The Mid Level Controller is based on the Raspberry Pi Zero W. It is part of the vehicle on-board electronics.

Its purposes are:

The setup and software build for the Raspberry Pi is explained under Vehicle Raspberry Pi.

The following data-flow diagram shows the MLC architecture.

Trajectory Controller

A model predictive controller runs on-board on the Raspberry Pi. It can steer the vehicle to follow a given trajectory.

To see how to use it to control a vehicle, go to Vehicle Commands.

To see how it works, go to https://git.rwth-aachen.de/CPM/Project/Lab/software/blob/master/matlab_scripts/vehicle_dynamics_identification_and_mpc/documentation/main.pdf

Localization

The localization combines the IPS vehicle observation with local vehicle sensor data to determine the vehicle pose. If the IPS vehicle observation is delayed or temporarily unavailable, the localization can continue to give accurate poses through dead reckoning.

Sensor Calibration

The Low Level Controller provides its data as low-resolution integers. The LLC units are chosen to match the required value range and quantization error. The sensor calibration converts the LLC data to floating point values with SI units.

LED Identification

See Indoor Positioning System.

SPI

TODO