RVDT

Kearfott’s Rotary Variable Differential Transformer (RVDT) position sensors use cutting-edge winding, drivetrain and structural materials. They have a long history of in-field success and are commonly used in cockpit controls, flap positioning units, and reservoir transducers. Geared, direct-drive and custom solutions are available.Tandem in-line and clustered options are available for redundant applications. Geared options with anti-backlash designs are available to extend the measurement range of the devices.

Proven Technologies

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  • Brushless PM DC
  • Induction
  • Synchronous and Stepper
  • Single and multi-speed resolvers
  • RVDT and LVDT
  • Power stage
  • Loop closure
  • Advanced control algorithms
  • Serial, ARINC, CAN
  • Anti-Backlash
  • Spur Power train
  • Differential and Planetary
  • Epicyclic / power hinge

Geared

Geared RVDT sensors extend the measurement range of sensors. They are commonly used for applications with multiple revolutions or higher, angular displacements.

Typically, customers use geared RVDT sensors as part of flight control actuators, stand-alone airframes, fly-by-wire systems, brake-by-wire systems and environmental control systems.

Kearfott can customize the gear head to produce thousands of revolutions.

  • Wide mounting surface compatibility
  • Built by highly-skilled and continuously certified operators working towards the highest standards of quality
  • Accuracies typically 1% full-scale, 0.5% about null of the RVDT element
  • High accuracy in extreme environments
  • Precision in-house gear manufacturing to AGMA standards for extended strokes
  • Tailored approach provided necessary features within price point

Direct Drive

Direct drive sensors are standard, direct-coupling RVDT sensors with a set stroke setting.

  • Wide mounting interface compatibility
  • Built by highly-skilled and continuously certified operators working towards the highest standards of quality
  • Accuracies typically 1% full-scale, 0.5% about null
  • Hermetic and Environmentally Sealed Units
  • High accuracy
  • High reliability
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