IEEE 528:2001 pdf free.IEEE Standard for Inertial Sensor Terminology.
2.13 angular-case-motion sensitivity (dynamically tuned gyro): The drift rate resulting from anoscillatory angular input about an axis normal to the spin axis at twice the rotor spin frequency. Thiseffect is due to the single-degree-of-freedom of the gimbal relative to the support shaft and isproportional to the input amplitude and phase relative to the flexure axes. See : two-N (2N) angularsensitivity.
2.14 angular velocity sensitivity (accelerometer):The change of output (divided by the scale factorand the square of angular rate or product of two angular rates) of a linear accelerometer that isproduced per unit of angular velocity squared，when spun about a specified axis,excluding theresponse that is due to acceleration.See: effective center-of-mass for angular velocity; rate-squaredsensitivity.
2.15 angular vibration sensitivity (gyro): The ratio of the change in output due to angular vibrationabout a sensor axis to the amplitude of the angular vibration causing it.
2.16 anisoelasticity (mechanical gyro): The inequality of compliance of a structure in differentdirections. See: acceleration-squared-sensitive drift rate; principal axis of compliance.
2.17 anisoinertia: (1)(accelerometer). A relationship among the principal axis moments of inertiaof an accelerometer pendulum in which the moment of inertia about the output axis differs fromthe difference of the moments of inertia about the other two principal axes. This inequality causesthe effective centers of mass for angular velocity and for angular acceleration to be physicallyseparated. In a system in which the accelerometer is modeled as though it were located at theeffective center of mass for angular acceleration，there will be an offset in accelerometer outputproportional to the product of the angular rates about the input and pendulous axes.Anisoinertiamay be expressed as the magnitude of the actual separation in units of length, or as a compensationterm in units of ug/(rad/s)”.Anisoinertia，in this usage, differs from standard physical definitions,but it describes a real effect that is closely analogous to the effect of the same name in gyros. Theeffect is most easily described in a pendulous accelerometer， but it can also be seen in anominally translational proof mass accelerometer that has sufficient angular elastic compliance toemulate a pendulous axis.
(2)(mechanical gyro). The inequality of the moments of inertia about the gimbal principal axes. Whenthe gyro is subjected to angular rates about the input and spin axes, and the moments of inertia aboutthese axes are unequal, a torque is developed about the output axis that is proportional to thedifference of the inertias about the input and spin axes multiplied by the product of the rates aboutthese two axes.IEEE 528 pdf download.