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  • Introduction to Hydraulic Orbital Motors Offered by Impro Fluidtek
    Impro Fluidtek traces its roots back to White Drive Products, founded in the USA over 40 years ago, and is a leader in these motors. You'll find them used in agriculture, forestry, construction, mining and manufacturing operations. They're even used in casting processes like those carried out
  • Sensorless BLDC Control with Back-EMF Filtering Using a Majority Function
    -to-Digital Converter (ADC) It is possible to determine when to commutate the * Reconstructing the Motor Virtual Neutral Point motor drive voltages by sensing the back-EMF voltage * Comparing the trapezoidal BEMF signals to the on an undriven motor terminal during one of the drive reconstructed motor
  • Varco Oil Rig Top Drive System
    The brake is used to hold back torque in the drill string to avoid motor stall and to assist with positioning the drill bit when directional drilling. Dellner Brakes model SKD 50 hydraulic pressure applied brakes have been successfully used in this application.

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