Publisher: Science and Education Publishing   (Total: 75 journals)   [Sort by number of followers]

Showing 1 - 75 of 75 Journals sorted alphabetically
American J. of Applied Mathematics and Statistics     Open Access   (Followers: 15)
American J. of Applied Psychology     Open Access   (Followers: 55)
American J. of Biomedical Research     Open Access   (Followers: 2)
American J. of Cancer Prevention     Open Access   (Followers: 12)
American J. of Civil Engineering and Architecture     Open Access   (Followers: 43)
American J. of Clinical Medicine Research     Open Access   (Followers: 8)
American J. of Educational Research     Open Access   (Followers: 70)
American J. of Electrical and Electronic Engineering     Open Access   (Followers: 28)
American J. of Energy Research     Open Access   (Followers: 11)
American J. of Environmental Protection     Open Access   (Followers: 9)
American J. of Epidemiology and Infectious Disease     Open Access   (Followers: 21)
American J. of Food and Nutrition     Open Access   (Followers: 58)
American J. of Food Science and Technology     Open Access   (Followers: 12)
American J. of Infectious Diseases and Microbiology     Open Access   (Followers: 31)
American J. of Information Systems     Open Access   (Followers: 7)
American J. of Materials Engineering and Technology     Open Access   (Followers: 5)
American J. of Materials Science and Engineering     Open Access   (Followers: 8)
American J. of Mathematical Analysis     Open Access   (Followers: 2)
American J. of Mechanical Engineering     Open Access   (Followers: 58)
American J. of Medical and Biological Research     Open Access   (Followers: 10)
American J. of Medical Case Reports     Open Access   (Followers: 3)
American J. of Medical Sciences and Medicine     Open Access   (Followers: 5)
American J. of Medicine Studies     Open Access   (Followers: 3)
American J. of Microbiological Research     Open Access   (Followers: 3)
American J. of Modeling and Optimization     Open Access   (Followers: 2)
American J. of Nanomaterials     Open Access   (Followers: 7)
American J. of Numerical Analysis     Open Access   (Followers: 3)
American J. of Nursing Research     Open Access   (Followers: 6)
American J. of Pharmacological Sciences     Open Access   (Followers: 2)
American J. of Public Health Research     Open Access   (Followers: 27)
American J. of Rural Development     Open Access   (Followers: 7)
American J. of Sensor Technology     Open Access   (Followers: 4)
American J. of Sports Science and Medicine     Open Access   (Followers: 38)
American J. of Water Resources     Open Access   (Followers: 13)
American J. of Zoological Research     Open Access   (Followers: 2)
Applied Ecology and Environmental Sciences     Open Access   (Followers: 25)
Applied Mathematics and Physics     Open Access   (Followers: 3)
Automatic Control and Information Sciences     Open Access   (Followers: 3)
Biomedical Science and Engineering     Open Access   (Followers: 7)
Chemical Engineering and Science     Open Access   (Followers: 47)
Intl. J. of Celiac Disease     Open Access   (Followers: 3)
Intl. J. of Dental Sciences and Research     Open Access   (Followers: 1)
Intl. J. of Econometrics and Financial Management     Open Access   (Followers: 7)
Intl. J. of Physics     Open Access   (Followers: 12)
Intl. Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
J. of Automation and Control     Open Access   (Followers: 8)
J. of Biomedical Engineering and Technology     Open Access   (Followers: 1)
J. of Business and Management Sciences     Open Access   (Followers: 1)
J. of Cancer Research and Treatment     Open Access   (Followers: 4)
J. of Computer Networks     Open Access   (Followers: 8)
J. of Computer Sciences and Applications     Open Access  
J. of Environment Pollution and Human Health     Open Access   (Followers: 7)
J. of Finance and Accounting     Open Access   (Followers: 9)
J. of Finance and Economics     Open Access   (Followers: 13)
J. of Food and Nutrition Research     Open Access   (Followers: 11)
J. of Food Security     Open Access   (Followers: 6)
J. of Geosciences and Geomatics     Open Access   (Followers: 2)
J. of Materials Physics and Chemistry     Open Access   (Followers: 5)
J. of Mathematical Sciences and Applications     Open Access   (Followers: 2)
J. of Optoelectronics Engineering     Open Access   (Followers: 4)
J. of Physical Activity Research     Open Access   (Followers: 4)
J. of Polymer and Biopolymer Physics Chemistry     Open Access   (Followers: 9)
Materials Science and Metallurgy Engineering     Open Access   (Followers: 6)
Nanoscience and Nanotechnology Research     Open Access   (Followers: 20)
Physics and Materials Chemistry     Open Access   (Followers: 2)
Research in Plant Sciences     Open Access   (Followers: 1)
Research in Psychology and Behavioral Sciences     Open Access   (Followers: 3)
Sustainable Energy     Open Access   (Followers: 3)
Turkish J. of Analysis and Number Theory     Open Access   (Followers: 1)
Wireless and Mobile Technologies     Open Access   (Followers: 6)
World J. of Agricultural Research     Open Access   (Followers: 2)
World J. of Analytical Chemistry     Open Access   (Followers: 4)
World J. of Chemical Education     Open Access   (Followers: 6)
World J. of Environmental Engineering     Open Access   (Followers: 3)
World J. of Organic Chemistry     Open Access   (Followers: 7)
Similar Journals
Journal Cover
American Journal of Sensor Technology
Number of Followers: 4  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2373-3454 - ISSN (Online) 2373-3462
Published by Science and Education Publishing Homepage  [75 journals]
  • Angular Position Estimation of an Inverted Pendulum Using Low-Cost IMUs

    • Authors: Daisuke Aoyagi; Sukgi Choi
      Pages: 1 - 6
      Abstract: Seeking an affordable solution to measure a bicycle’s roll angle, we came across an Inertial Measurement Unit (IMU) BNO055 by Bosch, which contains 3-axis accelerometer, gyroscope, and magnetometer, and is advertised to produce “absolute orientation” by a built-in proprietary “Fusion” algorithm. We found another low-cost IMU, an MPU-9250 from InvenSense, which could also calculate absolute orientation via embedded Fusion software. Being unable to find information about dynamic characteristics of these IMUs in their datasheets, we sought to evaluate them under dynamic conditions, specifically in the estimation of roll angle. We constructed an inverted pendulum as a model of a bicycle, mounted both IMUs on it, and attached a potentiometer to measure actual angular position for reference. Additionally, as an alternative to the proprietary Fusion algorithms, we devised and implemented an Extended Kalman Filter, which, we hypothesized, would perform better than the proprietary Fusion algorithms, because our algorithm incorporated the kinematics of the inverted pendulum while the Fusion algorithm of the IMUs did not. In a series of experiments, we observed a significant time lag, about 0.05-0.1 second, in BNO055’s raw acceleration and gyro signals. The BNO055’s Fusion responded with similar lag and an offset of 0.5-3°; we also noticed rather unpredictable fluctuation in the output signals, possibly due to its “automatic calibration” feature, which cannot be disabled. The MPU-9250 exhibited better performance than the BNO055 in terms of raw acceleration signals and, particularly, gyro signals. The MPU-9250’s Fusion performed somewhat better than BNO055’s, typically showing lag of 0.03-0.06 sec and static offset of 0.5-1°. Our implementation of Kalman Filter based on MPU-9250 raw signal performed better than either Fusion algorithm, with about 0.02-0.03 second lag and 0.5-1° offset, supporting our hypothesis. Our next step is to experiment on an actual bicycle in motion.
      PubDate: 2018-09-09
      DOI: 10.12691/ajst-5-1-1
      Issue No: Vol. 5, No. 1 (2018)
       
  • Single-chip Implementation of LVDT Signal Conditioning

    • Authors: Lars E. Bengtsson
      Pages: 7 - 16
      Abstract: The aim of this work was to prove that the signal conditioning electronics for linear variable transformers (LVDTs) can be implemented in inexpensive, general-purpose 8-bit microcontrollers, making expensive dedicated signal conditioning chips redundant. A low-cost, high-resolution signal conditioning solution for LVDTs is presented. Apart from a few external passive components, the entire solution is implemented in a low-cost, analog-digital hybrid microcontroller. The excitation sinusoid is generated by filtering out the fundamental frequency of a (self-sustained) pwm-generated square wave and the secondary coils’ signals are demodulated with classic peak detector circuits implemented in the microcontroller using a combination of its embedded analog and digital building blocks. A resolution of 1 μm over a range of ±6.35 mm for a commercial LVDT is reported and an uncertainty of 6 μm in the absolute value is deduced. The entire solution is implemented as surface mounted components on a small printed circuit board and the LVDT core displacement is displayed on an LCD display. Due to the simplicity and low-cost components required, this signal conditioning proposal has the potential to have a significant impact on commercial LVDT signal conditioning chips in the future since it is significantly less expensive than the present state-of-the-art signal conditioning chips offered by the main commercial suppliers and other solutions previously suggested in scientific literature.
      PubDate: 2018-12-14
      DOI: 10.12691/ajst-5-1-2
      Issue No: Vol. 5, No. 1 (2018)
       
 
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