An Automatic Gyro Mass-Unbalance Measuring Technique

An inertial navigation system containing a versatile computer can be given the capability of automatically measuring its gyro mass unbalance. These measurements are accomplished in tests performed and monitored by the computer. Mass-unbalanced drifts induced by tilting the stable platform are detected by the system's acceleration sensors. From the outputs of these sensors, the computer determines the mass-unbalance components using regression-analysis techniques that minimize errors of extraneous origin.