Accelerometer on a rotating wheel- Net force calculation

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SUMMARY

The discussion centers on the placement of two analog MEMS accelerometers, ADXL337 and ADXL377, on a car wheel to measure acceleration effectively. The ADXL337 measures up to +/- 3g, while the ADXL377 measures up to +/- 200g. Given a maximum car speed of 140 KMPH and a wheel radius of 30 cm, the net force at the wheel's center is zero, necessitating careful placement of the sensors along the wheel's radius to accurately capture centrifugal force during rotation. The challenge lies in determining the optimal positioning of the sensors to avoid noise and random data.

PREREQUISITES
  • Understanding of MEMS accelerometers, specifically ADXL337 and ADXL377
  • Knowledge of centrifugal force and centripetal acceleration
  • Familiarity with basic physics concepts related to rotational motion
  • Ability to perform calculations involving speed, radius, and force
NEXT STEPS
  • Research the specifications and limitations of ADXL337 and ADXL377 accelerometers
  • Learn about the equations governing centripetal acceleration and centrifugal force
  • Explore methods for minimizing noise in accelerometer data
  • Investigate optimal sensor placement strategies for rotational systems
USEFUL FOR

Engineers, physics students, and automotive developers interested in sensor integration and performance measurement in rotating systems.

bsnayak
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Homework Statement



I have two analog MEMS accelerometers ADXL337, ADXL377. The ADXL337 can measure acceleration upto +/- 3g (where g = gravitational acceleration) and ADXL377 can measure upto acceleration of +/- 200g. More than this much amount of acceleration, would create noise and random datas. I have to put them on the wheels of a car. The maximum speed at which the car can move 140 KMPH. Thewheel of radius 30 cm. At the centre of the wheel net force is zero. if we have to put both the sensors along its radius, what is the maximum position for placing both the sensors along its radius?

The centrifugal force during rotational motion has to be considered.

Homework Equations

The Attempt at a Solution


I couldn't figure out a method for solving this problem.
 
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No equations at all? Presumably you have studied centripetal acceleration?
 

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