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Gearbox

Realistic model of a gearbox

 Description The Gearbox component models the essential effects of a gearbox, in particular, losses due to bearing friction and sliding friction in the teeth, elasticity, damping, and backlash. Inertia is not modeled. The component consists of a Lossy Gear component and a Elasto-Backlash component connected in series.

Connections

 Name Description Modelica ID ${\mathrm{flange}}_{a}$ Flange of left shaft flange_a ${\mathrm{flange}}_{b}$ Flange of right shaft flange_b $\mathrm{support}$ support $\mathrm{heatPort}$ heatPort

Parameters

General Parameters

 Name Default Units Description Modelica ID $r$ $1$ $1$ Transmission ratio $\left(\frac{{\mathrm{\phi }}_{a}}{{\mathrm{\phi }}_{b}}\right)$ ratio $\mathrm{Loss Table}$ $\left[0.,1.,1.,0.,0.\right]$ $1$ Array for mesh efficiencies and bearing friction depending on speed (see LossyGear) lossTable $c$ $100000$ $\frac{Nm}{\mathrm{rad}}$ Gear elasticity (spring constant) c $d$ $0$ $\frac{Nms}{\mathrm{rad}}$ Relative gear damping d $b$ $0$ $\mathrm{rad}$ Total backlash b Use Heat Port $\mathrm{false}$ True (checked) means heat port is enabled useHeatPort Use Support Flange $\mathrm{false}$ True (checked) enables the support flange useSupport

 Name Default Units Description Modelica ID $\mathrm{prefer}$ Prioritize ${\mathrm{\phi }}_{\mathrm{rel}}$ and ${w}_{\mathrm{rel}}$ as states stateSelect