RVDT position sensors

Provide rotary position feedback for control and monitoring of airborne servo-controlled systems.

Robust and reliable position measurement for your application

Our angular position sensors are either designed as line replaceable units (LRUs) or may be fitted inside servo-control actuators. They provide differential electrical outputs giving an image of the sensed angle.

We can also design the electrical modules for powering the sensor and processing the signal to a DC output.

*RVDT = Rotary Variable Differential Transformer

Features and benefits of inductive angular position sensors

  • Trust your output

The sensor’s signal integrity, including its connection wiring, is easily detected by checking the sum of output voltages

  • Accurate positioning and targeting 

Accuracy from ±1% Full Scale for a standard RVDT sensor

  • Easy installation and maintenance

Sensors can be provided with manual/automatic locking and unlocking features

  • Customised optional design features

Electrical and also mechanical redundancy (up to 4 channels). Gearheads for multi-turn movements (e.g. cowl or flaps/slats actuation shafts)

 Proven reliability for aerospace and defence

Our engineers design each unit to be perfectly tuned for each application

How to sense the aircraft movement

Here are the different mechanisms that we can use to sense the angular position:

  • Simple plain input shaft
  • Mechanical bellows and dual path drive (to sense parts subject to out-shaping under high loads, while providing drive redundancy, e.g. thrust reverser doors shafts)
  • Custom input levers (e.g. for flight controls surfaces)
  • Input gear on shafts
  • Input gear on a moving arm to compensate radial movement of the sensed part (e.g.for nose landing gear steering angle sensing)

 

Applications

Our inductive position sensors are mainly used for aerospace and defence applications:

  • Cockpit controls (throttle, flaps and slats, brake pedals…)
  • Engine controls (nozzle, thrust reverser doors…)
  • Flight controls (position)

At Meggitt, we can provide you with RVDT inductive angular position sensors that are specifically designed for your application. To discuss what you need in more detail, please contact us.

 

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