lab 6 - MAE 3113 MEASUREMENTS AND INSTRUMENTATIONS SPRING...

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MAE 3113 MEASUREMENTS AND INSTRUMENTATIONS SPRING 2006 Lab 6 (One-week lab) Rotational Rate Measurements Introduction: The measurement of angular velocity is of major importance to a large number of fields, among them are; position (both linear and angular), speed control, power produced, and counting. Objective: The purpose of this lab is to learn how to use several different transducers in order to measure the angular velocity, or determine the distance traveled. In order to do this you will perform the following at four stations: 1. Photo-Resistor: A photo-resistor is a transducer that changes its resistance dependant on the amount of light that falls on it. Most have very high resistance when no light falls on them and the resistance decreases as more light falls on it. a. Measure the resistance of the photocell in room light and in darkness. b. Determine the frequency the strobe light at several different frequencies with both of the circuits discussed below. Connect the photocell as R1 in a voltage divider. Now, connect the photocell as R2. c. Utilizing a NOT gate (7404), signal condition one of the above arrangements. Hint: One of the two arrangements from above will be much easier to condition. In order to
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This note was uploaded on 09/14/2011 for the course MAE 3113 taught by Professor Staff during the Fall '11 term at Oklahoma State.

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lab 6 - MAE 3113 MEASUREMENTS AND INSTRUMENTATIONS SPRING...

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