(c) (b) Problem 5. A force sensor generates a change in resistance on its output. To measure this resistance change, the force sensor is placed in one arm of the deflection bridge with an input voltage of 9.5 V. With no force applied, the sensor's resistance is 260 2, and all resistances in the bridge's arms are equal. The static sensitivity of the sensor is 5.25 2/N. (a) Draw the schematic diagram of the deflection bridge: Calculate output voltage of the deflection bridge for applied forces of 55 N and 140 N: Answer: For 55 N: [V]; for 140 N: Determine the current flow through the sensor under the applied force 140 N: [M] 3
Theory and Design for Mechanical Measurements
Measurement is a term that refers to analyzing a manufactured component regarding the degree of accuracy for dimensions, tolerances, geometric profile, roundness, flatness, smoothness, etc. Measurement always involves comparing the manufactured component or the prototype with a standard specimen whose dimensions and other parameters are assumed to be perfect and do not undergo changes with respect to time.Precisely in mechanical engineering the branch that deals with the application of scientific principles for measurements is known as metrology. The domain of metrology in general deals with various measurements like mechanical, chemical, thermodynamic, physical, and biological measurements. In mechanical engineering, the measurements are limited to mechanical specific such as length, mass, surface profile, flatness, roundness, viscosity, heat transfer, etc.
Basic principles of engineering metrology
Metrology is described as the science of measurement, precision, and accuracy. In other words, it is a method of measurement based on units and predefined standards.
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![Problem 5. A force sensor generates a change in resistance on its output. To measure this resistance
change, the force sensor is placed in one arm of the deflection bridge with an input voltage of 9.5 V. With
no force applied, the sensor's resistance is 260 2, and all resistances in the bridge's arms are equal. The
static sensitivity of the sensor is 5.25 2/N.
(a) Draw the schematic diagram of the deflection bridge:
(b)
(c)
Calculate output voltage of the deflection bridge for applied forces of 55 N and 140 N:
Answer: For 55 N:
[M]; for 140 N:
☑Determine the current flow through the sensor under the applied force 140 N:](https://content.bartleby.com/qna-images/question/af033eb0-5213-479e-b20c-cfd2190955a4/60f4cdab-141e-4129-b454-6d20b42b36fa/iavdl36_processed.png)
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