- #X Y Z SYNCHRO RESOLVER THEORY GENERATOR#
- #X Y Z SYNCHRO RESOLVER THEORY MOD#
- #X Y Z SYNCHRO RESOLVER THEORY UPDATE#
Inside the FDAI, three synchro receivers output the null error from their rotor, which feeds into a servo amplifier that drives a servo paired to each synchro receiver to zero out the error. When the synchro transmitter transformer sends the 400 Hz ac sine wave over the three wires, it represents the angular magnetic alignment of the rotor. Each of the three axes have three inputs that come from the synchros on the gyro gimbals. These devices take a reference 115 volt ac, 400 Hz signal for both power and as the reference. 3 axis models are more frequently used in fighter jets, stunt planes, and space craft. A lot of flight sims only use a 2 axis model. That's actually where mine came from, in fact. I know that these are very commonly installed in flight simulators. I have a nice big pile of meters, switches, and other goodies, but the FDAI is my prize collection piece! Almost no one has done a physical "navball" in Kerbal Space Program.
#X Y Z SYNCHRO RESOLVER THEORY MOD#
#X Y Z SYNCHRO RESOLVER THEORY UPDATE#
The microcontroller only needs to update the attenuation values of the DAC, and the sine wave is attenuated entirely by the hardware.
#X Y Z SYNCHRO RESOLVER THEORY GENERATOR#
) To reiterate, because it gets missed, a lot, the design I've chosen uses a hardware sine wave generator (California Instruments 850T Precision Oscillator) to generate the 400 Hz sine wave, uses a set of analog switch chips to select whether to use an inverted or a non-inverted sine wave, and feeds that into the voltage reference of a multiplying DAC.