PPT-Least Squares Accelerometer Calibration in Precision Measurement Equipment

Paige Thielen ME535 Spring 2018 Abstract Various methods of accelerometer calibration can be used to increase the precision of acceleration measurements The methods tested are two 12parameter linear least squares optimizations one using four calibration orientations one using eight orientations and two 15parameter least squares optimizations using eight and 19 calibration orientations Based on the data gathered while it is not necessary to change the calibration method currently in use good results could be obtained from applying a 12parameter 8orientation least squares calibration without significant increase in time required for calibration. By scattered data we mean an arbitrary set of points in which carry scalar quantities ie a scalar 64257eld in dimensional parameter space In contrast to the global nature of the leastsquares 64257t the weighted local ap proximation is computed eithe The ECU Measurement and Calibration Toolkit offers a lowcost alternative to the expensive turnkey measurement and calibration tools on the market It provides highlevel easytouse functions based on the Universal Measurement and Calibration Protocol X 1 02 03 04 05 06 07 08 09 1 Measured Value of x Fraction of Total Measurements SD 01 SD 02 SD 03 brPage 5br mean standard deviation histogram Figure 3 Mass of Unknown Sample 102 104 106 108 11 112 114 116 118 12 Mass kg of Measurements brPage 6br Chapter 1 Section 2. Accuracy. describes how close a measured value is to the true value of the quantity measured. . . a.k.a. “the right answer”, or the agreed upon answer (“consensus” among scientists). Single Unit (about $4). Which way’s up?. http://www.youtube.com/watch?v=KZVgKu6v808#t=246. Basis of the Technology. Another view. Biomedical. Automotive. Guidance/Navigation. Structural Health Monitoring. Chapter 1 Section 2. Accuracy. describes how close a measured value is to the true value of the quantity measured. . . a.k.a. “the right answer”, or the agreed upon answer (“consensus” among scientists). MMA8452Q. Wiring. Steps . opkg. install i2c-tools. . opkg. install i2c-tools-dev. . i2cdump 1 0x1d. . opkg. install i2c-tools-dev. i2cdetect -r 1 (before connecting device). 6. . i2cdetect -r 1 (after connecting device). Radon Symposium. San Diego, California. September 21, 2016. Phillip H. Jenkins, PhD, CHP. Bowser-. Morner. , Inc.. Melinda . Ronca. -Battista. Tribal Air Monitoring Support Center, NAU. We Take it For Granted. Accuracy vs. Precision. What is the difference?. Accuracy vs. Precision. Precision . accuracy. Exactness. Divisions on scale. Reproducibility. Uncertainty. Significant digits. Correctness. Calibration. 1. DIGIKEY DKSB1002A Evaluation Board. 3-axis accelerometer. Arduino Uno. microcontroller board. DISCLAIMER & USAGE. The content of this presentation is for informational purposes only and is intended for students attending Louisiana Tech University only. . Inertial Measurement Unit (IMU) Basics IMU (Inertial Measurement Unit) Accelerometer Gyroscope Magnetometer (Compass) Acceleration along 3 axes Rotation speed around 3 axes Direction of magnetic north Accuracy of a measurement:. An indication of how close the measurement is to the accepted value. Percentage difference can be calculated to give a quantitative indication of a measurement’s accuracy—the smaller the percentage difference, the greater the . Battery management systems. 1. Reference Designs / Collateral. Automotive High-Voltage and Isolation Leakage Measurements Ref. Design. Leakage Current Measurement Ref. Design for determining Insulation Resistance. Matthew Heintzelman. EECS 800 SAR Study Project . ‹#›. . Background:. Typical SAR image formation . algorithms. produce relatively high sidelobes (fast-time and slow-time) that . contribute. to image speckle and can mask scatterers with a low RCS..