Moving Coil Technology & Benefits

Im Mittelpunkt aller SMAC Antriebe steht der lineare Antrieb, auch als Tauchspulenantrieb bezeichnet. Das grundlegende Prinzip entspricht dem eines Lautsprechers mit Permanentmagnet. Der Tauchspulenantrieb befindet sich in einem starken Magnetfeld und ein Stromfluss durch die Spule erzeugt eine Kraft in beide Richtungen. Im SMAC Antrieb wird Tauchspule zu einem idealen Linearmotor.

Die erzeuge Kraft wird durch folgende Gleichung bestimmt:

F  N I B

wobei:
  F die erzeugte Kraft ist
  N die Anzahl der Windungen in der Spule (konstant)
  I der Strom der durch die Spule fließt und
  B der magnetische Fluss (konstant)

Daher kann durch Steuerung des Stroms die erzeugte Kraft kontrolliert werden.

Benefits of Moving Coil Technology

• Lower moving mass with the voice coil actuator means extremely high acceleration and velocity, as opposed to the heavier “moving magnet” technology used in most linear motors.
• Safe and energy efficient: operates at low current, typically at 1.5 amps at 24 volt DC.
• Quite (< 55dB), airless operation: no expensive compressed air generation required. No air consumption or air leaks to attend to. No compressed air generating environmental particulate contamination.
• No pressure valves, no force fluctuations caused by air pressure fluctuations.

SMAC Unique Features and Advantages

• Fully programmable in Position, Acceleration, Velocity and Force.
• Direct drive = no backlash, a very high degree of accuracy & repeatability.
• Sub-micron resolution (5µm to 100nm)
• Force control = Soft-Land capability: light force without damaging parts/material being handled.
• >250 million cycles MTBF = long operation life

SMAC Actuators Offer Flexibility:

• Integrated position measuring system with glass scale and optical reader head (no contact wear).
• Ability to switch between operations - force, position and velocity mode - at any time.
• “On the fly” adjustable movement allows quick changeover.
• Constant force monitoring and control.
• Digital and analog input/output channels.
• SMAC linear motors are a servo system, hence can be programmed to decelerate smoothly and quickly. Mechanical slamming can be totally eliminated.
• Competitively priced electric actuators that offer all above features and benefits.

For more information on SMAC actuators, contact us to request a product demo.