Modular HIL Simulator

 

CHALLENGE

 

DISTek was tasked by a large OEM to create a modular, full system Hardware-in-the-Loop (HIL) simulator system.

SOLUTION

The engineers at DISTek put its 25 years in the Off-Highway software industry to work and together with the OEM developed a solution using a combination of off-the-shelf hardware, custom components, and a custom software application. DISTek decided to leverage its experience as a National Instruments integrator and focused on using NI hardware and software components in the system.

System Hardware:

  • Real Time Controller – Used to run high speed stimulus, deterministic messaging, and six degree of freedom vehicle models
  • MXI Rio and PXI – Used for FPGA, vehicle communications simulation, and hardware IO interface to the vehicle controllers
  • Standard PC – Used to run Graphical User Interface(GUI) and interact with the rest of the system
  • Vehicle controller(s) and display(s)

System Software

  • Simulink – Used for vehicle plant models including six degree of freedom models
  • LabVIEW – Used to code GUI as well as all simulation software including the FPGA
  • VeriStand – Used for convenience to interface between NI hardware and software components while also managing the loops on the real time controller

A modular system was developed to allow for maximum reuse of hardware. The National Instruments hardware and Windows PC were housed in a rack that connects to a removable controller component. This allows the changing of vehicle profiles without a need to fully reconfigure the rest of the hardware for the system.

RESULTS

Coupling DISTek’s years of experience with the customer’s vision of a modular system has proven to be a great success. These modular HIL systems are now being used to represent dozens of different vehicle platforms with minimal hardware purchase required for each new system.

The HIL solution developed for these systems is now running thousands of hours of tests each year, many of them having been automated so they are run without the need for an operator. This shift to HIL results in huge savings for software testing due to the reduced machine requirements, fuel usage, and operator time. Utilizing these systems also creates free time for on-vehicle operators to test unique corner conditions and perform exploratory testing rather than base level regression tests.

 

To view more DISTek case studies, click here.

For more information or a consultation, contact DISTek.

 

 

Featured DISTek Expert

Name:

Ed

Title

Staff Engineer

Technical Strengths:

Avionics mechanics, systems engineering

Specialty Application Area

BS-Software Engineering, AA-Electronics Engineering, Certified LabVIEW Architect, Certified Professional Instructor, LabVIEW Champion

Past Experience

Avionics mechanics, systems engineering.

DISTek Employee Since:

2001

What I love about my job:

At DISTek, I am part of a variety of different projects, which keeps me constantly learning and applying different practices to new challenges. In addition, I am part of complete processes, from architecting a new test system to implementing it and training customers on their new interface.

Click HERE to become a DISTek EXPERT!