Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY
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Chapter 12, Problem 12.15P
Consider a moving coil transducer having a coil diameter Dcof 0.8 cm and a coil length of 2 cm. The nominal range of velocities to be measured is 1-10 cm/s. The resulting voltage is measured by a PC-based data acquisition system with an 8-bit A/D converter and a range of -1 to 1 V. The accuracy is 0.1% full-scale. Plot the number of turns as a function of magnetic field strength to provide an accuracy of 1% in the resulting velocity measurement.
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2. Figure 1 shows a sensor consists of a core, an armature and a variable air gap. The core with
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H.m, calculate the inductance of the sensor for air gaps of 0 mm and 2 mm. Please write the
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2.0 cm
1.0 cm
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Figure I
Problem 4-1: During a step function calibration, a first-order instrument
is exposed to a step change of 100 units. If after 1.2 s the instrument
indicates 80 units, estimate the instrument time constant. Estimate the
error in the indicated value after 1.5 s. For this instrument, y (0) = 0
units; K = 1 unit/unit.
A seismic transducer with natural frequency 750 rad/s and
damping ratio 0.7 is used to measure acceleration. The input to
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and fundamental frequency 100 Hz. The resulting steady-state
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Chapter 12 Solutions
Theory and Design for Mechanical Measurements
Ch. 12 - Prob. 12.11PCh. 12 - Determine the bandwidth for a seismic instrument...Ch. 12 - In Example 12.2, integration is identified as a...Ch. 12 - Consider a moving coil transducer having a coil...Ch. 12 - Hydrophones are microphones designed to be used...Ch. 12 - Research the use of load cells in robotics, both...Ch. 12 - Prob. 12.22PCh. 12 - Prob. 12.25PCh. 12 - Prob. 12.26PCh. 12 - Prob. 12.27P
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