Gearbox
Realistic model of a gearbox (based on LossyGear)
Library
Modelica/Mechanics/Rotational/Components
Description
This component models the essential effects of a gearbox, inparticular
- in component lossyGear
- gear efficiency due to friction between the teeth
- bearing friction
- in component elastoBacklash
- gear elasticity
- damping
- backlash
The inertia of the gear wheels is not modeled. If necessary,inertia has to be taken into account by connecting components ofmodel Inertia to the left and/or the right flange of componentGearbox.
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_useSupport | useSupport | = true, if support flange enabled, otherwise implicitly grounded | Number | 0 |
mo_ratio | ratio | Transmission ratio (flange_a.phi/flange_b.phi) | Scalar | |
mo_lossTable | lossTable | Array for mesh efficiencies and bearing friction depending on speed (see docu of LossyGear) | Matrix of size Mx5 | |
mo_c | c | Gear elasticity (spring constant) | Scalar | |
mo_d | d | (relative) gear damping | Scalar | |
mo_b | b | Total backlash | Scalar | |
mo_useHeatPort | useHeatPort | =true, if HeatPort is enabled | Number | 0 |
mo_T | T | Fixed device temperature if useHeatPort = false | Scalar | |
mo_phi_rel | phi_rel | phi_rel | Structure | |
mo_phi_rel/fixed | fixed | Cell of scalars | true | |
mo_phi_rel/start | start | Cell of scalars | ||
mo_w_rel | w_rel | w_rel | Structure | |
mo_w_rel/fixed | fixed | Cell of scalars | true | |
mo_w_rel/start | start | Cell of scalars | ||
mo_a_rel | a_rel | a_rel | Structure | |
mo_a_rel/fixed | fixed | Cell of scalars | true | |
mo_a_rel/start | start | Cell of scalars |
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_stateSelect | stateSelect | Priority to use phi_rel and w_rel as states | Structure | |
mo_stateSelect/choice1 | StateSelect.never | Number | 0 | |
mo_stateSelect/choice2 | StateSelect.avoid | Number | 0 | |
mo_stateSelect/choice3 | StateSelect.default | Number | 0 | |
mo_stateSelect/choice4 | StateSelect.prefer | Number | 0 | |
mo_stateSelect/choice5 | StateSelect.always | Number | 0 |
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo__nmodifiers | Number of Modifiers | Specifies the number of modifiers | Number | |
mo__modifiers | Modifiers | Add new modifier | Structure | |
mo__modifiers/varname | Variable name | Cell of strings | ||
mo__modifiers/attribute | Attribute | Cell of strings | 'start' | |
mo__modifiers/value | Value |
Ports
| Name | Type | Description | IO Type | Number |
|---|---|---|---|---|
flange_a | implicit | Flange of left shaft | input | 1 |
flange_b | implicit | Flange of right shaft | output | 1 |
Port 3 | implicit | Support/housing of component | input | mo_useSupport |
Port 4 | implicit | Optional port to which dissipated losses are transported in form of heat | input | mo_useHeatPort |