Position

Kearfott sensors are designed to perform a range of position and vehicle motion sensing in the harshest environments, and where crew and payload are of the utmost importance. Our Position Sensors are offered as both linear and rotary non-contact devices and can be delivered as frameless components or integrated into higher level assemblies. Options include multi-channel and geared offerings. Coupled with our Data Converters they provide a complete smart sensing solution.

Resolvers
LVDT
RVDT

Proven Technologies

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

Resolvers

Kearfott offers resolvers as absolute position sensors, used in servo applications as a commutation sensor or for output shaft sensing. The resolution of our resolvers is only limited by the measurement system to which the resolver is coupled. As transformer based devices, with no on-board electronics used to provide position feedback, they provide extremely high reliability. Our sensors are ideally suited for deployment in extreme temperature, radiation, shock and vibration environments.

  • Speeds available: 1x/ 2x/ 4x/ 8x/ 16x
  • Diameters range from 0.750″ to in excess of 12.000″
  • Geared options for extending absolute position measurement range
  • Tandem options exist for coupling 1x and other multi-speed units in a single device
  • Ease of mounting and installation
  • Designed to be low-power: <50mVA
  • High reliability
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LVDT

Kearfott supplies LVDTs (Linear Variable Differential Transformer) for a range of aerospace, military, and other high reliability/harsh environment applications. The resolution of our LVDTs is only limited by the measurement system to which the LVDT is coupled. Our LVDTs are used in control surface position applications, pilot controls, and on-engine feedback. Options are available to supply hermetically sealed units for use in fluid/hydraulic applications.

  • Wide mechanical compatibility with range of mounting configurations
  • Built by highly-skilled and continuously certified operators working towards the highest standards of quality
  • Accuracies typically 1% full-scale, 0.5% about null
  • Cluster configurations available for redundancy
  • Spring-centering and other mechanical options
  • Long life devices with low-to-no wear
  • High accuracy in extreme environments
  • Tailored approach to each application provides the right features at the right price
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RVDT

Kearfott supplies RVDTs (Rotary Variable Differential Transformer) for a range of aerospace, military, and other high reliability/harsh environment applications. The resolution of our RVDTs is only limited by the measurement system to which the RVDT is coupled. Our RVDTs are used in control surface position applications, pilot controls, and on-engine feedback. Options are available to supply hermetically sealed units for use in fluid/hydraulic applications. 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.

  • Wide compatibility with different mounting interfaces
  • Built by highly-skilled and continuously certified operations working towards the highest standards of quality
  • Accuracies typically 1% full scale, 0.5% about null of the RVDT enviornment
  • High accuracy in extreme environments
  • Precision in-house gear manufacturing to AGMA standards for extended strokes
  • Tailored approach to specific applications provide the needed features at the right price
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