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Bestech unveils new position sensing solutions for aerospace and military applications

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article image Macro Sensors’ HSTAR 750 linear position sensor
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Bestech Australia presents a new range of high temperature, rugged LVDT linear position sensors from Macro Sensors.

Macro Sensors’ HSTA/HSTAR series of LVDT linear position sensors is designed for use in various military and defence applications such as fuel/ oil level monitoring, load levelling of artillery platforms, controlling flight surfaces of airplanes, and rudder positions of aircraft carriers, tankers, ships and submarines. 

The HSTA/HSTAR 750 series manufactured by Macro Sensor features a fully stainless steel construction, with the sensors hermetically sealed and built to withstand harsh environments and temperature spikes common in military aircraft and equipment.

As position feedback components for closed-loop servo systems, these LVDT linear position sensors can serve as single or multiple channel devices, depending on redundancy and reliability requirements. Ranging from ±1.25 mm to ±250 mm, HSTA/HSTAR 750 Series linear position sensors feature high resolution, excellent repeatability, and high sensitivity consistent with good linearity. 

The maximum linearity error for any of these sensors is ±0.25% of full range output using a statistically best-fit straight line derived by the least squares method. With the advent of ratio-metric LVDTs and digital signal processing techniques, the position sensor has greatly improved in temperature stability and accuracy, ensuring greater precision in fuel monitoring and positioning of aircraft. 

The HSTAR 750 Series LVDTs from Bestech Australia can also be used with land vehicles such as tanks and trucks, serving as feedback devices on active suspensions for load and/or artillery platform levelling. A combination of these position sensing solutions with hydraulic actuators ensures a firing platform can be precisely levelled quickly, even while in motion. 

By combining the high temperature resistant linear position sensor with hydraulics and a suitable gyro system to measure roll and yaw, tank cannons can ‘shoot on the run’ versus ‘stop and then shoot’, reducing critical reaction time. Synchronised firing provides troops a tremendous edge.

In addition to defence applications, HSTAR LVDT position sensors are also used to monitor moving surfaces such as the skew of flaps of a Boeing 777, the exhaust nozzle of an F-14 or the hydraulic reservoir of an F-22. The LVDTs are also used to monitor the position of the thrust reverser vanes of the 787.

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