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  • Toward the Instant-On Actuator
    It is important to understand what factors can delay the turn-on of devices that employ electromagnetic action. A typical magnetic-solenoid actuator is axisymmetric, because it has a central axis around which all its parts are revolved, including its cylindrical plunger armature made of solid steel
  • Linear actuators get a servo look
    , and piston friction. Direct-drive linear-actuator technology can provide a better approach. Direct drive refers to motion created by the direct application of electromagnetic drive force, rather than through a belt, ball screw, or some other intermediate drive. Of course, servomotors have been used
  • Operating Principles for Inductive Proximity Sensors
    Inductive proximity sensors are used for non-contact detection of metallic objects. Their operating principle is based on a coil and oscillator that creates an electromagnetic field in the close surroundings of the sensing surface. The presence of a metallic object (actuator) in the operating area
  • Measurement and Control Basics, Fourth Edition
    , microwave, and. radar. The chapter on temperature measurement has been improved by. adding new illustrations and a section on radiation pyrometers. Coverage. of analytical measurement and control in Chapter 8 was increased by the. addition of a section on the principles of electromagnetic radiation and its
  • Microvalve Technology - Small Component Handling and Assembly
    Anyone who wants to handle or assemble small, light parts can really get a move on with electromagnetic microvalves. These energy-efficient valves are screwed directly onto the pneumatic actuator and thus eliminate the need for long wires. They make the tempo significantly faster and thus save
  • Microwaves for cylinder sensing
    Position sensor works with actuators of any length. A sensor housed in the cylinder endcap measures piston position with accuracy to about 0.1 mm. A simple antenna inside the cylinder transmits electromagnetic waves and receives the reflected signal. Onboard electronics generates position and speed
  • Micro moves
    fixed optics. So the industry is now racing to improve image quality through use of motorized auto focus and optical zoom. The task of motorizing a phone-camera lens is nontrivial. Ordinary electromagnetic motors are just too big for a cell phone and suck up too much power. That's why designs now
  • May the force loop be with you
    assembly containing electromagnetic coils. Stator length and diameter sets the force level. Overall, the motors simplify the application of tightly controlled force and offer greater mechanical simplicity then the alternatives. Traditional hydraulic and pneumatic thrusters often use open-loop force

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