Hardware in the Loop (HiL) CT-AUT Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   What is the first step in setting up a HiL test environment?

   • ADefine the test objectives and requirements
   • BWrite the test automation scripts
   • CCalibrate the I/O interfaces
   • DConnect the ECU to the HiL system
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   What is the primary purpose of Hardware-in-the-Loop (HiL) testing in automotive software development?

   • ATo validate the software of an electronic control unit (ECU) by connecting it to a real-time simulation of its environment
   • BTo simulate the entire vehicle software on a PC without any hardware
   • CTo test the complete vehicle on a physical test track
   • DTo test only the mechanical components of the vehicle
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   What is the purpose of failure injection in HiL testing?

   • ATo verify that the ECU responds correctly to faults, such as sensor failures or communication errors
   • BTo make the test fail intentionally so that the test report shows a failure
   • CTo speed up the test execution
   • DTo replace the need for real-world testing
   Reveal Solution Discussion Select an answer first
5. 24application · medium

   A HiL test for an engine control unit (ECU) is being automated. The test script sends a throttle position step and expects the engine speed to respond within 10 ms. The real-time processor is currently running the plant model at a 1 ms step size. However, the test fails intermittently because the response is sometimes delayed. What is the most likely cause?

   • AThe real-time processor is overloaded, causing occasional missed deadlines in the model execution.
   • BThe plant model is too simple, causing inaccurate engine speed predictions.
   • CThe test script is not synchronized with the real-time clock.
   • DThe ECU's throttle actuator is too slow to respond to the step input.
   Reveal Solution Discussion Select an answer first
6. 25foundation · easy

   What is the purpose of actuator simulation in a HiL system?

   • ATo replace the ECU under test
   • BTo generate sensor signals for the ECU
   • CTo store the test results
   • DTo measure the ECU's output signals and provide appropriate load or feedback to the simulation
   Reveal Solution Discussion Select an answer first