A simple testing device is presented that simultaneously calibrates all dominant error sources for accelerometers and gyroscopes found in typical microelectromechanical inertial measurement units on smart projectiles, including bias, scale factor, cross axis sensitivity/misalignment, and misposition. The device consists of a table which rotates about a gimbal joint and is supported on the corners by elastic and damping elements. Using dynamic simulation it is shown that motion created by free vibration of the testing platform suitably excites sensors on projectiles so calibration can be performed. Calibration parameters are estimated using an extended Kalman filter. Platform support stiffness and damping characteristics significantly alter the time required to identify calibration parameters by shaping platform motion. A critical level of initial motion of the testing platform is required for adequate prediction of calibration parameters.
Production Line Calibration for Sensors on Actively Controlled Bullets
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received May 2002; Revised December 2003. Associate Editor: K. Danai.
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Erickson, M., and Costello, M. (July 8, 2004). "Production Line Calibration for Sensors on Actively Controlled Bullets ." ASME. J. Manuf. Sci. Eng. May 2004; 126(2): 368–376. https://doi.org/10.1115/1.1688376
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