{"id":10620,"date":"2026-05-04T10:32:04","date_gmt":"2026-05-04T10:32:04","guid":{"rendered":"https:\/\/www.lcm.at\/?p=10620"},"modified":"2026-05-04T11:46:08","modified_gmt":"2026-05-04T11:46:08","slug":"magnetic-brake-ii","status":"publish","type":"post","link":"https:\/\/www.lcm.at\/en\/magnetic-brake-ii\/","title":{"rendered":"Magnetic Brake II"},"content":{"rendered":"\n
\n
<\/div>\n\n\n\n

Magnetic Brake II<\/mark><\/h2>\n\n\n\n
<\/div>\n\n\n\n
\n
\n
\"Post<\/figure>\n<\/div>\n\n\n\n
\n

Mankind’s activities in space are constantly increasing. Modern satellites and other spacecraft are equipped with a large number of rotary actuators. Conventional friction-based brakes or brakes with mechanical locking cannot be used to block rotational movements, e.g. when fixing antennas or solar panels in their orientation, due to the risk of cold welding or abrasion. The conventional approach uses stepper motors that have an inherent cogging torque due to magnetic reluctance. However, the size of the stepper motor is sometimes determined not by the required rated torque, but by the required braking torque. This makes these actuators unnecessarily large and heavy. <\/p>\n<\/div>\n<\/div>\n<\/div><\/section>\n\n

\n
<\/div>\n\n\n\n
\n
\n

The MagneticBrake II project has developed a new concept for a magnetic brake that can be switched on and off with a simple current pulse. The special thing about it is that no energy is consumed in any of the stable states – neither in the locked nor in the unlocked state. The functional principle is simple: a permanent magnet generates a magnetic flux that creates a stable latching position through the teeth. This ensures energy-free holding. A special design of the permanent magnet makes it possible to switch the magnetic flux on and off by means of a short current pulse in a coil. If there is no magnetic flux, the rotor can be adjusted without resistance. A second current pulse then switches the magnetic flux of the permanent magnet back on and the brake is locked again. <\/p>\n<\/div>\n\n\n\n

\n
\"magnetic\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button>
Operating principle: Magnetic break <\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n
<\/div>\n<\/div><\/section>\n\n
<\/div>\n
\n\t\t
\n
\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\t\t\tRequirements<\/mark>\t\t\t\t\t\t\t<\/h2>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t