Electric wave
An electrical shaft is understood to be the simulation of the function of a mechanical shaft with the help of electrical machines . The mechanical connection is replaced by a suitable wiring of the machines or by a control . The aim is to transfer rotational movements and torques at the correct angle without a mechanical coupling.
Circuit implementation
As a special form of an electrical machine , it consists of two or more motors that are connected like three-phase motors . However, in this case only the stator winding is fed with single-phase alternating current . If you turn the rotor of the encoder, the rotors of the other units also turn until the same angle is reached.
There is also a direct current version of the electric shaft, in which the rotor is fed instead of the stator.
Control implementation
The transmission can also be realized by a control with incremental encoders or by means of resolvers .
Applications
- Synchronization of asynchronous machines
- Wind direction indicator
- Radars
- Adjustment and direction display for rotatable antennas
- Rowing machine on ships
Individual evidence
- ↑ Electric shaft with control electronics ( Memento of the original dated December 6, 2006 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 221 kB) at atrie.de
- ↑ Wind direction indicator on lambrecht.net
