IO 
CARLO TROMBETTI 
Dalla cremagliera degli assi X(oYJ 
del restitutore 
* I 
Al movimento X (oY) del 
tavolo 
! 
I 
Complesso trasmettitore 
Complesso ricevitore 
Complesso 
Servo -amplificatore 
Fig. 7 - Diagram of the electronic synchro-system with motor tachymeter 
Schema deH’asservimento elettronico a trasmissione sincronica con mototachimetro 
is the disturbance, as this signal is after all proportionate to the derivate with regard 
to time of the rotor rotation angle : this signal creates a high return torque, 
so as to ensure keeping the coincidence position in the most unfavourable ope 
ration condition. 
3. Double speed synchro-transmission. 
What we have described so far always guarantees the univocal correspondence 
between the rotation of the synchro-transmitter rotor and the rotation of the 
synchro-receiver rotor, if the maximum rotation of the synchro-transmitter rotor