trick/trick_sims/SIM_wheelbot/README.md

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# SIM\_wheelbot
---
SIM\_wheelbot is a simulation of a two-wheeled electric vehicle that follows a set of waypoints.
![Picture of Vehicle](images/Figure1.png)
---
### Building the Simulation
In the SIM\_wheelbot directory, type **trick-CP** to build the simulation executable. When it's complete, you should see:
```
=== Simulation make complete ===
```
Now **cd** into models/Graphics/ and type **make**. This builds the display client for the simulation.
### Running the Simulation
In the SIM_wheelbot directory:
```
% S_main_*.exe RUN_test/input.py
```
2016-02-18 22:14:44 +00:00
---
### Inputs
Variable | Type | Units | Default Value
-----------------------------------------------|----------------|-------|--------------
veh.vehicle.distanceBetweenWheels | double | m | 0.183
veh.vehicle.wheelRadius | double | m | 0.045
veh.vehicle.wheelSpeedLimit | double | r/s | 8.880
veh.vehicle.headingRateLimit | double | r/s | 𝛑/4
veh.vehicle.wheelDragConstant | double | -- | 1.875
veh.vehicle.corningStiffness | double | -- | 10.0
veh.vehicle.slowDownDistance | double | -- | 0.5
veh.vehicle.arrivalDistance | double | -- | 0.1
![Picture of Vehicle](images/Figure2.png)
#### Adding Waypoints
Waypoints, for the vehicle to follow, are added with a call to
veh.vehicle.add_waypoint( double N, double W )
### Input/Output
Variable | Type | Units
-----------------------------------------------|----------------|-------
veh.vehicle.position | double[2] | m
veh.vehicle.velocity | double[2] | m
veh.vehicle.heading | double | r
veh.vehicle.headingRate | double | r
### Outputs
Variable | Type | Units
----------------------------------------------|----------------|--------
veh.vehicle.acceleration | double[2] | m
veh.vehicle.headingAccel | double | r
veh.vehicle.driveForce | double[2] | N
veh.vehicle.lateralTireForce | double[2] | N
veh.vehicle.rollingResistForce | double[2] | N
veh.vehicle.forceTotal | double[2] | N
veh.vehicle.vehicleZTorque | double | N*m