Control Definition and 1000 Threads

Homework Statement A space capsule was left rotating rapidly about its axis at N = 34.0 rev/min after a collision with another capsule. You are the flight controller and have just moments to tell the crew how to stop this rotation before they become ill from the rotation and the situation...

Online its a very big thing called Lucid Dreaming. I would be skeptical of a lot of the claims online, as its very hard to directly prove, but i can remember dreams that i have had before where i suddenly realized i was dreaming and was able to alter my dream accordingly (only for very short...

This Is Central Control! Ok I was watching a BBC documentary last night, Louis Theroux Weird Weekends. It was about UFO hunters. Anyways the funny part was this one guy who said he could talk to an 'entity' named Korton. He was from the planet Koldas. Anyways, the channeling is quite...

One of my tasks these days is reseaching about long term reactivity control on a typical PWR. As I know in the long term reactivity control we must consider to the role of burnable absorber and boric acid concentration in reactor core during its operation cycles. So I want to do some...

ckg733 the so-called "anti-aging molecule" - how to control aging? I've heard ckg733 be called the "anti-aging molecule" and apparently it can reverse aging of cells? Could this be used to reverse/stop the aging of an organism? I mean if you can control the age etc of every cell you could use...

Can anyone please send me the simulink model of boost converter i couldnot find any in the MATLAB help tutorials... I didnot know how to give the pwm control in simulink..could anyone please send me the model..

Control and protection electrical circuits are one of the important portions of electrical systems designed and shown by standard symbols. Usually the circuit is supplied by positive and negative polarity of one battery. In almost electrical circuit diagram sheets we can see a positive line of...

I'm curious to know if there is any way of controlling the amount and rate of discharge from a capacitor, can anyone help me out?

I need help buiding a circuit that would use a potentiometer to control power from a small battery (AA's, 9 volt, or similar) to a small electric motor. I would like to have the motor pulse on for @5 seconds and then go off. The 5 seconds "on" would remain constant, but I would like the pot to...

Hello, I am a junior currently majoring in Computer Engineering. I was quite fascinated by the whole field of Robotics. I haven't entirely decided on which particular field of robotics I wanted to pursue on in the future - either control aspects or artificial intelligence. I happen to like...

can anyone tell me how to control a motor or a light using visual basics (i know how o use visual basics but i don't know how to use it to control a motor or something)

Hello, I am hoping to build a model rocket with a roll control system for my senior project. Since the idea of building or obtaining a wind tunnel seems infeasible I will need to theoretically calculate how this rocket will behave with various canard fin angles and at various air speeds. I...

Anyone seen this show? This guy is a mentalist/hypnotist who goes around doing apparently remarkable feats of suggestion and hypnosis. It's reminiscent of David Blaine in format, but very much more interesting for psychological reasons. The two remarkable feats he performed on the episode...

Hi, i would like to make a program which can detect my latency, if it's low then it would open a program and if it's high it'd do nothing, i'd also like to loop it so it tries every half an hour or so. Would this be possible? If so any advice on how to start I'm a bit rusty and have only tried...

Need Materials for "Stability and Control Helicopter" Hi everyboy ! I'm now very disappointed, it's beause I have googled the materials of "stability and control helicopter" and what I got is nothing but disapointment. So, I need your help for the materials. Is there anyone got them ? please...

I am interested in building a rocket with feedback control system... so I have been interested in model rocketry lately and I was wondering how feasible it would be to design and build a model rocket for my senior project complete with a control system to ensure it flies straight up. I was...

I know that such mutations would be harmful to the phenotype and thus there would be selective pressure against them. Nonetheless, do they exist? (and are there any conditions associated with them?)

Was given an assignment to create an AI that can control the music's volume by using fuzzy membership function (slightly soft, soft, loud, very loud) via voice control but the problem is we need to implement hardware into the project because my course is Electronic Engineering. So far, I've...

Hi guys, I'm developing a BLDC motor controller with load. I've bought a Maxon E40 motor . But some things i can't figure out: I want to control position, speed and current (torque). I use PID controller to do it. In the closed loop system the output of the speed controller should be input...

Hi, I need help. How can I redirect/bend magnetic fields such that it will go in one direction instead of all around. That is going in a straight path instead of into multiple directions. :smile:

:rolleyes: hey guys, I'm new in the field and I'm running into this basic problem that's giving a headache. I got a pneumatic slide that's supposed to go up and down. It's controlled by a double sol, 2 position (I'm pretty sure that's the type of valve on the machine now). The valve power is...

hey i m kinda new at making radio controls... just made a simple RC with a 2 bit Tx- Rx kit that i got from a local shop... all my robots are wired... so i want to move on to a proper radio control(coz they don't teach RC makin in mechanical engineering:cry: :cry: ) ... can anyone suggest me...

What do we actually have control over?

As much as I hate starting a thread about a youtube video, I think this one is important I had no idea stability control was that good; this guy was able to drive on sheet ice. My car does not have stability control or even a limited slip differential, so my left turns in winter are a lot...

Hi all Iam doing my master's degree. I want help regarding implementing Automatic climate control. I found one in MATLAB but it doesn't meet my specifications. Can anyone help giving me any idea or providing equations regarding AirConditioner and Heater.

Hey all I am trying to sort through data for controlling a unipolar stepper motor with a microcontroller. I have done this before but the hardware was already in place on a development board. What I need is a way to drive a 12V Unipolar stepper with a microcontroller. I have found a number...

hello i am a mech engg student, i have few doubts in fluid dynamics and thermal engg subjects.. i would like to be cleared of them by this discussion forums could anyone please explain the principle of flow control using valves...waiting for ...

http://mediamatters.org/altercation/200701300005 Gimme a break this means political appointees will now have influence over all government agencies. Policy and what the public is told will be dictated by novices instead of scientists and experts in a field. We had a thread on this same...

Hi all, Just joined and have a question I'm hoping someone can help me with. I'm putting a Chrysler 300 M electroluminescent gauge set in my 2000 Intrepid (backlit gauges). The problem is that I have to swap the faces onto the original cluster electrics in order for everything to work...

navier-stokes smoothness problem almost solved Penny Smith has made progress with showing that smooth conditions exist for all time in a domain for the Navier Stokes equations http://notes.dpdx.net/2006/10/06/penny-smiths-proof-on-the-navier-stokes-equations/ However a flaw was found in the...

Hey everyone, Just something for you to think about, My school has just started a project do build an electric power car, (for more info please look at our website http://greenpower.aldenham.com ) and we have come up against the problem of how to regulate the power going to the motor. We are...

i was just reading about chinas 1.4 boy to girl birth ratio and it has me wondering is this going on in the united states? it seems to me like finding the right girls has always been a fight. shotgun wedding :eek: i hope not.

Hi, I am currently choosing my specialisation modules. May i know what are the most important aspects that an electrical engineer should know with regards to "control systems"? Tks :smile:

This will amaze you :bugeye: and make you laugh. Sitting in a chair raise your right foot then move it in a clockwise direction. Then with your right hand make a 6 in the air with your finger. You can't keep your foot from going counter-clockwise. How long will you do it until you give up...

For my leaving cert project (Ireland) I have to build a table tennis ball serving machine. I'm settling on a design that uses two spinning rotors to fire the ball out as it passes between them, but I'm wondering is there any way to automatically adjust the speed going to one of the rotors (each...

Relevant question An energy flow control system is one where electrical signals are used to control the flow of energy. quite often electrical energy. A modern example of one such system is the manual control of the speed of a sewing machine motor by way of a foot opearated variable...

How do you download the ActiveX control. I need to activate Microsoft Reader.

All very good, but would it not be an idea to have a mechanical back up, that if all else fails the pilot had some control, the mechanical system could control servo tabs that drive the main control surfaces, surly not very expensive or heavy.

hi alll! just a quick one. You know when you design a controller - you go and plot the open loop transmission, L(jw) on a nichols plot, where L(jw) = C(jw)H(jw) P(jw) where P and C are the plant and controller respectively. You then 'manipulate' this plot (i.e. vary your controller) until...

Hi, I am doing a small project on the "construction and control of a modern tensile testing machine" and am a bit unsure as to where to start on this! Does anyone have any ideas as to where I could find information on this subject, or know anything that might be helpful? Thanks, Chris

Greetings mega-brains! :biggrin: A delta wing configuration, because it does not have a separation between the main wing and the horizontal tail which holds the pitch control surface(s), has a natural aerodynamic, temporary control reversal when initiating a pitch maneuver from a...

hi everyone.. this is my first post :smile: im investigating a catapult i would like to know how to control an angle of a catapult to get maximum distance ? thanks ..

hey guys... Say i have a second order system. From this i can establish a peak time, a settling time, and overshoot percentage... but what is my response time - is the settling time? Also is there some sort of rule of thumb for decreseing the response time?? like say, for example...

hey can you find the phase/gain margin of unstable system. I am asked for the phase margin of this system, but the nyquist plot reveals that -1 is encicled verfiying that the system is unstable,.. how can you get a phase margin of an unstable system?

hey guys. this has to do with determining the phase and gain margins of a system. i've read and understood the follwing: "To find GM, first find the phase crossover frequency, wGM. This is the frequency where the phase curve passes through -180. Get the magnitude at that frequency...

This is a field that is immensely interesting to me. Right now I am a dual major in EE and physics and I am taking a control systems course right now, with lab. I like it so much that I might want to go into this field as a profession, and I am contemplating taking a few more control classes...

Hey all, I am currently trying to figure out how I can control the direction of a laser beam. Galvos are widely used in order to electronically change the direction of the beam. Although, I was hoping to find a way to do this without mechanical parts. There are two ways I have looked at...

recently acquired a CMA system with Auger System Control electronics. problem is, the digital panel meter is missing, so instead it was used in the past by hooking it up to a multimeter. i am trying to figure out how this thing works and in the user manual it is constantly referring to the DPM...

Hello all, Please forgive me if this is the incorrect place to ask this question, yet I happen to own an Ungar 4024 solder/desolder station that I would like to use for PCB work. While the system uses an analog (slide) control for temperature variation, the numbers listed on the slide are...

The anti-science school board took some pretty nasty hits from last night's primaries. Pro-science incumbent Janet Waugh kept her seat, while Connie Morris and Iris Van Meter's replacement (son-in-law Brad Patzer) were both eliminated. 2 anti-science board members did make it to the November...