Lab #6 Report

Chapter 12 - Lecture Notes.pptx: (MAE 272-01) (SP25) DY... Scores

Subject: Mechanical Measurements Do not copy other online answers

A temperature sensor Pt100 has a rage from -200C to 850C as shown in the figure. Considering the function is linear, find the sensitivity of the sensor? How can we ?improve the sensitivity of this sensor Resistance vs. Temperature- Pt100 (385) 400 350 300 250 200 150 100 50 -200 100 100 200 300 400 50 600 700 800 900 Temperature ["c) Resistance [Ohms]

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The output of a potentiometer is to be read by a recorder of 10,000 ohms input resistance. Nonlinearity must be held to 1 percent. A family of potentiometers having a thermal rating of 5 watts and resistances ranging from 100 to 10,000 ohms in 100- ohm steps is available. Choose from this family the potentiometer that has the greatest possible sensitivity and also meets the other requirements. What is this sensitivity if the potentiometers are single-turn (360°) units?

1. Piezoelectric materials are often used as sensor materials because they transform mechanical deformation to electrical charge. Figure 1 shows an electric circuit of a piezoelectric sensor. The piezoelectric material is modeled as a current source in parallel with a capacitor. The resistance models the impedance of an amplifier. The goal is to make the output voltage v(t) proportional to the input charge q(t), so that we can use the voltage v(t) to measure the charge q(t). The ODE governing the input and output is dv RC +v=R- dt Ddq dt (1) where q(t) is the input and v(t) is the output. (a) Determine the frequency response function G(w). You can leave it as a fraction of two complex numbers. (b) Find the magnitude of the frequency response function G(w). (c) Show the asymptotic behavior of G(w) when w <1/RC and when w≫ 1/RC. (d) Plot the magnitude of G(w). (Not necessarily the Bode plot.) (e) For what frequency range can you use this sensor? x(t) R k с ġ(t) v(t) →f(t) Figure 1: A…

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A thermocouple produces an e.m.f. in mV according to the temperature difference between the sensor tip 0, and the reference junction 02 (also called gauge head where the reference junction is embedded inside the display unit for the thermocouple) such that e = a(0, – 0,) + B(e; – e; ) a = 3.5x10? mv/deg and B = 8.2x106 mV/deg. The gauge head is at 20°C. The output is 10 mV. Calculate the temperature of the sensor.

Instrumentation & Measurements This homework measures your capability to design/analyze various components/variables of ameasurement system based on what you have studied. Question is Attached in image. Thank you.

2. Figure 1 shows a sensor consists of a core, an armature and a variable air gap. The core with 3.0 cm depth and 10000 relative permeability has 200 coil turns. On the other hand, the armature is a steel plate of thickness 0.2 cm and has similar relative permeability with the core. Assuming the relative permeability of air is unity and the permeability of free space is equal to 4x x 10-7 H.m, calculate the inductance of the sensor for air gaps of 0 mm and 2 mm. Please write the answers in 3 decimal places. 2.0 cm 1.0 cm 6.0 cm 3.0 cm 1.5 cm Figure I

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2. [5 points] (a) Vs (b) R Rx IG contact Ammeter A A potentiometer is to be used to measure the voltage Vm as shown above. L is the length of the potentiometer and x is the length of resistance to the contact point when the measurement is ready to be taken. VmRm What conditions are required for a measurement to be taken? Does this place the system in null or deflection mode for the measurement? How is Vm calculated from the measured length x? Provide a mathematical expression. No written explanation required.

Please answer question with as much detail as possible Please Use the “NCEES FE Reference Handbook 10.0.1” which can be downloaded for Free from https://ncees.org/ as your Reference for tables and formulas

Answer the following questions, to test your understanding of sampling frequency and bit depth. 1. You are part of new automobile design team, and are responsible for designing the sensor data collection system. The specification of the data collection system is that is must be capable of receiving data with a resolution down to 0.1% of full scale (1 part in 1000) for any given sensor. For example, suppose the driver pushes the gas pedal, the motion of which is read by an electronic sensor such that the range of motion is defined from 0 (not pressed) to 1 (fully pressed). If you want 0.1 % accuracy, you need 1000 possible data values between 0 and 1. How many bits do you need to represent data to 0.1% accuracy? Insert a picture of your work.

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MECT361 Mechatronics Components and Instrumentation PLEASE GIVE ME THE short answer and wite it by keyword thanks