Assignment #10 -

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Hi follow the pictres from slied 9 until end

ENGR111 ENGR TECHNIQUES Laboratory Session – Section E Wednesday 6:00PM – 8:00PM Instructor: Ken Wochele Slide 1 Tonight’s (11/09/16) Agenda • Schedule • Assignments • Review Assignment #9 • Review Assignment #10 • Continuing Building Musical Note Slide 2 ENGR 111 Lab E Schedule Professor Prof. Wochele Slide 3 KH 346 Week Date Topic Class Intro Units Location 1 31-Aug 2 7-Sep Spreadsheets KH 346 4 14-Sep 5 21-Sep 6 28-Sep Project 1 KH 331 7 5-Oct Project 1 KH 331 8 12-Oct Project 1 KH 331 9 19-Oct 3 26-Oct Student Presentations KH 346 10 2-Nov Project 2 KH 333 11 9-Nov Project 2 KH 333 12 16-Nov Project 2 KH 333 13 23-Nov Thanksgiving - 14 30-Nov Project 2 KH 333 15 7-Dec Student Presentations KH 346 Technical Documents and Slides Student Presentations Intro to Project 1 Competition Project 1 KH 346 KH 346 KH 346 KH 331 ENGR 111 (E) Assignments & Due Dates • Assignment 01 (100 pts) – Units • Assignment 02 (100 pts) – Spreadsheets (R – C Circuit) • Assignment 03 (100 pts) – Technical Documentation (EE Lab Formal report) Complete Complete Complete • Assignment 04 (100 pts) – Teams E1, E2, & E3 Individual Proj 1 Presentations Complete • Assignment 04 (100 pts) – Teams E4 & E5 Individual Proj 2 Presentations Complete • Assignment 05 (100 pts) – Teams E1, E2, & E3 Team Proj 1 Presentations • Assignment 05 (100 pts) – Teams E4 & E5 Team Proj 2 Presentations Complete 12/07/2016 • Assignment 06 (100 pts) – Project 1 Blade Efficiency (Excel) (Project 1 – HW 1) • Assignment 07 (200 pts) – Project 1 Turbine Calculations (Excel) (Project 1 – HW 2) • Project 1 Competition • Assignment 08 (150 pts) – Project 1 Formal Report Complete Complete Complete 11/01/2016 • Assignment 09 (100 pts) – Project 2 HW1 (Excel Fourier Series) 11/15/2016 • Assignment 10 (100 pts) – Project 2 HW2 (Excel Electrical & Mechanical Note) 11/15/2016 • Assignment 11 (150 pts) – Project 2 Executive Summary 11/30/2016 Slide 4 Project 2 HW #1 Assignment #9 Fourier Series Expansion 11/15/2016 Slide 5 Assignment 9 – Project 2 – HW #1 Fourier Series Expansion of a Square Wave 1 2 1 1 1  f (t )    sin t  sin 3t  sin 5t  sin 7t   2  3 5 7  For 0 ≤ t ≤ 360 f (t ) . Slide 6 . . . . . . . Assignment 9 – Project 2 – HW #1 Excel Formulas Slide 7 Assignment 9 – Project 2 – HW #1 What Your Graph Should Look Like Slide 8 Project 2 HW #1 Assignment #10 Designing Mechanical & Electrical Notes 11/15/2016 Slide 9 Widener University ENGR 111 – Section E Project 2 – Assignment 10 - Design of Electronic and Mechanical Notes Due Date: 11/15/2016 A. Electronic Notes 1. Oscillator Calculation: Using a MS Excel spreadsheet to determine the values of the variable resistor, RVARIABLE, using (Eq.1) which is required to obtain the electronic frequencies listed in Table 1. Remember to include units on all values. f  1.46 R1  2 Rv C3 Rv  1.46 R  1 2 f C3 2 Assume C3 = 0.1 μF and R1 = 470 ohms for the oscillator. Table 1 – Frequencies of musical notes Typo R3 on you handout should be R1 Slide 10 (Eq. 1) Equations for Filter 2. Using the same spreadsheet determine the values for the resistor, R, using (Eq. 2) for the break frequency (fb) for Sallen-Key Low Pass Filter (LPF) for each of the electronic music notes listed in Table 1. Remember to include units on all values. 1 fb  2R C1C2 Assume C1 = 0.1μF, and C2 = 2xC1 = 0.2μF. Slide 11 R 1 2 f b C1C2 (Eq. 2) Assignment 10 (Part A) – Electrical Note fb  Slide 12 1 2R C1C2 R 1 2 f b C1C2 A. Mechanical Note – Cantilever Steel Beam, Copper Chimes, & Steel Chimes B. Using a new workbook in the Excel spreadsheet from Part A, investigate the f1(L) relation for three cases: (a) Cantilever Steel beam described in Table 2; (b) steel tubular chime described in Table 3; (c) Copper tubular chime described in Table 3. For each case: 1. Create a table with two columns: L (in) with at least 10 values, and f1 (Equ. 3) the corresponding calculated frequencies (Hz) for each of the three cases. Adjust the range of L (in) so that the frequency is approximately between 100 and 500 Hz. The range for L (in) will differ for the three cases. (Equ. 3) 2. To verify that the Excel calculation gives correct results, calculate by hand one frequency for the cantilever steel beam only using the values listed in Table 2 with L = 4 inches. Make sure that all the units are consistent. Compare your result with the result from Excel (a) Steel beam. Hint: Set L in 10 evenly spaced increments between 2.5 inches and 4 inched Hint: Increment = (MaxLength – MinLength) / (10 – 1) Slide 13 Typo Eq.1 on you handout should be Eq, 3 Table 2 Physical Constants Used for the Cantilever Steel Beam (Eq.3) Units are mixed convert to SI Unit not US Customary Need to convert to Pascals Slide 14 Assignment 10 (Part B) – Cantilever Beam (Theoretical) Slide 15 1. Graph f1(L) using ‘scatter’ plot in Excel. Generate a separate graph for each of the three cases. Do not forget to add labels, units, etc. For the cantilever steel beam graph add the average values for the frequency f1 found experimentally in the laboratory using the piezo sensor. Refer to Table 4. Table 1 Vibration of cantilevered beam – quantities to be measured. (This table will be completed in Lab on 11/9) 4.0 3.5 3.0 2.5 We are only going to measure 4 lengths not 5 Slide 16 Assignment 10 (Part B) – Cantilever Beam (Theoretical & Experimental) Measurements in the lab Slide 17 Note: The steel tube is referred to as ½ inch nominal size electrical metallic tubing, or EMT. It has the inside diameter (ID) of 0.622” and the outside diameter (OD) of 0.706". The copper tube is referred to as ½ inch nominal size Type M copper tubing, with 0.569" ID and 0.625" OD. Typo Eq.1 on you handout should be Eq, 3 Table 3 Physical Constants Used for Copper & Steel Tubular Chimes (Eq.3) (1) f1 represents the fundamental frequency in bending mode Slide 18 Assignment 10 (Part B) – Steel Chimes (Theoretical) Slide 19 Assignment 10 (Part B) – Copper Chimes (Theoretical) Slide 20 C. Mechanical Note – Polyvinyl Chloride (PVC) Palm Pipe 1. Using a new workbook in the Excel application from Part A & B, investigate the f1(L) relation and calculate the target pipe lengths for the PVC palm pipes, as described by (Eq. 4). Where c is the speed at which the disturbance travels, also known as the speed of sound, which at room temperature is about 344 m/s. f 1(L)= 0.23 c /L + 24 (Hz) (Eq. 4) 2. Determine the value of the theoretical PVC pipe lengths (in), which will result in the frequencies you selected for your song. Slide 21 Assignment 10 (Part C) – Palm Pipe (Theoretical) Slide 22 Assignment 10 – Project 2 – HW #2 Parts D – Song Selection Slide 23 Sample Melodies Slide 24 Project 2 Back to Building th Electrical Notes for the Music Machine Slide 25 Oscillator + 5VDC Buffer Low Pass Sallen-Key Filter CBYPASS .01F U1 NE555 R3 470Ω 4 8 /RESET 7 C2 .2F Vcc Discharge X RVARIAB 6 3 Threshold 5 Out LE 50KΩ 2 C3 .1F + 5VDC U2A TL082 8 R1 + U2B TL082 R2 3 7 Trigger Ground 1 6 Control 5 C4 10nF - 4 C1 .1F + 1 Page 2 2 - To Switch - 5VDC To Speaker Amp To Speaker Our task is to find values for RVARIABLE (555 Oscillator) and R1 & R2 for the Sallen-Key Filter. Widener University 09/30/15 ENGR111 Music Machine Electrical Note Page 1 of 2 Slide 26 Checking Your Design Using a Simulator Slide 27 Simulator Output Slide 28 Two different approaches for building the circuit. Note the speaker/amplifier and switches not shown NE555 Oscillator Buffer/Filter Ground Strap C4 Power R3 Rv Note: R1 = R2 = R R2 C2 C3 Extra capacitors not on schematic Will discuss in lab Note: R1 = R2 = R TL082 R1 555 C1 R3 C4 Rv R1 R2 555 C2 C1 Buffer/Filter Ground Strap C3 NE555 Oscillator Widener University 09/30/15 ENGR111 Music Machine Electrical Note Page 2 of 2 Slide 29 Widener University – School of Engineering ENGR 111 How do you generate +/- Vcc DC Voltages? Slide 30 Widener University – School of Engineering ENGR 111 – Generating +/- DC Voltages Chassis Grounds Isolated Outputs +5VDC -5VDC Slide 31 GND +5VDC +5VDC Widener University – School of Engineering 5.0 -5.0 +5.0 5.0 +5VDC +5VDC + Isolated Power Supply + - 5 VDC Slide 32 +5VDC Isolated Power Supply Experimentally Checking RVARIABLE (Rv) Adjust Rv until the desired frequency appears on the oscilloscope 555 Output Slide 33 Experimentally Checking Your Design RVARIABLE (Rv) Filter Output Adjust Rv until the desired frequency appears on the oscilloscope 555 Output Not a perfect sinewave but close Slide 34

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