Control Definition and 965 Threads

Hi, I,m Novice on VFDs and I was called to reconnect control circuits and program one of them for a duplex control panel(water booster system). I figured out the I/O terminals on the new drive but don't know it functions. Where I can get those function from since the only source is the old...

Homework Statement I'm having a slight problem with the question below. A temperature control process has a first-order response with a step response time of 12 seconds. In selecting a temperature sensor for the control system for the process, for what maximum value of sensor time-constant...

Hello. Since the Higgs Boson is responsible for giving sub-atomic particles mass..or any particles there mass..is there a present understanding of the mechanism by which the field actually does this? And if there is...is there any artificial way of controlling it? My thinking is that if you...

Homework Statement Write function for control system block Homework Equations The Attempt at a Solution 4 and D are parallel so we add them : I am stucking in the simplication of this block Should I group these elements to a function called w[nT], so...

Hello all, Can somebody explain to me what PEC (proximity effect control) means in nanofabrication? Thanks :)

Hello, I have recently been doing a lot of research around designing quadcopters/hexcopters and so forth. I have come to the conclusion that it may be fun to learn bait of control theory on the side and it sounds useful for later on when I go to university. Do you know what the prerequisite are...

Can anyone tell me if Control bandwidth and closed loop bandwidth means the same thing? If not what does control bandwidth mean? Please & Thank you!

Hello, I am trying to develop a software control algorithm to compensate for oscillator imperfections/frequency drift. I have a NTP server which I can get a pretty good estimation (@1Hz) of the "true" time and compare it to my system's time. I can differentiate the offset-error to calculate...

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...

I want to design a multiphase clock generator circuit and control logic. The circuit will have a 250 MHz clock and the circuit will generate three non-overlapping clock phrases running at 50 MHz. Each clock phase has an associated output driver that can drive up to a 10pF load with no more than...

Homework Statement I know how to apply the linear momentum equation for the control volume, but I am not sure why the V2 (velocity of flow from section 2) is V*cos(60). The only reason I can see is the velocity being constant. And since there are two outlet with equal area, the velocity is...

What frequency are they referring to when they plot magnitude versus frequency in a bode plot of a control system? I don't understand where frequency comes from in control systems. I've researched this and I'm still very confused by what is meant by frequency.

Friends,i was asked once the relationship between reactive power and voltage.ques is"if i am providing reactive power at some particular bus,voltage at that bus is going to improve".why??i answered that if u will provide reactive power remotely to that bus by some shunt compensation device then...

Homework Statement Determine the system type for $$ G(s) = \frac{K}{(s + 1)(10s + 1)(20s + 1)} $$Homework Equations I am using a step, ramp, and parabolic inputs. That is, \begin{align} R(s) &= \frac{R}{s}\\ R(s) &= \frac{R}{s^2}\\ R(s) &= \frac{R}{s^3} \end{align} The Attempt at a Solution...

How many steps of Bank D rod motion will be required to change power level from 5% to 18%? Assume that the full power Delta T from primary to secondary is 50 degrees F. Assume the moderator temperature coefficient is -5 pcm/degree F. Assume the Bank D rod worth is 5 pcm/step. Neglect fuel...

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...

"Digital" Control Systems I recently took a control theory class at my local university and we learned about PID, loopshaping, and state-space methods and implemented them in MATLAB/Simulink and used an Arduino for some projects. However, I was talking with some EEs (I'm an ME) and they were...

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

Traction-slip control: braking a low mu-wheel to "support" driving tor I've been doing some studying on traction-slip control(ASC). I've also been trying to draw comparisons between ASC with differential locking mechanisms on a μ-split situation. I don't quite understand how braking the μ-low...

What is it controlling and What devices are in the loop

Hello, Suppose I have the following step response: ystep(t)=(kP/1+kP)(1-e(-t/τ)) where k is constant and P is the plant. How may I determine the values of k for which there would be no overshoot?

I am trying to understand the process of a digital pid controller that operates with/in a Windows operating system. By process I mean the sequence of steps a computer software system takes to adjust the output of the system whether the process be cruise control, temperature, pressure etc. So I'm...

Yesterday afternoon I noticed a dog running up and down our street, occasionally wandering through and around neighbor's yards. I'd never seen this dog being walked in the neighborhood before, so I went outside and got it to come into our back yard. I immediately noticed it didn't have a collar...

Homework Statement Homework Equations See below The Attempt at a Solution Root Locus? Easy Peasy right? Based on provided equation G(s), i solved the coordinates of the root locus diagram using quadratic equation. For the 2nd part of the question, i have to find gain at which rise time...

Homework Statement Given G(s) = 1/[(s^2+s+4)(s+6)] and C(s) = k, find the limit of stability of k. Also, what is the range of k such that the settling time is between 10 and 20 seconds. Homework Equations Provided above The Attempt at a Solution I have attempted to set this...

Hi all, Q: How do you find out the boundary work using control volume analysis for a tire that is punctured all of a sudden? To proceed, I started off by using the tire as a control volume with one outlet. Using first Law, E(in) - E(out) = dE/dt Final Conditions: P(final) =...

Homework Statement Given a electrical circuit as one below One can find the transfer function For second order systems this can be written as I know that the damping coefficient can be found using the following formula In the over damped case ζ>1 can easily occur depending on the...

Hey there. I have an open loop transfer function TF = K/(t*s^2 + s) where K is known. Given a value for the break frequency (say, w_b = 10 rad/s), I have to determine the value of the time constant, t. I understand how do this with a bode plot, but not entirely sure how to proceed...

I'm specifically interested in television remote controls, garage door opener remote controls, and car door remote controls. I know that the remote control must send a signal somehow to the television, garage door, or car door respectively. But what type of signal does each type of remote...

I'm studying CE and math. My computer engineering course is basically electronic/electrical engineering with extra software. I have a choice between the two subject combinations below. Additionally, 1. I'm studying two mechatronic control theory subject, and a mathematical control theory...

hi i'm using Matlab/simulink to create a microgrid model which simulate dynamic control of power based on the loads. the loads are changing based on the realtime. I use several voltage sources to power the loads. I would like to be able to turn on/off the generator based on the loads. for...

I am doing a project in controlling the vibration in 4 wheeler exhaust system by using dampers. But i am not sure of what kind of dampers to use. Also is it possible to add multiple dampers and one just near the exhaust manifold.

Hi, I seem to be having some issues going from state space representation of a system to signal flow graph representation. My troubles seem to be, if I have something like this \frac{d}{dt}x_{1}(t) = v_{1}(t) In state space representation I list functions to which the derivatives are as...

Homework Statement Do you have any idea where i can find (basic) examples of how to derive the cost function when controlling a system with MPC? Thats it, i feel lost Homework Equations MPC The Attempt at a Solution Books and google

Homework Statement I'm trying to find \frac{V_{Load}(s)}{I_{Dist}(s)} using Mason's rule. I was able to solve for \frac{V_{Load}}{I_{Cf}(S)} using Mason's rule but am not sure how to solve for \frac{V_{Load}(s)}{I_{Dist}(s)}. http://imageshack.com/a/img31/4299/zr5.PNG Homework...

Hello everyone, I'm new to this forum. I'm only 19 years old but I want to major in Electrical & Electronics engineering. So besides some practical skill I've learned from working with my dad I have a lot to learn especially in terms of theory. During my experience I've heard a few companies...

Homework Statement Find the transfer function, G(s) = \frac{V_{0}(s)}{V_{i}(s)} for each network shown in figure P2.3. [Section 2.4] http://imagizer.imageshack.us/v2/800x600q90/20/1ocq.png Homework Equations The Attempt at a Solution When I try and solve this problem I...

I have a Geared DC Motor rated 12V, 0.6A, 180RPM, 3kg.cm, 66% Efficiency. I measured the impedance of the disconnected motor at 45 Ohm. I want to use it with a with a simple 12V 1A DC Power Supply in a Field Current Control Circuit to be able to dial in variable speeds. Will the circuit in...

Why is it that forces (for changes in pressure across a fluid) on the control volume are generally considered compressive? Even in the derivation of the Navier-Stokes equation, it is assumed that forces from fluid pressure will be compressive? Why?

Hi guys, currently i am stuck with the limit switches in the sequential control circuit. the Normally open,heldclosed, Normally closed,held open , normally closed and normnally open. Let's say if bo is NO,HC. so the switch will be normally open then once bo is actuated then the switch will...

How do control rods get in there!? This is a bit annoying for me, hopefully someone can help. You have fuel pellets in rods. They are en capsuled by cladding to make sure fission fragments cannot escape into the moderator. Do the fission neutrons pass through this cladding into the open...

Homework Statement Attached below. Homework Equations How can I know I got the correct set of parameter in step 5. I did everything using MATLAB but couldn't figure out how to get the right value of the zero. The Attempt at a Solution Attached below.

A "DIY" Electronic Speed Control ? is that viable? The concept of 3-stage brushless motors does seem very simple to me. Simply power the 3 different stages at different times, use 2 at the same time and the 3rd as a magnetic sensor. When the sensor goes on you flip the stages, one goes off and...

I am a math grad student who has really got interested in spacecraft control and navigation. Like a lot of people, I have been playing too much ksp and gotten interested in the mathematics of spacecraft navigation and control. For fun, I derived some basic motion and control equations...

Can anyone recommend a company that provide advanced control systems for marine and civil engineering in the Cambridgeshire area? Thank you

This is a revision question rather than homework as I have the answer and working. I have attached the block diagram and first part of the answer which explains how to derive the transfer function from first principles. I understand the principles behind this and how the RHS of the equation...

The radical Smolin thread left me wondering if other similar ideas could not be applied to other areas of Cosmology and even Particle Physics. Every complex system I can think of in our lives, and in nature, forms part of a complex multifaceted control system or process, with various feedback...

Hello, I was reading somewhere about how to control Rudders in RC planes. The basic equation here is the drag equation: F=0.5*ρ*v^2*C*A (take ρ=1Kg/m3) where v is the velocity, C is the Drag coefficient of the control surface (Rudder in this case) and A is the area. I am wondering if we have...

Hello. I have to do an experiment on this topic, but there are many things I don't know. First of all, can you tell me what do the symbols V~ and A~ mean?

Been reading some Dover books (topology, ODE:s, complex variables) and I think they've been just brilliant so far. I'd like more books in the same vein on other subjects. Most engineering books are absolutely awful in my opinion (books in the style of Merriam/Kraige mechanics - utterly...