Cutting-Edge Actuator Position Sensor

What is Phase Index?

Phase Index is Ultra Motion’s innovative new position sensor technology for electromechanical actuators. The Phase Index position sensor is a digital, high-speed, high-resolution, non-contacting actuator position sensor that works over a wide temperature range and is resistant to vibration, shock, particulate debris, and condensing moisture. The sensor is self-calibrating, and does not need backup power to retain absolute position when power is off. The absolute position of an actuator is available immediately upon power-up and with full accuracy. No power-up homing routine is needed to establish an accurate absolute position.

How Does it work?

The Phase Index position sensor works by using the phase relationship between two cyclic signals with different periods to determine absolute position within a larger interference cycle of the combined signals. When implemented with state-of-the-art magnetic sensor technology, this technique allows for a high-speed, high-resolution, digital actuator position sensor that is always accurate and that works across a range of harsh environmental conditions.

How is it used?

The first commercial implementation of Ultra Motion’s Phase Index position sensor technology, used in a demanding aerospace application, has performed flawlessly through extensive and rigorous environmental testing and field operations. Ultra Motion is now adapting this proven sensor technology to a range of designs from high-performance, high-power-density aircraft actuators, to low-cost industrial motion control. Phase Index actuator position sensing technology is available exclusively from Ultra Motion, so contact our engineers to find out how it can work for your application.