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  • Brushless dc Motors in Medical Applications
    Just What the Doctor Ordered: Brushless-dc Motors Brushless-dc motors are taking center stage in medical-equipment design because they last twice as long a competing technologies. * Sensorless brushless-dc-drives have evolved to a point where they have wide appeal within the medical-design
  • AC and DC Variable Speed Drives: Application Solutions
    Knowing what controller/motor package to use in a given situation is just one of the subjects covered in this overview of AC and DC drive application considerations. Published originally as a direct mail piece for distribution use, it has been updated with additional information on drive selection
  • Snake-oil specs spell trouble for motor sizing
    accurate values for electrical and mechanical time constants, peak power, peak torque, and motor constants. This Servostar drive, for example, controls brushless motors, direct-drive motors, and servomotors using parameters derived from tests routinely performed to set up drives for robust motion
  • Motors and Drives: A Practical Technology Guide
    products: brush DC servo drives, DC drives, SCR DC drives, stepper drives / motors, AC servo drives, and brushless DC servo drives. Though in smaller percentage of use, encoderless flux vector, closed loop vector, and direct torque control type drives are gaining in popularity. It is hoped that this book
  • Eliminating sensors from closed-loopcontrol
    Direct torque control regulates motor speed and torque without encoders or tachometers. Encoderless motor control proved to be a maintenance dream at a Georgia Pacific Gypsum Paper mill. Despite the harsh operating conditions, drives have operated for several years with no unscheduled downtime
  • Medical Device Link .
    , and position-loop bandwidths required to direct drive linear motion applications where smooth, low-speed performance and settling times are important. The controls use an IGBT power base for cool running and enhanced reliability. , P.O. Box 2400, Fort Smith, AR 72902. Custom induction motors are suitable
  • Torque motors do the trick
    Direct-drive technology seems to be an ideal way to increase productivity, accuracy, and dynamic performance. It can also lower costs, simplify designs, and reduce wear. Torque motors are frameless kit motors consisting of a permanent-magnet rotor and laminated stator. A bridge keeps the rotor
  • MicroPositioning Fundamentals
    options: stepper motors, DC motors, brushless motors, ActiveDriveTM and IntelliStageTM options * Manually and motor-driven rotation and tilt stages. Resolution <0.001 degrees, velocity up to 90 degrees/sec. Optional piezo drives with sub arc-second resolution. * 6-degree-of-freedom Hexapod positioning

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