highlights
• tip/tilt range of ±2º (optical)
• closed-loop bandwidth exceeding 1 kHz
• high-efficiency variable-reluctance actuators
• high-resolution, low-power, wide-range eddy-current sensors
• very low power consumption (< 0.2 W) at max. tip/tilt
high resolution, high dynamics.
The FSMs in the optical terminals of satellites, airplanes and ground stations provide for the accurate alignment of transmitter and receiver. Their mirror (20 millimetre in diameter) is extremely flat, to prevent wavefront distortion. For the development of a compact, space-compatible FSM, we applied our optomechatronics and manufacturing expertise in close collaboration within the Dutch FSO consortium. The FSM is capable of compensating high-frequency disturbances due to its highly dynamic response mechanism. It features a flexure-based design that enables high linearity and is maintenance-free.
high efficiency, low thermal distortion.
Thermal effects can induce stresses and deformations in the FSM construction. Therefore, we used high-efficiency variable-reluctance actuators, which have a higher force-to-volume and force-to-energy ratio than alternative actuator types. We applied high-resolution eddy-current sensors for accurate pointing precision. An efficient design for manufacturing purposes allows us to produce these FSMs in large numbers.
"we successfully industrialized the FSM design."
The FSM’s industrialization presented us with various challenges. We made smart material choices, optimized manufacturability and reduced costs considerably. In addition, we designed special versions of components such as an extremely efficient actuator. We put the FSMs through their paces using strict test protocols, to ensure that they survive a launch and deliver high performance. Our FSMs can be supplied in accordance with the European standards specifications.
more cases & tech insights.
Cracking the glass code
We have grown accustomed to metal and concrete printing. But glass? It not only has a very high melting point, it also becomes brittle after solidifying too quickly. Together with the German specialist in advanced solutions from high-performance materials QSIL we cracked the ‘glass code’.
Read more
Vibration isolation for nanometer measurement device
In this article, we present the model-based design steps for a high-performance vibration isolation system to support a metrology frame. During the design phase, several improvements were shown to increase the vibration isolation performance.
Read more
Measuring the nearly unmeasurable
Conventional spherical lenses suffer from spherical aberration. Therefore freeform – often aspherical – lenses have become popular in lithography, aerospace, astronomy and microscopy as well as in (smartphone) photography.
Read more
The other side of the coin
After shipment of forty million coins from the Netherlands to their destination country, it appeared that an estimated one percent of the coins showed missing chips and discoloration. An on-site sorting machine was urgently required and Demcon built it within four weeks.
Read more