SENSR_WG - Sensors Working Group

Harry Davis

This recommended practice describes the conduct and analysis of precision tests that are to be performed on linear accelerometers using centrifuge techniques. The term ?precision,? in this context, refers to tests that are conducted to evaluate accelerometer parameters, as opposed to those conducted to establish environmental survivability only. Evaluation may take the form of determining the coefficients of the accelerometer?s model equation, except for bias and scale factor, which are most accurately determined by static multi-position tests. Alternatively, evaluation may only establish that the accelerometer output complies with specific error limit criteria.

Specification and test requirements for a single-axis Coriolis vibratory gyro (CVG) for use as a sensor in attitude control systems, angular displacement measuring systems, and angular rate measuring systems are defined. A stadard specification format guide for the preparation of a single-axis CVG is provided. A complilation of recommended procedures for testing a CVG, derived from those presently used in the industry, is also provided. Informative annexes cover CVG design features and theoretical principles of operation.

Corrigendum to IEEE Std 1293-1998. Specification and test requirements for linear, single-axis, nongyroscopic accelerometers for use as a sensor in attitude control systems, linear displacement measuring systems, and linear rate measuring systems are defined. The specification format guide and test procedure standard applies to force-rebalance accelerometers (pendulous or translational proof mass), vibrating beam accelerometers (VBAs), and micromechanical accelerometers that range from lesser accuracy to high accuracy devices.

IEEE Std 671-1985 provides specifications and test requirements for a non-gyroscopic inertial angular sensor that may measure angular jerk, acceleration, rate, or displacement with or without response down to zero frequency. A standard specification format is provided. A compilation of recommended test procedures, derived from those presently used in the industry, is also provided. Informative annexes cover design features and theoretical principles of operation. This corrigendum makes changes to 4.7.2.6 to delete a sentence that does not belong there, to add a subclause that was inadvertently left out, and to renumber the existing subclauses. Changes are also being made to fix the block diagrams in Annex A, to correct a misspelling of inertia, and to add a missing symbol.

The specification and test requirements for a linear, single-axis, nongyroscopic accelerometer for use in inertial navigation, guidance, and leveling systems are defined. A standard specification guide and a compilation of recommended test procedures for such accelerometers are provided. Informative annexes are given on the various types of such accelerometers (force or pendulous torque rebalance with analog or digital output, vibrating beam, and micromechanical) and error effects, on filtering, noise, and transient analysis techniques, and on calibration and modeling techniques (multipoint tumble analysis, vibration and shock test analyses, and geophysical effects in inertial instrument testing).

Correction to Table 1 on page 14 of IEEE Std 293-1969

Corrections are made by this corrigendum to material already published in IEEE Std 529-1980.

Terms and definitions relating to inertial sensors are presented in this standard. Usage as understood by the inertial sensor community is given preference over general technical usage of the terms herein. The criterion for inclusion of a term and its definition in this standard is usefulness as related to inertial sensor technology.

Specification and test procedures for a single-axis interferometric fiber optic gyro (IFOG) for use as a sensor in attitude control systems, angular displacement measuring systems, and angular rate measuring systems are defined. The test procedures are derived from those presently used in the industry.