Actuators
Download
1 / 9

Actuators - PowerPoint PPT Presentation


  • 133 Views
  • Uploaded on

Actuators. ABE 425 Kaustubh Bhalerao. Different types of (electrical) motors. Type of driving voltage DC / AC Type of motion Continuous, stepped, servomechanism, rotary or linear H-bridge. H-bridge. DC motors. Brushed DC. Brushless DC. Armature has magnets

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Actuators' - taylor


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Actuators

Actuators

ABE 425

Kaustubh Bhalerao


Different types of electrical motors
Different types of (electrical) motors

  • Type of driving voltage

    • DC / AC

  • Type of motion

    • Continuous, stepped, servomechanism, rotary or linear

  • H-bridge



Dc motors
DC motors

  • Brushed DC


Brushless dc
Brushless DC

  • Armature has magnets

  • Stator is electronically commutated

  • High power-weight ratio

  • Compact, quieter

  • More complex to drive

  • Require expensive electronic speed control (ESC)

  • Applications – high-speed motors (drones, RC racers, medical equipment)


Steppers
Steppers

  • Somewhat similar to brushless DC

  • Provide incremental rotating motion through discrete steps. 1 pulse = 1 step.

  • Bipolar / unipolar. Bipolar are easier to drive

  • Require stepper driver circuit

  • Useful for robotics – printer heads – where you need precise motion.


Servos
Servos

  • Limited range of motion (between 180-270 degrees)

  • Position is feedback-stabilized

  • Continuous rotation servos are available

  • Signal encoded as a PWM. Easy to drive

    • PWM period – 20 ms

    • Ton – 1-2 ms or 5-10% Duty cycle.

  • Robotics, avionic control


Linear motors
Linear motors

  • Continuous, direct, servo

  • Lifting platforms

  • Aircraft landing gear


Driving inductive devices
Driving inductive devices

  • Inductive ‘kick’

  • Must use protective diodes

  • True for relays, motors etc.

  • General de-coupling strategies.


ad