Design Definition and 1000 Threads

  1. K

    Control System Gain design problem

    Is it possible for a Type 0 Open Loop Transfer function to have 0 steady state error? Context - Control System Gain design to meet a certain steady state error specification. The open loop T.F - G(s)=3/(s^2 +4s+3) (This is type 0 (n=0)) The closed loop T.F is Gc(s)=G(s)/(1+KG(s)), But my problem...
  2. N

    Advice request - design a toy steam engine and do a pull event

    Advice request -- design a toy steam engine and do a pull event Hello, Please do forgive me if this is inappropriate use of this sight, I'm looking for general advice, any suggestions as to where I could get information and thoughts on the subject are welcome. I've taken a challenge to...
  3. 2

    Design a PID Controller for System G(s) w/ 0% Overshoot & <1s Settling Time

    Homework Statement Design a controller for the system G(S) such, that the step response to close loop transfer function has an overshoot of 0% and a settling time of less than 1 sec. Homework Equations G(s) = \frac{1}{10s^2 + 5s + 10} Controller has to be a PID controller. The Attempt...
  4. D

    Electrostatic Precipitator Design

    I currently live in Mongolia, and during the winter months (6 months of the year) we heat our "Gers" see below picture, using coal. These are burned in stoves, and then the smoke is funnelled through a 11cm tube (chimney) through the roof. However this is very smoky and nasty, and bad for...
  5. M

    Physics homework problem - design a capacitor

    Physics homework problem -- design a capacitor Homework Statement An engineer needs to design a capacitor with a capacitance of 1*10-6F using a material with a dielectric constant 260. If the dielectric strength of the material is 8*106 N/C, and the maximum voltage that the capacitor is...
  6. E

    Optic and waves design challenge about lasers

    "A diode laser has a divergence of 5mrad in the p-direction and 1 mrad in the s-direction. Design an optical system in front of the laser which will make the output circular, and calculate the resulting divergence." Attempt; I am taking the course optic and waves, and the instructor did some...
  7. A

    Voltage Multiplier Circuit Design

    I have made a 3 stage voltage multiplier. My input is from the outlet so 120 V ac. I measure my output from the first and last capacitors of the bottom row as shown in the image. The output I am getting is 120 V dc. From the equation Vout(dc) = Vin(ac)*sqrt(2)*number of stages. With this...
  8. D

    Miniature Bridge Design Ideas: Simple or Complex?

    So I am the leader of a small group who has to build a bridge in 30 minutes on the last day of school. The only materials we can use are play-dough, straws, and rubber bands and it has to stretch 30 cm between two tables. Though I was looking for some ideas of a bridge design to use. Should I go...
  9. R

    How to Design FP resonator from Bragg mirror in Matlab?

    Homework Statement Below is a {MATLAB}code for Bragg mirror. How can I implement the code to create an FP resonator? Homework Equations The Attempt at a Solution %User input parameters num_layers = input('The Number of Layers in the structure = '); r_index1 = input('refractive...
  10. rogerk8

    How Can I Design a Tokamak to Ignite Ordinary Air and Control Plasma Diameter?

    Hi! I wish to know how to design a Tokamak of my own. This Tokamak will of course be very tiny but my intention is to ignite ordinary air and control the plasma's poloidal diameter by poloidal coils placed along the torous. I wish to do two things with my Tokamak: 1) Ignite ordinary air of...
  11. J

    Helical conical compression spring design

    I am designing a constant pitch, helical conical compression spring (round wire cross section) that will be compressed into a final desired shape. So my issue at hand is figuring out the pre-compressed geometry that will give me my desired final geometry once compressed. The compression will...
  12. rsk2mc

    Calculating the Diameter of a Breakaway Bolt for 40 ft-lbs Torque Requirement

    I am trying to design a breakaway Bolt, is there an equation to calculate how much torque is required to break the head of the bolt. Typically this bolt has two heads, one that breaks off and the permanent one. These are connected with a small neck that breaks at a given torque. That's what I...
  13. JJBladester

    How about Designing a Non-Sequential Digital Counter?

    Homework Statement Hello, I need to create a digital counter that follows this sequence: [FONT="Courier New"] 00, 10, 01, 11, 01, 00, 11, 10 A , C, B, D, B, A, D, C Homework Equations N/A The Attempt at a Solution There are four states (A = 00, B = 01, C = 10, D = 11) so I...
  14. B

    Optimizing a BJT Amplifier Design for Specific Parameters

    The outcome is: design a single stage amplifier with the following parameters: Rin=1KOhms Rout=1KOhms Voltage Gain=15 corner frequency=300Hz specified Transistor is BC109BP AC supply, 0.5V DC supply 20V supply frequency, not specified, I have assumed 1K We have not been given...
  15. Y

    How Can We Design a Solar Drone with Long Duration Flight and High Payload?

    Recently, Facebook suggested solar powered drones could be used to provide internet coverage in remote areas and they would basically act as low altitude 'geostationary' satellites. The current duration record for a solar drone is 2 weeks using energy stored in batteries during the day, to keep...
  16. B

    Troubleshooting Weird LED Behavior on PCB Design

    Hi, I recently designed a PCB in EAGLE, and I got it manufactured and I had all the pieces Sufrace Mounted on it, put it in the oven, everything seems fine and dandy, but I already killed 3 LEDs because of some weird thing going on. I have 5 different LEDs conneced to my circuit, the leds run...
  17. A

    Laser Interferometer-Need advice/opinions about design.

    Laser Interferometer--Need advice/opinions about design. Hey Everyone, I'm in the midst of designing a laser interferometry system to measure flatness and to level a stainless steel plate. It's a really simple design and I'm wondering what the drawbacks are for this type of system. I'm just...
  18. S

    MOSFET Design Doubt: Explaining Positive Voltage

    Can someone explain this sentence in MOSFET design.. The Since the drain will be at a positive voltage relative to the source the two pn junctions can be effectively cut off simply connecting the substrate terminal to source terminal.
  19. G

    Electrical Engineering - Control Systems - Design Via Frequency Respon

    done editing Homework Statement I'm given the following transfer function that represents a physical apparatus G(s) = \frac{X(s)}{F(s)} = \frac{3.333*10^{4}}{s^{2}} I'm asked to design a lead compensator to achieve closed-loop stability. The requirements are that it must have a transient...
  20. A

    C/C++ How to Improve the Design of a Linked List Class in C++?

    I decided to make a library for some common data structures and I'm facing some design problems. I wanted to implement linked list using classes in c++. Here is the sample class:- class Linked_List { private: int key; Linked_List* next; public: Linked_List(int key)...
  21. A

    Design of forced ventilation system for gas reciprocating engine

    Here is the real life problem I am facing: Gas reciprocating engine is situated in an engine room. The engine is primarily cooled by jacket water flowing to remote radiator. The engine surface must also be cooled by forced convection to maintain max air inlet temp of 40C. Ambient can reach as...
  22. J

    Control systems design software

    Are there any software programs for purchase that allow control system modeling and design for individual use under $1000
  23. V

    What are the necessary parameters for designing an IC engine?

    hey i am engineering student i am interested in designing a ic engine. I want to know necessaries and parameters for designing a engine hey please provide some reference for it thank you:smile:
  24. gfd43tg

    Op Amp Design #2: Solving Vo = 3*10^4(i2-i1)

    Homework Statement Design a circuit containing a single op amp that can perform the following operation: Vo = 3*10^4(i2-i1), where i2 and i1 are input current sources Homework Equations The Attempt at a Solution Where I'm at right now, I am just using the equation for a difference...
  25. gfd43tg

    Op-Amp Design for Vo = 12VS1+3VS2 with 50 kΩ and 25 kΩ Input Resistances

    Homework Statement Design an op-amp circuit that can perform the operation:Vo = 12VS1+3VS2, while simultaneously presenting an input resistance of 50 kΩ on the input side for source VS1 and an input resistance of 25 kΩ on the input side for source VS2. Homework Equations The Attempt...
  26. Saladsamurai

    Turbofan Combustor Aero Design: Getting ready for interview

    Hello! I recently applied for a "Combustor Aero Design" position at GE aviation and I am very optimistic that I will at least get called in for in interview. The position wants someone with 3 years of experience in an engineering position. I only have 2, but I still think I have an advantage...
  27. H

    How Can I Calculate Stress Points in My First Design?

    I'm trying my first design and want to make it successful before I actually make the product. I want to calculate what the stresses are and where they are likely to be. F is a varied load from -10 to 10 kN To find the critical points, should I check the points that i labeled A, B , C ...
  28. H

    Improve Your Transformer Design Process with Affordable Coil Design Software

    Hi everyone, I have been designing wideband transformers for a while. My biggest problem is the time it takes. So, I am looking for good software for coil design. I need something that can calculate from inputs the inductance, total number of turns, number of turns per layer, resistance...
  29. R

    Capacitor Design for 2GHz AC Frequency - 800W-kW Power

    Hi guys, I'm a new member of this forum. As a chemist, I don't have much knowledge of electrical engineering, and that's the reason why I'm here. Hope you guys can help me out. I'm going to go straight to the point. I need to build a capacitor connected to an AC generator with an AC frequency...
  30. J

    Designing Dowels for Bracket Mounting: How to Determine Size and Load?

    Hi all, I just started learning engineering mechanics this semester,so what I'm about ask may be a basic question in the subject.I came across a bracket that is used in a industrial equipment (i have attached a sketch as image).The bracket is used to mount a hydraulic cylinder.The cylinder has...
  31. C

    How do equations play a role in circuit design?

    I'm new to electronics, but I'm a physics student. I'm assuming that when someone designs a circuit, they use equations to calculate an end result (e.g. the charge on the electron) and they select components that make these changes in the circuit. For example, is the equation: ΔE=hf involved...
  32. C

    Design lift without electricity

    This is my project..you have any idea how can generate power to lift elevator.
  33. N

    Calculate CO2 Dissolved in 5M KOH Solution | Pressure & Temp

    Can someone tell me how much CO2 I could dissolve in a 5M aqueous solution of potassium hydroxide and how to calculate this? This would be done at high pressure and low temperature, and if you can tell me what temperature and pressure would be optimal and why, or how to figure that out...
  34. S

    Vacuum chamber thickness design

    Vacuum pressure for design of pipe Dear experts, I have a line pipe which internal design pressure is 98 bar,dia is 36: thickness is 13 mm,length is 12 mtr. I want to know that how much vacuum pressure sustain by this line pipe? Regards, Satish patel,
  35. S

    Discover the Best Brake System for a 70Kw Engine Dyno Design

    Hi all, I'm designing a 70Kw engine dyno and I'm thinking to use a friction brake with a pneumatic actuation. Which kind of brake system usually have such commercial engine dyno? Eddy current brake? Hydraulic one? Thanks
  36. E

    FPGA-Based System Design with Multiplexed Ring Oscillators

    Hello Sir, I am PG scholar in VLSI design.I am doing my project on FPGA based system in that i have to used ring oscillator.From number oscillator i need to choose two oscillator based on multiplexer.Can anyone tell me how it is?
  37. B

    The design of a low pass filter

    I am trying to design a 24V dc to 230V ac inverter operating at 50Hz. So far, by using multisim to simulate the circuit I have been able to achieve these parameters but my output is essentially a square wave. I am using a variation of a circuit that I have found on line, and I am now trying...
  38. J

    How to Optimize a Multi-Diameter Shaft with Varied Components in MATLAB?

    How would you go about designing a shaft with 2 bearings, 2 gears, and the shaft has various diameters (d1, d2, d3)? You know how much power needs to be transferred from one gear to another, the distance between both of the gears, the minimum allowed distance between gear and bearing centers...
  39. kini.Amith

    Design of a machine/ machine component

    I have an assignment for which I have to design a machine component (or structure) of my choice after estimating the loads that may arise on normal use. We are expected to use the things we have learned in our Machine Design course like design of clutches, brakes, shafts,couplings,power screws...
  40. P

    Calculating Bolt Selection for Butt Joint Connections

    I am trying to select a bolt for a butt joint connection. When you guys do bolt selection, are there certain equations you use to determine if the bolt will rigidly hold the 2 parts together in the joint?
  41. B

    Help with Schematic Design for BLE Device

    I am trying to build a BLE device and have run into some obstacles. I did create a basic breadboard circuit using an Arduino Uno and the Redbear BLE Module and am trying to shrink it down to a much smaller PCB. The schematic is attached as well as the datasheets for the microcontroller and the...
  42. L

    Help with Magnetic Clutch design

    I'm just designing a simple magnetic clutch that i can can alter the Break-away force by changing the air gap between the two diametric magnets. I guess I'm having a hard time understanding the practical difference between flux density, field strength and Force at a given distance of magnets…...
  43. N

    How Do You Design a Linear Generator for High Frequency Movements?

    Is there a clear design procedure for a linear generator. I'm in need of fabricating it for my project. what i exactly need to know is how to choose the coil and the magnets for high frequency, low displacement movements. this would help me in buying the correct coil and magnet for the same. is...
  44. B

    Optical design for a tent camera obscura

    Hello all, I've been trying to come up with an optical design to basically form images onto a sheet positioned near the ground, in an old camera-obscura fashion. Hopefully this image helps to visualize. http://www.pinholeblender.com/COimages/mirror.gif I know that I will require a 45...
  45. V

    Suspension design for medical stretcher

    Hello guys. I've planned to do my project on mechanising stretcher so as to minimise the injuries caused in handling casualties/traumatic patients on stretcher. My intuition was that if we could make a suspension/vibration damping mechanism along with special retractable compartments for holding...
  46. T

    With a Few Design Features for a Trompe

    Hi Everybody The plan is to build a trompe in rural Nepal. Has anybody here built one? Sure would love to hear from you. I believe we could generate enough psi to run a pneumatic motor that puts out 8.4 hp possibly more but i would like to start there and see what sort of output we...
  47. J

    Problem - Embedded System Design

    Homework Statement Your embedded system has an 8-bit microprocessor, which has a 16-bit address bus. In addition, you have a 32-Kbyte FLASH chip, and a 8 KByte RAM chip. You want to locate the FLASH chip right in the beginning of the address space and the RAM at the end of the address space...
  48. M

    Optimal Blade Design and Reduction System To Lift 5lbs

    Hello, I'm working on a project for my college class where we need to build a windmill that will be able to lift a 5lb mass 3ft above the ground. The energy of the wind is produced by two 20 inch box fans. We are allowed to use several materials- pine wood, ice cream pails, floss, nuts, bolts...
  49. W

    Thermal properties - Experimental Design

    Apologies for the break from format, but I'm not sure how to make this fit! I'm designing an experiment to compare the insulation properties of several materials. I would like to find the Thermal Conductivity (K) or the U (or R) values of these materials. However essentially all I am after...
  50. B

    Efficient Design of a Full Adder with Karnaugh Maps

    Just a quick apology for the long post. Recently I have been looking into digital circuit design and how karnaugh maps can help you simplify a logic table to simple gates. I extended this idea to trying to derive the most efficient full adder design and came up with the following logic table for...
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