Monthly Archives: March 2015

HIL testing

Embitel offers testing as a dedicated service. We offer services in the area of software testing (Unit, Integration and system level) as well HIL (Hardware in Loop), MIL(Model in Loop) and SIL testing.

Our skill set in this domain covers all major tool chains such as Mathworks, ETAS, dSpace, MBTech, Opal-RT, Reatis, Tessy, etc.

In one such project, for a German tier2 client, we executed HIL testing using ETAS tool chain. The project scope covers unit testing and integration testing of Exhaust System Software, CAN, KWP2000 and UDS services.

System Overview:

• Participation in test automation, test-plan and test-case preparation
• Multitron Labcar from ETAS as vehicle simulator
• INCA software used for Measurement and Calibration
• Calibration through CCP using ES690 from ETAS
• Flashing through PROF/ JTAG debugger
• Vector CANalyzer for simulation and testing of CAN nodes
• Automation of CAN testing using CAPL programs
• Customer tool for diagnostic testing (KWP2000 over CAN)

Multitron LabcarTools and Technology

• INCA, PROF, ES690
• CANalyzer, CAPL
• Diagnostic tester

Vehicle Simulation

Hybrid powerplant model when tested in non-real time or soft real time causes vibrations in the steering wheel because of the unwanted delays in the system. So, the model needs to be tested in hard real time for high and cornering torques.
Powerplant model is developed in Carsim and imported to Simulink as a library. Sensowheel block sets are used for interfacing with the sensodrive steering wheel and Logitech pedal controls. PCAN communication is used to send and receive messages from the sensodrive controller.

Implementation

• Controller Model development in Simulink
  • Developing the controller model for a vehicle plant model created in Carsim
  • Controller model includes the interface block sets for Sensowheel and Logitech pedal controls

• PCAN Setup for communication
  • PCAN communication is setup between the plant model running on XPC target and the sensowheel

• Hybrid powerplant Model Testing
  • The application code is generated and downloaded to XPC target
  • Hybrid powerplant model is tested for high and cornering torques

Testing and Validation

• Plant model developed in vehicle simulation environment is imported to Simulink as a library.
• Controller is tested in loop with the plant library, pedals and steering wheel.
• Controller is tested for high and cornering torques

Tools

• Simulink
• Carsim
• XPC
• Sensowheel blockset