Sensors and Actuators

This module introduces the student to the fundamentals of EV sensors and actuators. In addition to pressure and temperature sensors, the operating principles of ultrasonic sensors and the purpose of digital cameras in driver assist systems is also covered. The student will also learn the main types of actuators on the body of EVs and be able to describe the operation of solenoid valves and motor position sensors. In addition, the steps required for troubleshooting sensors and actuators is also discussed.

Learning Outcomes:

Upon completion of this module the student will be able to:

  • List the four main quantities measured by sensors in EVs
  • Describe the difference between and NTC and PTC thermistor
  • Name three applications for pressure sensors in EVs
  • Explain the operating principle of ultrasonic sensors
  • List four applications of digital cameras in driver assist systems
  • Name three types of actuators on the body of EVs
  • Describe the operation of solenoid valves in EV applications
  • List four applications of temperature sensors in EV powertrains
  • Explain the difference between Hall-effect and shunt current sensors
  • Name the two methods of motor position sensing
  • Discuss how speed is measured in an EV
  • Describe the danger of thermal runaway & how it can be prevented
  • List the three basic steps for troubleshooting sensors and actuators
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