Design validation for harsh off-highway conditions

  • 01-Mar-2016 03:16 EST
14624_23576_ACT.jpg

The growing role of software, like that used to coordinate functions for Dana’s hydraulic hybrid technology, requires a greater focus on validation and verification.

The growing role of electronics and software is altering the design process, requiring a greater focus on validation and verification. Tools are evolving to let developers do more tests during the early stages of design while also helping them meet the growing number of requirements.

Model-based engineering has become the norm, making it simpler for engineers to check their designs as projects evolve. The stringent demands of harsh off-highway environments force developers to run a range of simulations including hardware-in-the-loop (HIL) testing.

“There is greater capability built into the system modeling up-front, along with a better modeling of architectures and systems, but it still can drive the critical need for HIL simulation in real time to ensure proper operation and safety of these systems, prior to being deployed and tested in the vehicles,” said Jace Allen, Lead Technical Specialist - Simulation & Test Systems at dSPACE Inc.

Safety standards like ISO 26262 are among the many factors that force design teams to spend more time ensuring that errors are few and far between. Virtual validation tools help developers test for safety while guaranteeing that systems and software meet extreme environmental demands.

“With respect to safety-related software, several actions have to be managed throughout the entire development lifecycle,” said Giulio Ornella, Off-Highway Advanced Engineering Manager at Dana Holding Corp. “These include everything from safety-related requirements to hazard and risk analysis, functional safety assessment, safety functions implementation, HIL testing, and verification and validation.”

Most mobile equipment applications are harsher than industrial applications, so it can be tough to meet requirements. Virtual and real-world tests must cover a broad range of parameters and meet the needs of regulations such as ISO 26262.

“Mobile machines see high vibration, large temperature swings, water spray, and a wide array of power supply and EMI/EMC challenges,” said Kirk Lola, Business Development Manager at Parker Hannifin’s Electronic Controls Division. “This has increased the range and depth of design validation testing. We have seen not only more validation testing requirements, but also testing to more extremes such as temperatures down to -40°C and up to +85°C as well as IP67 water and dust ingress requirement.”

Equipment suppliers are already starting to consider another demanding feature that will have to be added to many systems. Cybersecurity is expected to grow in importance as connectivity makes more vehicles vulnerable to hacking.

“Verification and validation tools provide for simulation of the complete interfaces of the system under test,” Allen said. “This includes those interfaces that need to be analyzed for susceptibility to be hacked, etc. New cyber-based security methods, either home-grown or off-the-shelf, need to be adopted into these testing processes in order to provide for proper verification and validation of these types of issues.”

Share
HTML for Linking to Page
Page URL
Grade
Rate It
4.00 Avg. Rating

Read More Articles On

2016-08-26
The push toward miniaturization in the electronics industry has left designers little or no room for test points, and the expansion of high frequency technologies has resulted in a growing need for test equipment that has the capability to verify these types of very small circuits.
2016-08-26
dSPACE and BTC Embedded Systems offer a solution that improves test depth for the real-time validation of safety-critical applications with extension of classical test methods, easier compliance with safety standards and optimal integration and cross-platform use.
2016-08-26
CNH Industrial and AVL researchers used simulation, test bench, and road testing of a demonstrator vehicle with a WHR system to show significantly reduced fuel consumption.
2016-12-07
Christopher Grundler, the Director of OTAQ for the U.S. EPA, answered questions about Phase 2 rule-making for heavy trucks, global harmonization of emissions regulations, and his outlook for a new national NOx standard. Grundler will be the featured speaker on opening day of the SAE 2017 Government/Industry Meeting taking place January 25-27 in Washington D.C.

Related Items

Training / Education
2013-04-09
Video
2017-03-26
Article
2016-11-11
Article
2016-08-26
Standard
2013-05-03