Velocity_Measurement_Handout

Velocity_Measurement_Handout - Velocity Measurement...

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Velocity Measurement Velocity Measurement ME 3023 Measurements in Mechanical Systems Fall 2010 Dr. Gautam Chandekar Prepared on: October 24, 2009 ME 3023 Measurements in Mechanical Systems Fall 2010 Velocity Measurement
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Velocity Measurement Outlines Linear Velocity Measurement Linear Velocity Measurement 1 Velocity Determination Using Displacement and Acceleration Sensors 2 Linear Velocity Transducer (LVT) 3 Types of LVT’s 4 Principle of LVTs 5 Pros and Cons of LVTs 6 Doppler Radar Velocity Measurement Most of the material and figures are taken from Introduction to Engineering Experimentation, A.J. Wheeler and A. R. Ganji, 1996 unless and otherwise mentioned. ME 3023 Measurements in Mechanical Systems Fall 2010 Velocity Measurement
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Velocity Measurement Outlines Angular Velocity Measurement Angular Velocity Measurement 7 Angular Velocity Measurement 8 Electric Generator Tachometer 9 Magnetic Pickup Transducer 10 Stroboscopic Tachometer 11 Photoelectric Tachometer ME 3023 Measurements in Mechanical Systems Fall 2010 Velocity Measurement
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Velocity Measurement Part I Linear Velocity Measurement ME 3023 Measurements in Mechanical Systems Fall 2010 Velocity Measurement
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Velocity Measurement Velocity Determination Using Displacement and Acceleration Sensors Velocity Determination Using Displacement Sensors Data obtained from displacement sensors can be used to find velocity If displacement data is available in terms of x ( t ), the velocity can be obtained by differentiation: V = dx ( t ) dt This approach gives incorrect information when the displacement data has discontinuous first derivative, particularly if potentiometer sensors are used. This produces spikes in the velocity. ME 3023 Measurements in Mechanical Systems Fall 2010 Velocity Measurement
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Velocity Measurement Velocity Determination Using Displacement and Acceleration Sensors Velocity Determination Using Acceleration Sensors Data obtained from acceleration sensors can be used to find velocity If acceleration data is available in terms of a ( t ), the velocity can be obtained by integration: V ( t ) = V 0 + Z t t 0 a ( t ) dt , Where V 0 is the velocity at an initial time t 0 If the acceleration data is of high quality then this integration process to determine velocity should be quite reliable ME 3023 Measurements in Mechanical Systems Fall 2010 Velocity Measurement
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Velocity Measurement Linear Velocity Transducer (LVT) Linear Velocity Transducer (LVT) LVT is an inductive device
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This note was uploaded on 02/09/2011 for the course ME 3023 taught by Professor Chandekar during the Fall '10 term at TN Tech.

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Velocity_Measurement_Handout - Velocity Measurement...

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