in the v2 specification
Nominal air gap2.5 mm in the v2 specification
Intended behaviournon-contact torque transfer with overload slip
\n

Kinematic model

\n
MAG-1
i = Z₂ / Z₁ = 146 / 15 = 9.733
Nominal transmission ratio.
\n
MAG-2
n₂ = n₁ / i
Nominal driven speed if synchronism is maintained.
\n
MAG-3
T₂ = 60 / n₂
Driven-wheel rotation period in seconds.
\n

Why the earlier force estimate is not a final result

\n

A magnetic dipole approximation can support preliminary sizing, but the short separation, finite cylindrical magnets, alternating polarities, tooth geometry and simultaneous interactions violate the simplest far-field assumptions. The resulting torque must therefore be treated as an analytical estimate, not a verified 3.9 N·m capability.

\n

Required validation

\n
TestMethodReported output
Static slip torqueforce gauge at known radiustorque-angle curve and peak slip torque
Starting loadincremental drum loadminimum starting torque and motor current
Speed stabilityencoder or video tachometrymean RPM, SD and periodic ripple
Enduranceloaded operation over defined hoursslip events, temperature and drift
Misalignmentcontrolled axial/radial offsettorque margin and failure threshold
\n
MAG-4
SF = τslip,measured / τrequired,max
Safety factor based on measured slip torque and measured worst-case required torque.
\n\n

FlavoRotor design provenance

The system-specific configuration on this page is traced to the supplied FlavoRotor engineering records.

","text":"In brief Transmission ratio, overload behaviour, preliminary calculations and the required slip-torque validation. Magnetic coupling interface. CAD record; transmitted torque remains subject to bench measurement. [I02] Driving pinion construction. Original component view from the v2.0 report. [I02] Driven-ring magnet layout. Geometry supports the analytical transmission model; slip torque and endurance require measurement. [I02] Design definition Parameter Design record Driving wheel teeth 15 Driven wheel teeth 146 Nominal ratio 146/15 = 9.733:1 Magnet type NdFeB N42, Ø8 × 3 mm in the v2 specification Nominal air gap 2.5 mm in the v2 specification Intended behaviour non-contact torque transfer with overload slip Kinematic model MAG-1 i = Z₂ / Z₁ = 146 / 15 = 9.733 Nominal transmission ratio. MAG-2 n₂ = n₁ / i Nominal driven speed if synchronism is maintained. MAG-3 T₂ = 60 / n₂ Driven-wheel rotation period in seconds. Why the earlier force estimate is not a final result A magnetic dipole approximation can support preliminary sizing, but the short separation, finite cylindrical magnets, alternating polarities, tooth geometry and simultaneous interactions violate the simplest far-field assumptions. The resulting torque must therefore be treated as an analytical estimate, not a verified 3.9 N·m capability. Required validation Test Method Reported output Static slip torque force gauge at known radius torque-angle curve and peak slip torque Starting load incremental drum load minimum starting torque and motor current Speed stability encoder or video tachometry mean RPM, SD and periodic ripple Endurance loaded operation over defined hours slip events, temperature and drift Misalignment controlled axial/radial offset torque margin and failure threshold MAG-4 SF = τ slip,measured / τ required,max Safety factor based on measured slip torque and measured worst-case required torque. FlavoRotor design provenance The system-specific configuration on this page is traced to the supplied FlavoRotor engineering records. [I02]","source_ids":["I02"],"visuals":[],"sources":[{"id":"I02","authors":"FlavoRotor project team","year":2026,"title":"FlavoRotor v2.0 system architecture","publication":"Internal engineering design report","doi":null,"url":"/research/platform","source_type":"internal primary record","relevance":"Documents the proposed magnetic drive, axial lighting, four-channel peristaltic dosing and imaging architecture.","verification":"Derived from the original FlavoRotor v2.0 engineering document","verified_on":"2026-07-26","verification_status":"INTERNAL PRIMARY RECORD","verified_against":"Original internal project file and extracted media"}]}