An accelerometer includes an inertial platform maintaining an attitude in response
to a platform stabilizing controller signal and defining a spin axis and a reference
plane. An accelerometer, coupled to the inertial platform a distance from the spin
axis, defines a flex axis, which is perpendicular to the stability axis. The accelerometer
generates an accelerometer signal in response to acceleration of the accelerometer.
A second accelerometer defines a second flex axis also perpendicular to the stability
axis, and is also coupled to the inertial platform a distance from the spin axis.
The second accelerometer generates a second accelerometer signal in response to
acceleration of the second accelerometer. A controller, including an angular acceleration
signal generator, receives the first accelerometer signal and the second accelerometer
signal and generates an angular acceleration signal from a difference in amplitudes
between the first accelerometer signal and the second accelerometer signal. The
controller further generates the platform stabilizing controller signal in response
to the first acceleration signal and the second acceleration signal.
