# Coupling
## MicroSim spec
- **Recommended sim type:** coupled oscillators
- **Microsimmability score:** 64/100
- **Layout:** drawing region (canvas) on top; control region (sliders/buttons) below.
### Parameters (tunable controls)
- `Coupling strength`
- `Frequency spread`
- `Damping`
### What animates
Two oscillators trade [[Energy|energy]] and lock together as coupling strength rises.
### Learning objective
Show how coupling links the dynamics of two subsystems.
## Links (Wikipedia order)
<!-- injected from _registry/childlinks/Coupling.json (2026-07-30T02:09:12Z) -->
`Alloy_wheel` · `Alternator` · `Angular_displacement` · `Automated_manual_transmission` · `Automatic_transmission` · `Automotive_engine` · `Backlash_(engineering)` · `Bore_(engine)` · `Car` · `Chain_drive` · `Clutch` · `Constant-velocity_joint` · `Continuously_variable_transmission` · `Coupling_(disambiguation)` · `Cross_section_(geometry)` · `Diesel_engine` · `Differential_(mechanical_device)` · `Direct-drive_mechanism` · `Direct-shift_gearbox` · `Drive_shaft` · `Drive_wheel` · `Dual-clutch_transmission` · `Electric_generator` · [[Electric_motor]] · `Electric_vehicle` · `Electrorheological_clutch` · `Epicyclic_gearing` · `Fluid_coupling` · `Friction_drive` · `Fuel_cell_vehicle` · `Gear` · `Gear_stick` · `Geislinger_coupling` · `Giubo` · `Hirth_joint` · `History_of_steam_road_vehicles` · `Hotchkiss_drive` · `Hubcap` · `Hybrid_vehicle` · `Hybrid_vehicle_drivetrain` · `Internal_combustion_engine` · `Ireland` · `Jaw_coupling` · `John_Oldham_(engineer)` · `Key_(engineering)` · `Limited-slip_differential` · `Line_(geometry)` · `Locking_differential` · `Magnetic_coupling` · `Manual_transmission` · `Manumatic` · `Maraging_steel` · `Off-road_tire` · `Paddle_steamer` · `Parking_pawl` · `Petrol_engine` · `Pipe_(fluid_conveyance)` · `Plug-in_hybrid` · `Polyoxymethylene` · `Powertrain` · `Preselector_gearbox` · `Racing_slick` · `Radial_tire` · `Rag_joint` · `Railway_coupling` · `Rain_tyre` · `Rim_(wheel)` · [[Robotics]] · `Rotary_encoder` · `Run-flat_tire` · `Run-out` · `Schmidt_coupling` · `Semi-automatic_transmission` · `Shift-by-wire` · `Snow_tire` · `Spare_tire` · `Spring_(device)` · `Steering` · `Thrust` · `Tire` · [[Titanium]] · `Tongue_and_groove` · `Torque` · `Torque_converter` · `Torque_density` · `Torque_limiter` · `Transaxle` · `Transmission_(mechanical_device)` · `Transmission_control_unit` · `Tubeless_tire` · `Universal_joint` · `Vibration` · `Wheel` · `Wheel_hub_assembly` · `Windsurfing`
> p5.js MicroSim stub · part of Systems Thinking · [Wikipedia source](https://en.wikipedia.org/wiki/Coupling)
> Relation: subfield of systems thinking.
## Concept summary
A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both.
## Build checklist
- [ ] Claim it: set `status: in-progress` + `lease` + `leased_at`
- [ ] Write the child page explaining the concept (tie it back to systems thinking)
- [ ] Finalize parameter ranges and defaults
- [ ] Implement the p5.js sketch (drawing + control regions)
- [ ] Add caption + the learning objective on the page
- [ ] Set `status: done`
## p5.js sketch
```javascript
// MicroSim: Coupling
let controls = {};
function setup() {
// createCanvas(...); create sliders for the parameters above.
}
function draw() {
// background(...); read controls; render coupled oscillators; respond live.
}
```
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Back to Systems Thinking · Wikipedia: [Coupling](https://en.wikipedia.org/wiki/Coupling)
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<!-- SEMIOTIC-PROFILE:START -->
## Semiotic profile
> *The semiotic universals this article invokes, machine-derived from the crossref — **unverified** (born so). Populated 2026-07-06 for the Systems room.*
**Universals (6):** 🟡 system (5) · 🟢 oscillation (4) · 🟢 energy (2) · 🟢 damping (1) · 🟢 frequency (1) · 🟢 rotation (1)
**Enter by sign:** Systems Semiotic Gateway · Alphabetum · Icon Registry · ← Systems Portal
<!-- SEMIOTIC-PROFILE:END -->
## Wikipedia : Wikitube
**Strict pair:** [Wikipedia](https://en.wikipedia.org/wiki/Coupling) : [Wikitube](https://en.wikitube.io/wiki/Coupling)
## Previous hub tags
Tree parents: [[Complex_system]] · [[Systems_theory]].
Legacy hubs: none.
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*Sources: 1 legacy note. Minted wave 1, 2026-07-30 (v1.6 order).*