The actuators and accessories technology

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The actuators and accessories technology

Today, most Asian industries require sophisticated and precise product lines, so manufacturers and suppliers of actuators and accessories need to stay up to date and strive for global leadership in this technology.

  1. Classification of actuators and accessories

The Straight-line actuator is a drive that produces a linear motion, in contrast to the rotary motion of a conventional electric motor.

  1. Classify

  • Mechanical actuator
  • Hydraulic actuator
  • pneumatic actuator
  • piezoelectric actuators
  • electromechanical actuators
  • Linear actuator
  • The executive structure stretches straight

(+) Pro

(-) Cons

#Advantages and disadvantages

  1. Mechanical actuator

+) Cheap. Repeatable. No power supply required. Closed. The behavior of expansion or contraction is identical.

(-) Works only manually. There is no automatic mode.

  1. Electromechanical actuators

(+) Cheap. Repeatable. An operation can be automated. Closed. The behavior of expansion or contraction is identical. DC motor or stepper motor. May return good location.

(-) Many tilted moving parts are worn.

  1. Linear Actuators

(+) Simple design. Need the least moving parts. Can achieve high speed. Closed. Extension behavior or consistent contraction.

(-) Low to moderate force.

  1. Piezoelectric

(+) Can move very small movements at high speed. Consume almost any energy source.

(-) Short trips unless amplified by mechanical means. High voltage requirements, usually 24V or larger. Expensive, and fragile. Only good when compressed, not good when pulled. Often used for Fuel Inks

  1. Actuator- Hydraulic

(+) Can create huge force.

(-) May be leaked. Request placement feedback to repeat. Requires a hydraulic pump on the outside. Some designs only when compressed.

  1. Actuators- Compressed air

(+) Powerful, lightweight, simple, fast.

(-) Exact position control except at complete stops.

  1. Actuators – Wax motors (beeswax)

(+) Works smoothly.

(-) Not as reliable as other methods.

  1. Actuator – Segment shaft

(+) Very compact. The range of movements is greater than the length of the actuator.

(-) Both straight and rotary motion.

  1. Moving coil

(+) Force, position and speed can be controlled and repetitive. Ability to achieve high speed and accurate positioning. Can move straight, rotate, and act straight + rotate.

(-) Requires feedback to be repeated.

  1. (MICA) – the adjustable iron actuator

(+) Generates large and manageable force. The greater the force and the less the loss compared to the winding. Loss easily dissipated. Easy electronic driver (driver) for design and installation.

(-) The journey is limited to a few millimeters, less linear than the winding.

Some essential concepts about actuators:

# Mechanical actuator

Straight-line mechanical transmission mechanisms typically operate by converting rotary motion into straight motion. This conversion is usually done through some simple structure such as screws; Wheel and shaft; Cam (Cam actuators operate on the same principle as wedges, but support for relatively restricted travel.) When a cam shaped like a rotating wheel, its unusual shape is used to produce out force at the bottom of the shaft.)

# Hydraulic actuator

Hydraulic actuators or hydraulic cylinders usually consist of a hollow cylinder with a piston attached to it. An unbalanced pressure acting on the piston produces a force that can move an object outside.

Due to the almost non-compressible fluid, a hydraulic cylinder can provide precise control of the piston. The movement only occurs along the axis of the piston.

# Piezoelectric actuators

Characteristics: These motors have similarities and differences compared to conventional motors are used as follows:

* The same between conventional motors and piezo motors:

The same is the electric motor, turning power into mechanical, rotary or straight.

* Different basic:

Current electric motors use electromagnetic principles, emitted by windings wrapped around the steel core and from which the stator pushes the rotor to torque the muscles.

The piezoelectric motors use material-varying properties when applied to the stator to convert electrical energy into mechanical waves that drive the rotor without the word as a traditional engine.

Advantages of piezo motors

  • Does not interfere with the current in electronic circuits, thus causing system inaccuracy because it does not create a magnetic field during operation.
  • No damage, very durable. Only corrosion or fatigue due to the simple structure of fewer parts (only rotor and stator push each other, no brush, no winding, so no fire wire).
  • Works very accurately, for example, we want to give it a half turn, it turns right 180 degrees to stop, this is very difficult and need more complex parts with the traditional engine to do this.
  • When stopping, no power is needed to keep the stop position. This is very significant in fabrication and automation.
  • Does not make a noise that human ear can hear because it works with ultrasonic level so it. This is a great function of the piezo.
  • It can be manufactured to a very small size at will, which allows it to go far beyond traditional motors with small size requirements suitable for applications.
  • Performance is much higher than traditional motors, no power loss for heating coils, brushes and steel cores.
  • Adjustable backward, swinging at any speed. This is also a superior feature.
  • Volume is much lighter than traditional engines of the same capacity.
  • It is not dangerous because there is no fire or explosion in this type of motor, as it consists of only one plate capable of producing mechanical waves that push the other plate spinning.


In the future, this type of engine will be widely used because of its great features in the technical optimization of engineering products. In countries like USA, Europe, Japan are pioneering research and application.

actuators and accessoriesStandard and compact structure

A linear motion drive using a motorized standard motor is a separate cylinder mounted on one side of the drive mechanism, parallel or perpendicular to the actuator. The motor can be attached to the end of the actuator. Transmission motors are typical architectures with a solid drive shaft attached to the actuator screw.

Straight-line actuators use specially designed motors to fit the motor and drive to the smallest possible volume.

The inner diameter of the motor shaft can be extended, so the control shaft can be emptied. A screw and nut can thus occupy the center of the motor, without the need for additional gear between the engine and the screw.

The information of actuators and accessories in this post maybe not enough for you, let contact some supplier or can explore more on the professional site.