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ENGINEERING, PPT 2018 HSC 21b

Outline the benefits of using electric motors to power self-driving vehicles.   (3 marks)

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Successful engines should include three of the following:

  • Reduced amount of tailpipe emissions through the use of renewable energy as the power source.
  • Lighter engine construction produces a better power to weight ratio.
  • Quieter engines reduce noise pollution.
  • Technology enabling simpler integration into an automated vehicle control system.
  • Less moving parts in electric motors mean they break down less often and need less maintenance.
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Successful engines should include three of the following:

  • Reduced amount of tailpipe emissions through the use of renewable energy as the power source.
  • Lighter engine construction produces a better power to weight ratio.
  • Quieter engines reduce noise pollution.
  • Technology enabling simpler integration into an automated vehicle control system.
  • Less moving parts in electric motors mean they break down less often and need less maintenance.

ENGINEERING, PPT 2018 HSC 21a

The diagram shows a self-driving electric vehicle.
 


 

Innovations in global positioning systems (GPS) and sensor technologies are used in the operation of this vehicle.

Describe how both of these innovations are used in the control of the vehicle.   (3 marks)

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  • Sensors can be used to prevent collisions through the detection of objects in the path or vicinity of the vehicle.
  • GPS shows the vehicle’s position on the Earth’s surface using triangulation.
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  • Sensors can be used to prevent collisions through the detection of objects in the path or vicinity of the vehicle.
  • GPS shows the vehicle’s position on the Earth’s surface using triangulation.

ENGINEERING, PPT 2021 HSC 25a

Control technologies are used in modern vehicles.

Outline the basic principle behind the operation of ONE of these technologies.   (2 marks)

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Successful answers should describe the basic principle and one of the following:

Basic principle:

  • Control technologies involve a signal input from the car/driver to a processor which provides an output or action to be taken.

Technology examples:

  • Cameras monitoring the position of a car in the lane. If the car exits the lane, the processor detects this and outputs an alarm to the driver.
  • Semi-autonomous driving. The car can activate brakes without driver intervention if a collision/obstacle is detected.
  • Cruise control. A speed is given as an input and a fuel rate is given to the engine to maintain this speed.
  • PID control. Like cruise control, this uses input from LIDAR sensors and cameras to detect obstacles and other cars, to slow down if necessary.
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Successful answers should describe the basic principle and one of the following:

Basic principle:

  • Control technologies involve a signal input from the car/driver to a processor which provides an output or action to be taken.

Technology examples:

  • Cameras monitoring the position of a car in the lane. If the car exits the lane, the processor detects this and outputs an alarm to the driver.
  • Semi-autonomous driving. The car can activate brakes without driver intervention if a collision/obstacle is detected.
  • Cruise control. A speed is given as an input and a fuel rate is given to the engine to maintain this speed.
  • PID control. Like cruise control, this uses input from LIDAR sensors and cameras to detect obstacles and other cars, and to slow down if necessary.