Accession Number:

ADA609243

Title:

Real-time Simulations using QuaRC and RT-LAB and Development of a Hardware-in-the-Loop Indoor Facility for Robot Formations

Descriptive Note:

Contract rept.

Corporate Author:

NUMERICA TECHNOLOGIES INC QUEBEC CITY (CANADA)

Personal Author(s):

Report Date:

2009-09-01

Pagination or Media Count:

96.0

Abstract:

This report will present two commercial software environments used to distribute and execute real-time simulations QuaRC and RT-Lab. Both QuaRC and RT-Lab allow the user to develop simulation models using MatlabSimulink and include hardware, such as data acquisition boards, to connect to real vehicles and systems. In addition, QuaRC can be used to program embedded systems such as wheeled mobile robots and aerial vehicles. This report will present formation flight models that have been modified in order to be compliant to QuaRC or RT-Lab. The simulations are composed of six to ten unmanned aerial vehicles, or UAVs, following a commanded trajectory while maintaining a prescribed trajectory. Models presented also include abrupt fault detection and formation shape morphing on operators request. Vehicle models and dynamics are based on almost lighter-than-air ALTAV vehicles, unicycles and quadrotor vehicles. Lowlevel controllers used to stabilize these UAVs are feedback linearization controllers. Formation controller is of leader-to-follower type. Simulation results are displayed in real-time on a three-dimensional viewer X-Plane. The feedback linearization controller has been implemented on an embedded computer on board a wheeled mobile robot QBot. An infrared camera system OptiTrack camera setup is used to measure the QBots position and orientation. This information is then sent from the base station to the wheeled mobile robots embedded computer using a wireless link in order to close the lowlevel controllers loop. This report will then present major differences between QuaRC and RT-Lab as well as advantages and inconvenient of using either software solution.

Subject Categories:

  • Computer Programming and Software
  • Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE