Control systems Definition and 94 Threads

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...

I'm having problem with task (a) in this problem The question My attempt The solution Why don't I get the same after I take the partial fraction using my calculator? And where does this R(s)=1/s^2 come from

I came up with this question while studying for an upcoming exam. I had a design problem, my solution gave me a gain of about 5500 with a PI compensator. Does having that high of a gain screw with my system? It gives me the desired results in MATLAB, but are there any drawbacks to doing that?

Hello folks, I am having hard time to decide which class to take in my senior year. I have two choices: Embedded Systems with primary focus on FPGA and VHDL and another class is Control Systems design. I like both of them, but the problem is that they are offered almost at the same time, so I...

Heyo, Finally taking my first senior level course in Mechanical Engineering - Dynamic Systems and Controls. I find it incredibly interesting and was hoping someone could suggest an easy to medium difficulty project I could do on my own. This is for my own edification. The book that my class...

Homework Statement Welding robot is defined by the block diagram attached/ excuse the paint work. (hope that worked) find: a)maximum value of K required to achieve stability. b)roots of the characteristic equation, at half the maximum K value. c)estimated percentage overshoot, if the...

Why should the input follow the exact output in control systems (Transfer function). What if my system is an amplifier ? shouldn't that means that the output is the input * gain ? I can't understand the differences between dealing with a real system ( such as an amplifier) of dealing with a...

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...

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...

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...

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...

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...

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)...

"engine and control systems" vs "powertrain" I am interested in working for a person in charge of "powertrains" on cars, and I have an interview for a co-op opportunity to work with someone in charge of aviation "engine and control systems" how much would these things overlap? i guess both...

Hi there, we recently completed a laboratory session on MATLAB relating to an RLC Circuit and arrive at a code and relevant inputs and got our graphs as shown below. I was just wondering if anyone know if these are correct and make any sense? Or any other comments appreciated. We also have...

Hey everyone, I am an undergraduate mechanical engineering major considering a EE feedback controls course as an upper division elective. I have taken ME Control Systems and am also the Lab Instructor for it this semester. I am familiar with signals, filters, sensors, controllers etc. My...

Homework Statement The system is given by: G(s) = 1/((s+0.1)(s+3)) I need to convert it to G(z), it's discrete form. The sample time T is 0.1 seconds. Homework Equations To convert it they give G(z) = (1-z^(-1))*Z-transform[G(s)/s] The Attempt at a Solution Obviously I...

Hi guys, Need a little help with an example my tutor and I are trying to work through. We're converting a dynamics system from a state space representation to a transfer function. This is where we are at so far... [s^2 + (C/Mb)S + (K1/Mb), -((C)S + K1)/Mb; -((C)S + K1)/Mw, S^2 +...

So I have a control systems mid-semester exam coming up and the lecturer has posted up a formula sheet for us. However it is different to past years exams and has a geometry section with the following equations: e^(±jθ)=cos(θ)±jsin(θ) cos(θ)=(e^jθ+e^-jθ)/2 sin(θ)=(e^jθ-e^-jθ)/2j Now I've...

Help! I'm a third-year chick in engineering, stuck on a block diagram reduction problem for my control systems engineering course. Please email me and I'll send you a screenshot of the problem! kati@sidwall.com Thanks a mill. K xo

Could anyone suggest me good books for mastering control systems?

Homework Statement A unity feedback system of the form: X(s)-------->Gc(s)---------->G(s)------------>Y(s) | | | | ----<------------1---------<---- has a plant: G(s) =...

Homework Statement Show that the geometric multiplicity (denoted by Qi) associated with an eigenvalue(lamda i) of an nxn matrix A can also be expressed as Qi=n-rank(A-(Idendity Matrix)*(lamda i)). P.S.:: Lamda i is simply a scaler quantity since it is an eigenvalue where A and...

I am a MaSc student in electrical engineering. In my undergraduate degree I focused on controls and now want to do a thesis on implementing controls other than PID in reactors. I am looking for a good source of information on controls systems in nuclear plants and the modelling and simulation of...

in control system, why have so many device like transistor? Wat is them function?

Here is a doozy In a magnetic levatation experiment a metallic object is help up in the air suspended under an electromagnet. The vertical displacement of the object can be described by the following nonlinear differential equation. m(d^2H/dt^2)=mg-k(I^2/H^2) m=mass of object g=gravity...

I am trying to find out what methods and tools are commonly-used for modeling and flow-balancing ECS on passenger aircraft… Any thoughts would be appreciated. Thanks!

Homework Statement Find analytical expressions for the magnitude and phase of the frequency response for each G(s) below: (a) G(s)\,=\,\frac{20}{s\,\left(s\,+\,5\right)\left(s\,+\,5\right)}(b) G(s)\,=\,\frac{2\,\left(s\,+\,5\right)}{\left(s\,+\,1\right)\,\left(s\,+\,10\right)}(c)...

Homework Statement http://img24.imageshack.us/img24/9028/72841137.jpg Homework Equations Routh-Hurwitz Stability Criterion The Attempt at a Solution For first question, you just write the Routh Array, make sure that the first row is all positive and you get Kmax = 1. Simple enough How...

ELEG -- DC Motor Control Systems Problem Homework Statement The voltage equation of a dc motor is written: ea(t)= Ra*ia(t) + La*[dia(t)/dt] + Kb*wm(t) where ea(t) is the applied voltage; ia(t) is the armature current; Ra is the armature resistance; La is the armature inductance; Kb is...

Homework Statement I have a transfer function in the laplace domain, and I have been asked to: "Develop Relationships in terms of the constant parameters and adjust K such that the constants are: A = 2, B = 1, C = 3, a = 3, b = 1" After finding this relationship, I am asked to convert it back...

Hello, first time poster (can't say I am a long time reader) and I've been looking for the answer to a question in regards to Aerospace Engineering. First a bit of background about my degree. I graduated with a bachelor's degree in Engineering Physics with a focus on electrical engineering. I...

Hello, Let me clarify my questions. Short version: When applying to graduate school, does the admission committee often look at which electives you have taken in your major? Do they dislike applicants who take electives that don't seem focus on one specific specialty in that major? Longer...

Hi I couldn't find any specific reading material for T and PI network based compensation in control systems. I was hoping someone could point me in the right direction. If you happen to know something about this, please do reply to this thread. Thanks in advance.

Hi For a control systems project this semester, my friends and I are working on a closed feedback image focusing system. Using a webcam, an image of a black and white checkerboard is acquired by a computer program. Then, the amount of defocus (blur) in the image is measured and quantified in...

Hi For our control systems project, we are trying to implement a closed feedback image focusing system. A digital camera captures the image of an object (a checkerboard), sends it to a computer algorithm which determines the amount of defocus in it and sends an actuation signal to a stepper...

Hi guys, i am taking a module on feedback control systems this semester and i was wondering if anyone has any good recommendations of textbooks. Thanks guys. Marcus.

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...

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:

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...

I am having a problem with plotting Bode plots in Matlab. We are required to plot a e^(-sT) (simple time shift) as a Bode plot. The "bode" function in Matlab requires either a TF, ZPK, SS, or FRD system as its first input. I cannot seem to find out how to plot the exponential. I can easily plot...

Hello there, I just got a question in control systems that i need help on... Hopefully, somebody genius on this forum can help me out.. If F(s) = 1 / (5s + 1) 1) Determine the DC gains of the open loop system and the closed loop system 2) Determine the time constant of the open loop...

hi, Can someone suggest some good books in Control Systems engg. which includes all from laplace to bode plots,nyquist etc etc. Thanx for any help.

Hi I am currently working my way through a control systems textbook and I am bringing my understanding of the relevant mathematics up to speed. I have happened across the Laplace Transform which I am happy enough with. I am concerned however that given the fact that this is a real project I may...