Control Definition and 965 Threads

Using Laplace can someone please show me in simple terms how i would solve the following function? This is a lecture example. The solution just shows the answer, nothing about how we get it or what it represents. I am finding this subject particularly difficult to come to grips with. δ(t-1)...

Hello forum, I have a ceiling fan with a remote control. The battery dies too quickly. There is only one IC in the little circuit board. I would like to understand where the issue is. Can I do that with a voltmeter? But where would I look? What approach? Where would I measure the voltage to...

Why is time constant form of transfer function in control system better than pole zero form ? If a closed Loop transfer function is given to me how should i find D.C gain ?

Homework Statement In my notes it is stated that an integrator adds a phase lag of -Pi/2 and thus can cause instability. I want to understand what this really means and am deviating from the notes somewhat so do not know if I am barking up the wrong tree. Homework Equations Given a...

I am trying to begin with fuzzy logic, but this initial question is preventing me from moving any forward. It appears that fuzzy logic control is just an improvement over bang-bang control system. Like instead of doing bang-up , bang-down it does bang-up-hard, bang-up-small bang-down-small etc...

Homework Statement Here is the system I am looking at Homework Equations So I worked out a formula for the steady state error and put it in a form similar to masons gain formula The Attempt at a Solution But when I try and draw a block diagram and work out e I get...

I'm 95% sure I got it all correct, but I'd appeciate another set of eyes Homework Statement 1) What's a thermistor? What is its principle of action? 2) What's a thermocouple, and what is its principle of action? 3) How does temperature transducer act based on the bimetal principle...

The NRA says it wants existing laws to govern the control of firearms. The NRA removed the power of the ATF to execute the existing laws. My forecast for future political action is that the NRA will face full legal disclosure in the SCOTUS. Todd Tiart - Fox news July 19 2011 Todd Tiart...

Homework Statement A horizontal water jet produces a wide sheet of parallel-flowing liquid that strikes an inclined plate and then divides, with a fraction of the liquid flowing up the plate and the remainder flowing down the plate. The figure shows a section of the flow. All surfaces of the...

I have to build a device which have 4 dof governed by 4 separate motors. Need to remotely control which was the motor spins and when to stop them. What equipment do I need? and is there any guidelines? Need help asap. Thanks,

hey ... i am working on Electric control panel for pump but the Problem i am new on this Field all i know in this Electric control panel is conductor please can you help me to find References explain Components of Electric control panel or just anyone tell me the names of...

Hello I am designing single phase inverter with TMS320LF2406 DSP. I created sinusoidal output voltage, and now i want to make regulation. While reading about regulation i found that it is recommended to use outer loop as voltage loop to generate Iref using PI controller, then this Iref...

So this is my idea: make concrete using iron sand, preferably one with a decent ferromagnetic interaction. As the concrete sets, apply a magnetic field. The ferromagnetic particles align to the field creating a structure within the concrete. Possible to coat the iron sand in a retarding...

I would like to try and set up a pressure control system in my lab using house vacuum and compressed air. Or otherwise using a compressed air source and vacuum pump. I want to be able to control the pressure in a reservoir (a syringe) within the range of -15 to +15psi. I was thinking...

How to design a LMFBR control system. I mean the whole plnat's operation and reactor control system.

with s being the sensitivity of a transfer function GC/(1+GC) to the parameter G. (1/(1+GC) I see mathematically how it works out. My question is about the profoundness of the statement. Qualitatively, what does it mean

I need to design a class D low power RF amp that I can control the RF output of without tampering with the input signal. I need about 200mW out @ 50 MHz but the input drive is a digital coded pulse train I can't tamper with in any way. I need class D for best efficiency and battery life. How...

Hello everyone! We have built the following model with Automation Studio. It's a simple electropneumatic system with a 4/3 valve and a piston. I would like to eliminate the oscillation of the piston with a PID controller. Does anyone know how to do it? Thanks

control system -- open loop transfer function and open loop gain Is there any difference between open loop transfer function and open loop gain ?

hello all, i need some help on this one. i want to do an article about the posible aplications of quantum entanglement in aircraft flight control systems. i want to entangle two transistors, put one of them at the ACE - actuator control electronics (probably) in the pilot's cabin and the other...

Hey everyone- Does anyone have any idea what kind of software/computer languages/tools a control systems engineer would use on a daily basis? I know 'control systems engineer' is a vague title- I'm looking specifically at like aircraft flight control systems (networks of mechanical and...

Hey everyone. I'm hoping to get some advice from you guys. I am a senior studying Electrical Engineering. I am currently applying for graduate schools and for graduate fellowships (everything is mostly due mid-December). I plan to pursue a PhD. The only problem is, I'm not entirely sure which...

Hello, I have a general question regarding what is the best controller (PI, PD, etc.) to control the position of a mobile robot in order to follow a known path. The mobile robot at hand is a mechanism (a 4 bar linkage with its two base gliding on two parallel but not straight rails) and I...

I'm making a circuit to control the temperature of a peltier element, and I'm trying to figure out the cheapest way that will actually work over the long term, and not burn out my components fast. At first I wanted to just use standard power regulation to control the power to the element and...

Homework Statement I am given the transfer function Gp (s) = 1/(s+16) and I have to design a controller of the form Gc (s) = K(1 + 1/T*s) (which is a PID controller) To meet the following requirements: Maximum steady state error to a steadily changing desired position = 5% Maximum...

How is the compressor speed controlled in a car air conditioner, in compressors driven by engine moved belts? Is temperature controlled just by on/of of the solenoid clutch? Electric air conditioner (automotive), not driven by (directly) by engine, is widely used today? Another question, not...

Assalamualaikum... << Islamic translation by Moderators: "Peace be unto you" >> hello everyone... i just want to know how to control the light brightness for automatically... what i know...in manual we can use a dimmer to control the light brightness..(correct me if i wrong)... if anyone can...

All of a sudden 3/4 of spam headed my way is landing in my Yahoo e-mail instead of spam folder. Any way to reset the filtering/blocking apparatus? the yahoo 'OPTIONS' button only allows me to decide how often the spam folder is deleted, nothing I can find about filtering levels...

I was trying to drink a vegetable smoothie, which I really don't like, and I vomited twice in the process. My friend drinks it without issue. What's the difference here? My conscious mind really wants to drink the smoothie, but a few gulps in I feel an uncontrollable gagging. I'm curious how...

I have narrowed down a control systems question I am doing to the following function in the S-domain.. numerator = (5s+1) denominator = (s+3)(3s+2)(s^2) Using partial fraction expansion - I compute A = 14/63... D = 1/6... B = -2.25 And I can go no further - because both MATLAB and MAPLE...

Hi, I am trying to provide a humid air stream along some ¼” tubing, where I can roughly control the relative humidity and temperature, this doesn't need to be exact. I already have a compressed air tank, regulator and flow meter to provide the correct flow rate. I need to find out...

Homework Statement Consider the electrical circuit shown: http://imageshack.us/a/img525/8163/p1circuit.png Let the state variables be x1(t)=Vc(t), x2(t)=iL(t), and x3(t)=Vc(t); output is Vo(t). Write the state-space equations in matrix form and find the transfer function, T(s)=Vo(s)/Vi(s)...

I was watching “Hell on Wheels” (nice series by the way), and with a train stopped they connected their telegraph terminal to the telegraph cable, and decided to send a message in a particular direction. How was this done? How is the direction for sending the message controlled? Thank you Regards

I have a single phase DC-AC inverter (or H-Bridge) with an inductive load I want to design a controller that controls the PWM signals to the control side switches that will ensure there is a sinusoidal current through the load. I need to use PI control and implement into a DSP so it has to be...

This question is related to adaptive cruise control in new vehicles. Adaptive cruise control automatically determines the speed at which a vehicle should be traveling by measuring the distance between it, and the car in front (mainly for use on highways) There is a general rule that three...

Most nervous systems use electrical signals from the brain to control the body. Could one not theoretically interface a computer with the first vertebra to override commands from the brain, and control the body? I'm sure that biologists do not yet understand the nervous system enough to...

I want to controll ac motor using pwm.sir told me for that you required volage controller and phase controller.if voltage is controlled by pwm so why i want to use this phase and voltage controller?

Homework Statement A car park has 5 parking slots. When the fifth car enter the car park, a red light notification will turn on indicate the car park is full. When the car park cars decrease from 5 to 4, the red light is distinguished. Homework Equations The Attempt at a Solution I set the...

When the voltage / frequency is maintained constant in 3 phase Induction motor i.e. flux is maintained constant by changing the voltage and frequency in same proportion, What is the torque proportionality equation. Whether Torque is proportional to Slip X Frequency or Torque is...

Hi all, got a Control question here, and I'm struggling with what I assume is a simple algebraic step. Thanks in advance! Homework Statement A closed loop control system governs the level of water in a tank (H(s)) to meet a target height (Hi(S)). The flow of water into the tank is controlled...

Homework Statement Air is to be compressed from 120 kPa and 310 K to 700 kPa and 430 K. A heat loss of 20 kj/kg occurs during the compression process. For air: cv=0.7165 kj/kg.K and R=0.287 kj/kg.K . A) Neglecting kinetic energy changes determine the power input required for a mass flow...

Hi guys, I am doing a final year project this semester on the above topic. I wanted to know whether to implement hardware or using software like Matlab. Thanks in advance.

I was thinking of using a 3 speed or dimmer switch to control the motor speed.

Hi. I would appreciate if some one could help me with my question. But first some background: There is a classical problem of inverted pendulum under control. Pendulum can be put to UNSTABLE equlibrium and (if no control applied) it can put itself to STABLE equlibrium. So system under...

Hi, I'm looking into the control of a PMSM (permanent magnetics synchronous motor) motors using H-briges and PWM (puls width modulation). I'v seen motor controllers that use a PID controller for speed regulation. The output of the PID controls the PMW. This makes sense to me because the PMW...

Hi there - I'm trying to build a decorational device that holds a rather heavy ball and I want to be able to control it's "movement/roll" in the X and Y directions (they are horizontal as well as orthogonal). The two black cylinders (X and Y) aren't floating, but I forgot to draw their...

need ideas for graduation project in control field

Homework Statement Given a parametric eqn for the x,y coordinates , x(t),y(t) , how can i find the control points? Homework Equations de Casteljau's algorithm is used to compute the value for a given t given the control points. The Attempt at a Solution Control Points 0,3 are given...

I want to what is the actual job of a Control and signal processing engineer. And does he/she has any kind of job type in power plants or energy supplies? hope to get an answer as soon as possible. Airer

Hi I have an old electric paper guillotine. Guillotine have two esential functions apart from those associated with positioning the paper ready to cut. 1. Using power (usually electric motor) to operate the blade which cuts the paper stack. 2. Using power (an electric motor or manual turning of...