| Abstract |
There was a demand for a linear drive with the following performance data:
way of motion less 20 mm, time of motion less 20 ms, maximum accelleration 4 000 m/s², maximum
thrust 42 000 Newton.
It was the task to design the electromagnetic actuator and the control electronics as well. The first one
has a moving coil with extremely low weight. It is in an cylindrical air gap in which there is a flux-
density of 1 Tesla. This field is made by two rings of high- energy permanent magnets. Since the
power demand is about 450 kW the power- supply comes from 5 capacitor- banks working in
parallel. The current rise rate is 2 000 A / ms. |
