SOC is used to integrate data acquisition and sensor signal sampling in one module, thus the signal acquisition is achieved on the rolling axis and the precision is rised.

If a gyro is used to measure the rate of rotation around the aircraft roll axis, it will measure a non-zero value as long as the aircraft is rolling, but measure zero if the roll stops.

From the rolling contact problem of two viscoelastic cylinders with parallel axis, a series of normal-tangent contact coupled integration equation is obtained.