Position feedback in torque motors
Position feedback in torque motors

Magnetic encoder system components for direct mechanical integration

Magnetically encoded, absolute rotary angle measurement systems enable torque motors to perform highly-dynamic yet precise positioning tasks. The compact track reader and flat code disc with large inside diameter help ease integration challenges. Absolute rotary position feedback with magnetic encoders for servo applications unlocks rugged, affordable positioning accuracy in many applications.

High-resolution, low-hysteresis encoder systems reduce servo hunting at standstill, which reduces motor noise and hum and lowers winding temperatures. Lower winding temperatures mean higher energy efficiency and reduced stress on winding insulation, extending motor life expectancy.

Application examples

  • Direct rotational feedback for robot axes

    Encoder feedback directly at the rotating axis unlocks higher positioning precision

    The solution

    Absolute position feedback can be critical in robotic applications, where the robot arm position must be determined at all times, even after a loss of power. In torque motor implementations, the accuracy of the rotational encoder is often the key to the accuracy of the entire system.

    In many servo-robotic applications, rotary position feedback from an encoder at the motor provides sufficient positioning accuracy at the robot arm, but when applications demand higher precision, primary or secondary feedback in the form of an axis-mounted magnetic rotary encoder from Balluff could be the answer. Balluff can supply a variety of magnetic encoder rings and disks of various shapes and sizes, in incremental and absolute variations.

    The features

    • Variety of standard designs for direct integration
    • Customized solutions for application-specific requirements
    • Low hysteresis reduces servo hunting, servo noise, and temperature rise…contributing to higher energy efficiency
    • Absolute position signal: no home run required
    Position feedback of dynamic rotation and swivel movements for industrial robots
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  • Exact positioning of a tool pivoting system

    High-accuracy position with direct axis feedback

    The solution

    Balluff's magnetically-coded angle measurement system integrated into the direct-drive torque motor makes it possible to precisely position the tool pivoting system. Electrical power, coolant lines, and data cables can pass through the large hollow shaft inside the encoder ring, where they are better protected and subjected to reduced stress from rotational twisting.

    The features

    • Compact sensor head fits into small recess
    • Ideal for hollow shafts applications thanks to large inside diameter
    • Simple installation and high encoder confidence thanks to generous gap tolerance between sensor and ring
    Positioning the tool pivoting system in the torque motor
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    Contact us

    Have any questions? Please give us a call or send us an email. We look forward to hearing from you.