Unmanned Aerial Vehicle

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Unmanned Aerial Vehicle

• Srinath Kota
• Autonomous Control Engineering (ACE)Center UTSA
• College of Engineering, Undergraduate

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Objective

• Objective
• Build an autonomous helicopter
• Will automatically fly to target, take picture,
  fly back and land
• Starting base is the Draganflyer V Ti
• RC helicopter

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UAV Introduction

• Drive system upgrade
• Use DraganFlyer VTI as a model
• Sensor Addition
• GPS
• Thermal Sensors
• Sonar
• Accelerometers
• Gyros
• Camera Addition
• Image capture

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Goals Achievements

• Goals
• Vertical Take off and Landing MAV
• Stable and Maneuverable
• Flight Time gt10 min
• Minimum Payload 250g
• As small as possible
• Design, construction, matlab simulation and
  control
• Achievements
• 4 propellers MAV, 6 DOF
• Visual Interface for Control and Monitoring
• Take off, stable hovering and landing

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How does it fly ? Cont

• Power System
• This set of components is located on the
  horizontal circuit board and is essentially a set
  of 4 speed controllers one for each of the 4
  motors with FET transistors. FET means Field
  Effect Transistors. These devices act as
  electronic valve. There are 3 wires on each FET.
  Two of the wires supply voltage to its motor,
  while the third wire (the trigger) is how the
  valve is opened. Apply a small voltage, the
  valve opens a little and the motors start to
  turn. Apply a little more voltage, and the motor
  turns faster still.
• When a propeller, a force is generated by the
  motor called Torque. The propeller wants to
  turn one way and the motor, the other way. But
  according to Newtons law, a force in one
  direction will produce the same force in the
  opposite direction.

Another force caused by uneven thrust of the
propellers at differing attitudes, is known as
P factor. in helicopters.
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Future work _at_ UAV

• Implementation of Solar Panels
• Image Recognition
• More Payload capacity
• Sync with Land and underwater robots

7.2 V Solar Panel _at_ 200ma
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Questions ?