Piezoelectric actuators-Used in various mechanical engineering applications

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Piezoelectric actuators-Used in various
mechanical engineering applications
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• There can be many different applications of
  piezoelectric materials in various mechatronic
  systems. Also, as an actuator too piezoelectric
  material can have plenty of scope if the
  designers can think of out of box solutions.
• These multilayer piezo actuators can be
  classified in many different types
• Piezoelectric actuators.
• Generally, these actuators are used in internal
  combustion engines for controlling fuel injection
  system.
• Electrochemical actuators.
• It has use in airbag expansion systems.
• Artificial muscles.
• You can find in humanoid robots this is used for
  manipulation and mobility features.
• Shape memory actuators.
• You can find these actuators are used in robotic
  hands and fingers.

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• Many more developments are taking place and many
  other unconventional applications of such
  actuators are expected based on electrostatic,
  electro and magneto striction principles.
• What are the benefits of piezoelectric actuators
• Following are few attributes of these actuators.
• Its resolution is very high and therefore with
  very little change in supply voltage it can be
  either converted or detected for linear motion.
• It is possible to attain very high actuation
  force without any loss of precision.
• You can get very high response time even below
  one milli second.
• Since there is no moving part involved hence
  there is no question of friction or wear and tear
  etc. and therefore after 500 million cycles too
  there is no fatigue or aging possible.

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• Very low power consumption.
• During its operation, no magnetic field is
  generated.
• Due to the above attributes, they are popularly
  used in various precision mechanical engineering
  applications, optics systems, medicines and
  microelectronics applications.