Simulink Definition and 90 Threads

  1. C

    How to Create a Step Load in Simulink for Frequency Observation?

    Hi Would anyone be able to give me some guidance on creating a step load in Simulink, I need this type of loading to observe frequency (slew rate) when a diesel engine with voltage control drives a asynchronous motor. I have most of the circuit built and am using Sim power systems mat lab v12...
  2. E

    Van der pol Equation Simulation in Simulink

    Homework Statement As the title says, I am trying to implement two differential equations into Simulink. I don't know how to start. How do I know what to start with, which block goes where? when do I add something and when do I know to subtract something using the sum block. When I got my...
  3. J

    How to measure the transfer function in Simulink?

    Let's say I simulate a simple filter in simulink and I want to see the transfer function graph (bode plot) of it. What do I do to get Vout/ Vin? I tried using the "PS Divide" Block and divide the output voltage and the input voltage, but that didn't work. Could anyone help me out here? This...
  4. J

    MATLAB Troubleshooting MATLAB Simulink Circuits for Sinusoidal Wave

    Hey guys. I am trying to simulate some circuits in MATLAB's Simulink, and I always get some weird graph which is not sinusoidal at all. I wanted to know if anyone could tell me which block am I missing if I want to get a good sinusoidal wave. Here are the pictures of the circuit and the...
  5. M

    Simulation of a GSHP system in Simulink

    Hello kind people of PF, I'm working on a project and attempting to simulate a ground source heat pump system in simulink. I have no experience what so ever with MATLAB or simulink, which isn't helping. Does anybody here have any experience of modelling such systems in this environment...
  6. M

    Probability analysis in Simulink model

    Here are the basics - I've got a model with a computed distance between 2 objects. The likelihood that object A will detect object B is a probability dependent on distance (and its a cumulative lognormal curve). I want to include a probability function based on that computed distance. So that...
  7. S

    How to display a real time graph in the Matlab GUI from simulink block

    I want to display a real time signal from ECG I use simulink block -scope and want it to be display in gui axes This is a code from some other guy function Command1_Callback(hObject, eventdata, handles) button_state = get(hObject,'Value'); if...
  8. E

    Implementing a function in simulink simulation

    Homework Statement The problem statement essentially has me inputing a signal into simulink manipulating it and then looking at the output. My output function is defined as $$y(n)=0.8x(n)+0.5x(n-1)+0.2x(n-2)$$ Homework Equations N/A The Attempt at a Solution In my simulink...
  9. N

    Circuits, State-Space Equations, MATLAB Simulink

    SOLVED. Just making the post showed me the answer. Sorry!
  10. Twinflower

    Problem creating a statespace in Simulink

    Homework Statement The problem describes a two tank system where liquid is put into tank 1 and is flowing through a pipe from the bottom of tank 1 into the bottom of tank 2 where it is pumped out from the other side of the tank. The liquid level of the tanks are described like this...
  11. Y

    Extended Kalman Filter(EKF) concept (SIMULINK)

    Hi all, I am currently designing a Extended Kalman Filter, estimating temperature in a permanent magnetic synchronize motor, in the Matlab Simulink. Attached pdf is the paper i am referring for my covariance matrix and state vector matrices. I have built the system in Simulink but the...
  12. S

    MATLAB MATLAB Simulink: Incomplete plot in scope

    Often, after running a model in Simulink, the graph displayed in Scope is incomplete.. ie the initial portion of the graph is missing and only a part of the final portion remains. If I open the scope window as soon as the model starts running then I can see the graph being plotted but after a...
  13. I_am_learning

    MATLAB Matlab Simulink Simulation very slow

    I tried to solve a simple transmision line circuit using MATLAB simpower system In this image, Ac source is 132 kv. I want to read rms value at the load. But unfortunately, the simulation is running very slow, and it is taking forever to even comple the one ac cycle. Any help please.
  14. T

    Where to start? Modeling a UAV Control System in Simulink

    Hi, I have a small project coming up, based around modeling (and perhaps building) a small Micro UAV system. Its a small device with contra-rotating blades (for stability), and I want to perhaps model the control system using simulink but I really don't know where to start! The aim is for the...
  15. B

    Simulating a custom discrete-time PI controller and plant in SIMULINK

    Hi! I've been looking to simulate a PI controller in SIMULINK without much success. You will be able to find a description of the above in the images located here: https://picasaweb.google.com/102197309611185157885/PIControlWithMatlabAndSIMULINK?authkey=Gv1sRgCOCnzvbm5PuNJA&feat=directlink. I...
  16. 1

    How to Implement Dynamic Max/Min Control in a Simulink 2 D.O.F System?

    I am modelling the vibration of a 2 D.O.F system with damping in Simulink. I want to set up control such that if the control value is between two values (max and min) then it sets the control value to the specified input but if it is outside the max and min interval then the control value is...
  17. 1

    How Can I Implement Dynamic Max/Min Control in Simulink for a 2 D.O.F System?

    I am modelling the vibration of a 2 D.O.F system with damping in Simulink. I want to set up control such that if the control value is between two values (max and min) then it sets the control value to the specified input but if it is outside the max and min interval then the control value is...
  18. V

    Creating 4x4 Matrix Block in Simulink

    Hello everyone, I need to create 4x4 matrix in simulink. Not like writing in "Constant" block, i mean 4x4 form of the "Create 3x3 Matrix". I look everywhere but i couldn't see that block, so i thought; "am i searching wrong thing?", only you can tell me that:smile: For example; what...
  19. J

    Fortran Data analysis with fortran/c or simulink

    Hello, Lately i had my XPS measurements from my collegue. data files are .txt files and contains two column and thousends of rows of consequent measurements of same region. i mean 81.510 aa.bbb ... ... 91.870 cc.ddd 81.510 ee.fff ... ... 91.870 gg.hhh the reason of...
  20. E

    Hartley Receiver and MATLAB Simulink

    Homework Statement I am totally new to MATLAB. My lecturer wasn't aware of that and just gave us an assignment about explaining the phenomena Hartley Receiver using Simulink.Homework Equations The diagram is attached as first picture. Using Simulink, prove that the image signal is alleviated at...
  21. J

    Simulink model of Active Suspension

    Hi, I've created the model for an active suspension, however my suspension working space, body accel and tyre load graphs, I'm not sure if they're correct. If anyone could look at the model and tell me if I have gone wrong, I'd be grateful. Thanks. http://cl.ly/251C3e0y3d0Y1z1j0K1W...
  22. L

    Simulating a Ring Oscillator in Simulink - Help Needed!

    i am a last year EE student and I am creating a library in simulink. and at 1 stage i need to simulate a ring oscillator . i ve done it but with a lil bit of problems in the simulations. I am using spice parameters for simulink . that's why i asked if any of you guys have done it before. how do...
  23. M

    MATLAB How to Connect Display Block to Error Calculator Block in MATLAB Simulink?

    need help in MATLAB simulink ? when i try to connect display block with error calculator block then this red line appears instead of black...it shows that no connection between them...can u please tell me how to conect them ... thanks ...see the attachment please...
  24. S

    Frequency Plot(or bode plot) in SIMULINK

    Dear all, Can anyone describe as to how we can plot frequency response in SIMULINK-MATLAB. One way is to use spectrum analyzer but it does not give accurate results for continuous time systems...another way could off course be to use commands but I need something which can compute bode plots...
  25. H

    Hybrid Powertrain design in simulink

    i am a msc automotive student looking for simulink tutorials related to the hybrid electric powertrains.
  26. M

    Help Needed! Simulating PID Controller in Simulink - Mark's Project

    Hello I'm a student working on a project in temperature control. I have to investigate some of the properties of a standard PID controller. Sadly my project supervisor is not very helpful and I was hoping somebody here could offer me a litte guidance. I would like to simulate my controller in...
  27. S

    Pid controller for position control in amb simulink help

    hi ! basically i need help in simulink plotting the output can anyone help i have attached the output desireed for my model in pic below below pleasez help me out guys thnx in advance
  28. R

    MATLAB Matlab Simulink Tutorial: Design Optic System with IR Light Source

    Hello, I'm trying to model a optic sytem, includes a IR light source, FTIR spectrometer, and lock-in amplifier. I wonder if anyone has knowledge about any tutorials for designing such a system. Thanks
  29. A

    Simulink Modeling for F1 Car Start from Standstill

    Hi guys, Im a newbie to this site... I have been wrking on a simulink model of a F1 car for a few days.I wanted to simulate the start of a F1 car from standstill.. I used the following basic concepts: 1) The engine is revved at say around 11000 .rpm 2)So when the lights go off, I engage the...
  30. J

    MATLAB Analyzing Graphs with Simulink and Laplace Transforms

    the question goes like this: the first part asks to utilize simulink to obtain the graph pattern: the second part requires us to make use of laplace transform and inverse laplace transform to solve the initial value problem: the third part asks us to compare both the results...
  31. D

    Simulink Help for BPSK Receiver Model - Step-by-Step Guide and Tips"

    Hay to all this is my first post here :) First of all thanks on all who try to help me :) Second of all i got this "task" to make a model of this picture: http://img200.imageshack.us/i/slikanapravitimodel.jpg/ http://img200.imageshack.us/img200/493/slikanapravitimodel.th.jpg...
  32. S

    Simulink: Understanding Time Steps and Sampling Frequencies

    Hi, I have a project due that has to be done in Simulink. I am somewhat familiar with Simulink, but some things don't make sense to me. First off, What determines the time step between each iteration? eg. when you have a clock in the model, what determines the change in time from one...
  33. G

    Connecting Simulink to USB and COM Ports: A Beginner's Guide

    Hello, I'm new to working with MATLAB and simulink, but I'm trying to connect a USB device with Simulink. Is there any way to connect Simulink with either a USB-port or a COM-port? Thanks in advance!
  34. D

    Simulink Help (i would imagine its a pretty simple solution)

    I have a system, setup to simulate the braking of a vehicle. the vehicle decelerates from 400 mph to zero using a parachute, and conventional brakes the parachute deploys at 400mph to prevent the brakes from overheating they need to be used at a lower velocity at present i have a...
  35. K

    Boost Converter Simulink Model Requests: Need Help With PWM Control

    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..
  36. P

    Thermistor + Simulink: Temperature Control in xPC Target Toolbox

    Hi Everybody, I'm doing a small project for my studies, I'm developing the xPC Target toolbox of Matlab. well the point is that i need to do a temperature control, I'm using a thermistor as temperature sensor and i need to insert a block into simulink of the thermistor to start to make the...
  37. S

    Simulink Help: Troubleshooting Errors with Transfer Function Block

    Hi Everyone..I am the new member of the group... I have a doubt regarding simulink..In the transfer function block I have the numerator as 1 and coming to denominator I have [I 1.5] where I is varying with time and I have written code for I (as M file) but when I am running the project I am...
  38. T

    MATLAB Vehilce simulation, matlab simulink

    hi there, i am currently developing a vehilce simulation model using MATLAB simulink. The simulation requires a vehilce to be simulated traveling around a simple race track. the vehilce model itslef has already been created and have all necessary vehicle input data for the simulation. the...
  39. P

    The integration block in simulink

    Hi every body, I am not sure if this question is suitable in this box, so I will have a try. I just started to study Matlab and Simulink. There's one thing i do not understand: Why does the integration block in simulink have the symbol 1/s. Does it have something linked with laplace...
  40. marlon

    SIMULINK Help: Forces Acting on a Body

    Hello everyone... I have a little question on simulink. When forces acting on a certain body are given (just like a spring-damped system for example) can we automatically implement such a model in simulink by only using the equations of motion (mä = sum of given forces) or do I always need...
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