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  • Linear actuators get a servo look
    mass, friction, wear, cogging, resonance, and so forth gives direct-drive linear actuators agility and lets them be easily controlled. The most recent advance in direct- drive linear actuators is called a tubular linear actuator. It evolved from linear-motor technology. A conventional way to describe
  • Pneumatic or servo?
    , but also their speed and acceleration while they travel to their final destination. There are many actuator types to consider when replacing a pneumatic system with a servocontrolled system. Actuator types available include electric cylinders with ball screws, rodless actuators with belts
  • Piezo Ceramic - Ultrasonic Actuators
    and the ultrasonic. The operation of piezo ceramic actuators is based on their characteristic of changing length in proportion to the applied voltage. Furthermore, the response of the actuator is extremely fast in comparison with typical servo motors. The fact that the motor length, and therefore
  • Linear actuator simplifies machine building
    Purchase and assembly of multiple components are rendered unnecessary because this actuator combines servo motor and planetary roller screw in one compact unit.
  • Closed-Loop Servo Puts Spring Force On Target
    Assembly Press called EMAP. The servomotor drives an actuator that inserts springs or other components into an assembly (top) under controlled force or displacement with accuracy measuring in the microns. One major difference between this and other systems is in the encoder's algorithm which makes
  • Harmonic Drives ROI
    Harmonic Drive located in Peabody, MA is a leading manufacturer of precision gears, gearheads, servo actuators and motion control systems. The Pratt and Whitney Labmaster Universal has helped Harmonic Drive achieve the high precision they need. Accurate to 0.000002-inch (2 millionths of an inch
  • Guidelines for sizing servohydraulics
    simulations demonstrate relatively stable pressures for the larger cylinder. Typical Bode plots show amplitude response and phase lag of the spool as a function of control-signal frequency. The graph shows operating characteristics of various valves. Linear valves with servo-quality spools provide flow
  • Better bundles with leadscrews
    . The upgrade employed a Kerk Motion Products RGS 10000 screw-driven slide adapted to be an actuator assembly. The servo-driven leadscrew slide combines greater push power with high-resolution motion control. The "Classic " Series of shrink bundlers is the flag-ship product of Exton, Pa. These machines move

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